diff --git a/.travis.yml b/.travis.yml
index 6799e1f5..a0bbef87 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,7 +44,7 @@ install:
 - |
   travis_wait travis_retry $PIP uninstall numpy -y
   travis_wait travis_retry $PIP install -r requirements.txt --ignore-installed flake8 isort cpplint faiss annoy
-  if  [ "${PYTHON:0:1}" = "3" ]; then
+  if  [ "${PYTHON:0:1}" = "3" ] && [[ "$TRAVIS_OS_NAME" != "osx" ]]; then
      travis_wait travis_retry $PIP install nmslib
   fi
   travis_retry $PIP install -e .
diff --git a/implicit/als.py b/implicit/als.py
index d864967f..98eaf824 100644
--- a/implicit/als.py
+++ b/implicit/als.py
@@ -12,7 +12,7 @@
 import implicit.cuda
 
 from . import _als
-from .recommender_base import MatrixFactorizationBase
+from .matrix_factorization_base import MatrixFactorizationBase
 from .utils import check_blas_config, nonzeros
 
 log = logging.getLogger("implicit")
diff --git a/implicit/bpr.cpp b/implicit/bpr.cpp
index 7103b09c..8e6e462b 100644
--- a/implicit/bpr.cpp
+++ b/implicit/bpr.cpp
@@ -2345,7 +2345,6 @@ static const char __pyx_k_multiprocessing[] = "multiprocessing";
 static const char __pyx_k_pyx_PickleError[] = "__pyx_PickleError";
 static const char __pyx_k_setstate_cython[] = "__setstate_cython__";
 static const char __pyx_k_implicit_bpr_pyx[] = "implicit/bpr.pyx";
-static const char __pyx_k_recommender_base[] = "recommender_base";
 static const char __pyx_k_pyx_unpickle_Enum[] = "__pyx_unpickle_Enum";
 static const char __pyx_k_cline_in_traceback[] = "cline_in_traceback";
 static const char __pyx_k_has_sorted_indices[] = "has_sorted_indices";
@@ -2359,6 +2358,7 @@ static const char __pyx_k_contiguous_and_indirect[] = "<contiguous and indirect>
 static const char __pyx_k_verify_negative_samples[] = "verify_negative_samples";
 static const char __pyx_k_Cannot_index_with_type_s[] = "Cannot index with type '%s'";
 static const char __pyx_k_Invalid_shape_in_axis_d_d[] = "Invalid shape in axis %d: %d.";
+static const char __pyx_k_matrix_factorization_base[] = "matrix_factorization_base";
 static const char __pyx_k_BayesianPersonalizedRanking[] = "BayesianPersonalizedRanking";
 static const char __pyx_k_No_matching_signature_found[] = "No matching signature found";
 static const char __pyx_k_itemsize_0_for_cython_array[] = "itemsize <= 0 for cython.array";
@@ -2518,6 +2518,7 @@ static PyObject *__pyx_n_s_long;
 static PyObject *__pyx_kp_s_long_double;
 static PyObject *__pyx_kp_s_long_float;
 static PyObject *__pyx_n_s_main;
+static PyObject *__pyx_n_s_matrix_factorization_base;
 static PyObject *__pyx_n_s_memview;
 static PyObject *__pyx_n_s_metaclass;
 static PyObject *__pyx_n_s_minlength;
@@ -2551,7 +2552,6 @@ static PyObject *__pyx_n_s_rand;
 static PyObject *__pyx_n_s_randint;
 static PyObject *__pyx_n_s_random;
 static PyObject *__pyx_n_s_range;
-static PyObject *__pyx_n_s_recommender_base;
 static PyObject *__pyx_n_s_reduce;
 static PyObject *__pyx_n_s_reduce_cython;
 static PyObject *__pyx_n_s_reduce_ex;
@@ -24995,6 +24995,7 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_kp_s_long_double, __pyx_k_long_double, sizeof(__pyx_k_long_double), 0, 0, 1, 0},
   {&__pyx_kp_s_long_float, __pyx_k_long_float, sizeof(__pyx_k_long_float), 0, 0, 1, 0},
   {&__pyx_n_s_main, __pyx_k_main, sizeof(__pyx_k_main), 0, 0, 1, 1},
+  {&__pyx_n_s_matrix_factorization_base, __pyx_k_matrix_factorization_base, sizeof(__pyx_k_matrix_factorization_base), 0, 0, 1, 1},
   {&__pyx_n_s_memview, __pyx_k_memview, sizeof(__pyx_k_memview), 0, 0, 1, 1},
   {&__pyx_n_s_metaclass, __pyx_k_metaclass, sizeof(__pyx_k_metaclass), 0, 0, 1, 1},
   {&__pyx_n_s_minlength, __pyx_k_minlength, sizeof(__pyx_k_minlength), 0, 0, 1, 1},
@@ -25028,7 +25029,6 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s_randint, __pyx_k_randint, sizeof(__pyx_k_randint), 0, 0, 1, 1},
   {&__pyx_n_s_random, __pyx_k_random, sizeof(__pyx_k_random), 0, 0, 1, 1},
   {&__pyx_n_s_range, __pyx_k_range, sizeof(__pyx_k_range), 0, 0, 1, 1},
-  {&__pyx_n_s_recommender_base, __pyx_k_recommender_base, sizeof(__pyx_k_recommender_base), 0, 0, 1, 1},
   {&__pyx_n_s_reduce, __pyx_k_reduce, sizeof(__pyx_k_reduce), 0, 0, 1, 1},
   {&__pyx_n_s_reduce_cython, __pyx_k_reduce_cython, sizeof(__pyx_k_reduce_cython), 0, 0, 1, 1},
   {&__pyx_n_s_reduce_ex, __pyx_k_reduce_ex, sizeof(__pyx_k_reduce_ex), 0, 0, 1, 1},
@@ -25960,7 +25960,7 @@ if (!__Pyx_RefNanny) {
  * 
  * import implicit.cuda             # <<<<<<<<<<<<<<
  * 
- * from .recommender_base import MatrixFactorizationBase
+ * from .matrix_factorization_base import MatrixFactorizationBase
  */
   __pyx_t_2 = __Pyx_Import(__pyx_n_s_implicit_cuda, 0, -1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 18, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
@@ -25970,7 +25970,7 @@ if (!__Pyx_RefNanny) {
   /* "implicit/bpr.pyx":20
  * import implicit.cuda
  * 
- * from .recommender_base import MatrixFactorizationBase             # <<<<<<<<<<<<<<
+ * from .matrix_factorization_base import MatrixFactorizationBase             # <<<<<<<<<<<<<<
  * 
  * 
  */
@@ -25979,7 +25979,7 @@ if (!__Pyx_RefNanny) {
   __Pyx_INCREF(__pyx_n_s_MatrixFactorizationBase);
   __Pyx_GIVEREF(__pyx_n_s_MatrixFactorizationBase);
   PyList_SET_ITEM(__pyx_t_2, 0, __pyx_n_s_MatrixFactorizationBase);
-  __pyx_t_1 = __Pyx_Import(__pyx_n_s_recommender_base, __pyx_t_2, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 20, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_Import(__pyx_n_s_matrix_factorization_base, __pyx_t_2, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 20, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
   __pyx_t_2 = __Pyx_ImportFrom(__pyx_t_1, __pyx_n_s_MatrixFactorizationBase); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 20, __pyx_L1_error)
diff --git a/implicit/bpr.pyx b/implicit/bpr.pyx
index b731c911..a45c0713 100644
--- a/implicit/bpr.pyx
+++ b/implicit/bpr.pyx
@@ -17,7 +17,7 @@ import scipy.sparse
 
 import implicit.cuda
 
-from .recommender_base import MatrixFactorizationBase
+from .matrix_factorization_base import MatrixFactorizationBase
 
 
 cdef extern from "<random>" namespace "std":
diff --git a/implicit/lmf.cpp b/implicit/lmf.cpp
index a7465f34..4c17584f 100644
--- a/implicit/lmf.cpp
+++ b/implicit/lmf.cpp
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.29 */
+/* Generated by Cython 0.29.13 */
 
 /* BEGIN: Cython Metadata
 {
@@ -13,6 +13,7 @@
             "-std=c++11"
         ],
         "extra_link_args": [
+            "-Wl,-rpath,/usr/local/opt/gcc/lib/gcc/8/",
             "-fopenmp",
             "-std=c++11"
         ],
@@ -33,8 +34,8 @@ END: Cython Metadata */
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_29"
-#define CYTHON_HEX_VERSION 0x001D00F0
+#define CYTHON_ABI "0_29_13"
+#define CYTHON_HEX_VERSION 0x001D0DF0
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -223,6 +224,9 @@ END: Cython Metadata */
   #undef SHIFT
   #undef BASE
   #undef MASK
+  #ifdef SIZEOF_VOID_P
+    enum { __pyx_check_sizeof_voidp = 1 / (int)(SIZEOF_VOID_P == sizeof(void*)) };
+  #endif
 #endif
 #ifndef __has_attribute
   #define __has_attribute(x) 0
@@ -347,8 +351,13 @@ class __Pyx_FakeReference {
   #define __Pyx_DefaultClassType PyClass_Type
 #else
   #define __Pyx_BUILTIN_MODULE_NAME "builtins"
+#if PY_VERSION_HEX >= 0x030800A4 && PY_VERSION_HEX < 0x030800B2
+  #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
+          PyCode_New(a, 0, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
+#else
   #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
           PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
+#endif
   #define __Pyx_DefaultClassType PyType_Type
 #endif
 #ifndef Py_TPFLAGS_CHECKTYPES
@@ -383,26 +392,6 @@ class __Pyx_FakeReference {
 #else
 #define __Pyx_PyFastCFunction_Check(func) 0
 #endif
-#if CYTHON_USE_DICT_VERSIONS
-#define __PYX_GET_DICT_VERSION(dict)  (((PyDictObject*)(dict))->ma_version_tag)
-#define __PYX_UPDATE_DICT_CACHE(dict, value, cache_var, version_var)\
-    (version_var) = __PYX_GET_DICT_VERSION(dict);\
-    (cache_var) = (value);
-#define __PYX_PY_DICT_LOOKUP_IF_MODIFIED(VAR, DICT, LOOKUP) {\
-        static PY_UINT64_T __pyx_dict_version = 0;\
-        static PyObject *__pyx_dict_cached_value = NULL;\
-        if (likely(__PYX_GET_DICT_VERSION(DICT) == __pyx_dict_version)) {\
-            (VAR) = __pyx_dict_cached_value;\
-        } else {\
-            (VAR) = __pyx_dict_cached_value = (LOOKUP);\
-            __pyx_dict_version = __PYX_GET_DICT_VERSION(DICT);\
-        }\
-    }
-#else
-#define __PYX_GET_DICT_VERSION(dict)  (0)
-#define __PYX_UPDATE_DICT_CACHE(dict, value, cache_var, version_var)
-#define __PYX_PY_DICT_LOOKUP_IF_MODIFIED(VAR, DICT, LOOKUP)  (VAR) = (LOOKUP);
-#endif
 #if CYTHON_COMPILING_IN_PYPY && !defined(PyObject_Malloc)
   #define PyObject_Malloc(s)   PyMem_Malloc(s)
   #define PyObject_Free(p)     PyMem_Free(p)
@@ -435,7 +424,7 @@ class __Pyx_FakeReference {
 typedef int Py_tss_t;
 static CYTHON_INLINE int PyThread_tss_create(Py_tss_t *key) {
   *key = PyThread_create_key();
-  return 0; // PyThread_create_key reports success always
+  return 0;
 }
 static CYTHON_INLINE Py_tss_t * PyThread_tss_alloc(void) {
   Py_tss_t *key = (Py_tss_t *)PyObject_Malloc(sizeof(Py_tss_t));
@@ -458,7 +447,7 @@ static CYTHON_INLINE int PyThread_tss_set(Py_tss_t *key, void *value) {
 static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
   return PyThread_get_key_value(*key);
 }
-#endif // TSS (Thread Specific Storage) API
+#endif
 #if CYTHON_COMPILING_IN_CPYTHON || defined(_PyDict_NewPresized)
 #define __Pyx_PyDict_NewPresized(n)  ((n <= 8) ? PyDict_New() : _PyDict_NewPresized(n))
 #else
@@ -670,7 +659,8 @@ typedef struct {PyObject **p; const char *s; const Py_ssize_t n; const char* enc
                 const char is_unicode; const char is_str; const char intern; } __Pyx_StringTabEntry;
 
 #define __PYX_DEFAULT_STRING_ENCODING_IS_ASCII 0
-#define __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT 0
+#define __PYX_DEFAULT_STRING_ENCODING_IS_UTF8 0
+#define __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT (PY_MAJOR_VERSION >= 3 && __PYX_DEFAULT_STRING_ENCODING_IS_UTF8)
 #define __PYX_DEFAULT_STRING_ENCODING ""
 #define __Pyx_PyObject_FromString __Pyx_PyBytes_FromString
 #define __Pyx_PyObject_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
@@ -1004,7 +994,7 @@ struct __pyx_obj_8implicit_3lmf_RNGVector {
 };
 
 
-/* "View.MemoryView":104
+/* "View.MemoryView":105
  * 
  * @cname("__pyx_array")
  * cdef class array:             # <<<<<<<<<<<<<<
@@ -1029,7 +1019,7 @@ struct __pyx_array_obj {
 };
 
 
-/* "View.MemoryView":278
+/* "View.MemoryView":279
  * 
  * @cname('__pyx_MemviewEnum')
  * cdef class Enum(object):             # <<<<<<<<<<<<<<
@@ -1042,7 +1032,7 @@ struct __pyx_MemviewEnum_obj {
 };
 
 
-/* "View.MemoryView":329
+/* "View.MemoryView":330
  * 
  * @cname('__pyx_memoryview')
  * cdef class memoryview(object):             # <<<<<<<<<<<<<<
@@ -1065,7 +1055,7 @@ struct __pyx_memoryview_obj {
 };
 
 
-/* "View.MemoryView":960
+/* "View.MemoryView":965
  * 
  * @cname('__pyx_memoryviewslice')
  * cdef class _memoryviewslice(memoryview):             # <<<<<<<<<<<<<<
@@ -1097,7 +1087,7 @@ static struct __pyx_vtabstruct_8implicit_3lmf_RNGVector *__pyx_vtabptr_8implicit
 static CYTHON_INLINE long __pyx_f_8implicit_3lmf_9RNGVector_generate(struct __pyx_obj_8implicit_3lmf_RNGVector *, int);
 
 
-/* "View.MemoryView":104
+/* "View.MemoryView":105
  * 
  * @cname("__pyx_array")
  * cdef class array:             # <<<<<<<<<<<<<<
@@ -1111,7 +1101,7 @@ struct __pyx_vtabstruct_array {
 static struct __pyx_vtabstruct_array *__pyx_vtabptr_array;
 
 
-/* "View.MemoryView":329
+/* "View.MemoryView":330
  * 
  * @cname('__pyx_memoryview')
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@@ -1131,7 +1121,7 @@ struct __pyx_vtabstruct_memoryview {
 static struct __pyx_vtabstruct_memoryview *__pyx_vtabptr_memoryview;
 
 
-/* "View.MemoryView":960
+/* "View.MemoryView":965
  * 
  * @cname('__pyx_memoryviewslice')
  * cdef class _memoryviewslice(memoryview):             # <<<<<<<<<<<<<<
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     PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args,\
     const char* function_name);
 
+/* PyDictVersioning.proto */
+#if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_TYPE_SLOTS
+#define __PYX_DICT_VERSION_INIT  ((PY_UINT64_T) -1)
+#define __PYX_GET_DICT_VERSION(dict)  (((PyDictObject*)(dict))->ma_version_tag)
+#define __PYX_UPDATE_DICT_CACHE(dict, value, cache_var, version_var)\
+    (version_var) = __PYX_GET_DICT_VERSION(dict);\
+    (cache_var) = (value);
+#define __PYX_PY_DICT_LOOKUP_IF_MODIFIED(VAR, DICT, LOOKUP) {\
+    static PY_UINT64_T __pyx_dict_version = 0;\
+    static PyObject *__pyx_dict_cached_value = NULL;\
+    if (likely(__PYX_GET_DICT_VERSION(DICT) == __pyx_dict_version)) {\
+        (VAR) = __pyx_dict_cached_value;\
+    } else {\
+        (VAR) = __pyx_dict_cached_value = (LOOKUP);\
+        __pyx_dict_version = __PYX_GET_DICT_VERSION(DICT);\
+    }\
+}
+static CYTHON_INLINE PY_UINT64_T __Pyx_get_tp_dict_version(PyObject *obj);
+static CYTHON_INLINE PY_UINT64_T __Pyx_get_object_dict_version(PyObject *obj);
+static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UINT64_T tp_dict_version, PY_UINT64_T obj_dict_version);
+#else
+#define __PYX_GET_DICT_VERSION(dict)  (0)
+#define __PYX_UPDATE_DICT_CACHE(dict, value, cache_var, version_var)
+#define __PYX_PY_DICT_LOOKUP_IF_MODIFIED(VAR, DICT, LOOKUP)  (VAR) = (LOOKUP);
+#endif
+
 /* GetModuleGlobalName.proto */
 #if CYTHON_USE_DICT_VERSIONS
 #define __Pyx_GetModuleGlobalName(var, name)  {\
@@ -1263,7 +1279,7 @@ static CYTHON_INLINE PyObject *__Pyx_PyCFunction_FastCall(PyObject *func, PyObje
 #define __Pyx_PyFunction_FastCall(func, args, nargs)\
     __Pyx_PyFunction_FastCallDict((func), (args), (nargs), NULL)
 #if 1 || PY_VERSION_HEX < 0x030600B1
-static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, int nargs, PyObject *kwargs);
+static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, Py_ssize_t nargs, PyObject *kwargs);
 #else
 #define __Pyx_PyFunction_FastCallDict(func, args, nargs, kwargs) _PyFunction_FastCallDict(func, args, nargs, kwargs)
 #endif
@@ -1276,7 +1292,7 @@ static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args,
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   #define __Pxy_PyFrame_Initialize_Offsets()\
     ((void)__Pyx_BUILD_ASSERT_EXPR(sizeof(PyFrameObject) == offsetof(PyFrameObject, f_localsplus) + Py_MEMBER_SIZE(PyFrameObject, f_localsplus)),\
-     (void)(__pyx_pyframe_localsplus_offset = PyFrame_Type.tp_basicsize - Py_MEMBER_SIZE(PyFrameObject, f_localsplus)))
+     (void)(__pyx_pyframe_localsplus_offset = ((size_t)PyFrame_Type.tp_basicsize) - Py_MEMBER_SIZE(PyFrameObject, f_localsplus)))
   #define __Pyx_PyFrame_GetLocalsplus(frame)\
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 #endif
@@ -1368,9 +1384,9 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected);
 
 /* PyIntBinop.proto */
 #if !CYTHON_COMPILING_IN_PYPY
-static PyObject* __Pyx_PyInt_AddObjC(PyObject *op1, PyObject *op2, long intval, int inplace);
+static PyObject* __Pyx_PyInt_AddObjC(PyObject *op1, PyObject *op2, long intval, int inplace, int zerodivision_check);
 #else
-#define __Pyx_PyInt_AddObjC(op1, op2, intval, inplace)\
+#define __Pyx_PyInt_AddObjC(op1, op2, intval, inplace, zerodivision_check)\
     (inplace ? PyNumber_InPlaceAdd(op1, op2) : PyNumber_Add(op1, op2))
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@@ -3875,7 +3891,7 @@ static PyObject *__pyx_pf_8implicit_3lmf_27LogisticMatrixFactorization_2fit(CYTH
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+    __pyx_t_8 = __Pyx_PyInt_AddObjC(__pyx_t_5, __pyx_int_2, 2, 0, 0); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 144, __pyx_L1_error)
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@@ -3945,7 +3961,7 @@ static PyObject *__pyx_pf_8implicit_3lmf_27LogisticMatrixFactorization_2fit(CYTH
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+    __pyx_t_5 = __Pyx_PyInt_AddObjC(__pyx_t_3, __pyx_int_2, 2, 0, 0); if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 148, __pyx_L1_error)
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+    __pyx_t_8 = __Pyx_PyInt_AddObjC(__pyx_t_3, __pyx_int_2, 2, 0, 0); if (unlikely(!__pyx_t_8)) __PYX_ERR(0, 151, __pyx_L1_error)
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-      /* "View.MemoryView":152
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-      __pyx_t_10 = PyTuple_New(2); if (unlikely(!__pyx_t_10)) __PYX_ERR(1, 152, __pyx_L1_error)
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-      /* "View.MemoryView":151
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@@ -11210,7 +11226,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
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-    /* "View.MemoryView":153
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-  /* "View.MemoryView":156
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-    /* "View.MemoryView":157
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-    /* "View.MemoryView":158
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-  /* "View.MemoryView":159
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-    /* "View.MemoryView":160
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-    /* "View.MemoryView":161
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@@ -11303,7 +11319,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
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-    /* "View.MemoryView":159
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-  /* "View.MemoryView":163
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@@ -11321,18 +11337,18 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
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-  /* "View.MemoryView":165
+  /* "View.MemoryView":166
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-  /* "View.MemoryView":168
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-  /* "View.MemoryView":169
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+  __pyx_t_10 = PyObject_RichCompare(__pyx_v_format, __pyx_n_b_O, Py_EQ); __Pyx_XGOTREF(__pyx_t_10); if (unlikely(!__pyx_t_10)) __PYX_ERR(1, 170, __pyx_L1_error)
+  __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_10); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 170, __pyx_L1_error)
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-  /* "View.MemoryView":170
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-    /* "View.MemoryView":173
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-    /* "View.MemoryView":174
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-      /* "View.MemoryView":175
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-      __pyx_t_10 = __Pyx_PyObject_Call(__pyx_builtin_MemoryError, __pyx_tuple__15, NULL); if (unlikely(!__pyx_t_10)) __PYX_ERR(1, 175, __pyx_L1_error)
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-      __PYX_ERR(1, 175, __pyx_L1_error)
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-      /* "View.MemoryView":174
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@@ -11413,7 +11429,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
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-    /* "View.MemoryView":177
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@@ -11423,7 +11439,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
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-      /* "View.MemoryView":178
+      /* "View.MemoryView":179
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  *             if self.dtype_is_object:
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@@ -11432,7 +11448,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
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       __pyx_v_p = ((PyObject **)__pyx_v_self->data);
 
-      /* "View.MemoryView":179
+      /* "View.MemoryView":180
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  *                 for i in range(self.len / itemsize):             # <<<<<<<<<<<<<<
@@ -11441,18 +11457,18 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
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         PyErr_SetString(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-        __PYX_ERR(1, 179, __pyx_L1_error)
+        __PYX_ERR(1, 180, __pyx_L1_error)
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       else if (sizeof(Py_ssize_t) == sizeof(long) && (!(((Py_ssize_t)-1) > 0)) && unlikely(__pyx_v_itemsize == (Py_ssize_t)-1)  && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_v_self->len))) {
         PyErr_SetString(PyExc_OverflowError, "value too large to perform division");
-        __PYX_ERR(1, 179, __pyx_L1_error)
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-        /* "View.MemoryView":180
+        /* "View.MemoryView":181
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         (__pyx_v_p[__pyx_v_i]) = Py_None;
 
-        /* "View.MemoryView":181
+        /* "View.MemoryView":182
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@@ -11471,7 +11487,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
         Py_INCREF(Py_None);
       }
 
-      /* "View.MemoryView":177
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-    /* "View.MemoryView":170
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@@ -11489,7 +11505,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __
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-  /* "View.MemoryView":121
+  /* "View.MemoryView":122
  *         cdef bint dtype_is_object
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 }
 
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   __pyx_v_info->obj = Py_None; __Pyx_INCREF(Py_None);
   __Pyx_GIVEREF(__pyx_v_info->obj);
 
-  /* "View.MemoryView":185
+  /* "View.MemoryView":186
  *     @cname('getbuffer')
  *     def __getbuffer__(self, Py_buffer *info, int flags):
  *         cdef int bufmode = -1             # <<<<<<<<<<<<<<
@@ -11562,18 +11578,18 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
  */
   __pyx_v_bufmode = -1;
 
-  /* "View.MemoryView":186
+  /* "View.MemoryView":187
  *     def __getbuffer__(self, Py_buffer *info, int flags):
  *         cdef int bufmode = -1
  *         if self.mode == u"c":             # <<<<<<<<<<<<<<
  *             bufmode = PyBUF_C_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         elif self.mode == u"fortran":
  */
-  __pyx_t_1 = (__Pyx_PyUnicode_Equals(__pyx_v_self->mode, __pyx_n_u_c, Py_EQ)); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 186, __pyx_L1_error)
+  __pyx_t_1 = (__Pyx_PyUnicode_Equals(__pyx_v_self->mode, __pyx_n_u_c, Py_EQ)); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 187, __pyx_L1_error)
   __pyx_t_2 = (__pyx_t_1 != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":187
+    /* "View.MemoryView":188
  *         cdef int bufmode = -1
  *         if self.mode == u"c":
  *             bufmode = PyBUF_C_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS             # <<<<<<<<<<<<<<
@@ -11582,7 +11598,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
  */
     __pyx_v_bufmode = (PyBUF_C_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS);
 
-    /* "View.MemoryView":186
+    /* "View.MemoryView":187
  *     def __getbuffer__(self, Py_buffer *info, int flags):
  *         cdef int bufmode = -1
  *         if self.mode == u"c":             # <<<<<<<<<<<<<<
@@ -11592,18 +11608,18 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":188
+  /* "View.MemoryView":189
  *         if self.mode == u"c":
  *             bufmode = PyBUF_C_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         elif self.mode == u"fortran":             # <<<<<<<<<<<<<<
  *             bufmode = PyBUF_F_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         if not (flags & bufmode):
  */
-  __pyx_t_2 = (__Pyx_PyUnicode_Equals(__pyx_v_self->mode, __pyx_n_u_fortran, Py_EQ)); if (unlikely(__pyx_t_2 < 0)) __PYX_ERR(1, 188, __pyx_L1_error)
+  __pyx_t_2 = (__Pyx_PyUnicode_Equals(__pyx_v_self->mode, __pyx_n_u_fortran, Py_EQ)); if (unlikely(__pyx_t_2 < 0)) __PYX_ERR(1, 189, __pyx_L1_error)
   __pyx_t_1 = (__pyx_t_2 != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":189
+    /* "View.MemoryView":190
  *             bufmode = PyBUF_C_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         elif self.mode == u"fortran":
  *             bufmode = PyBUF_F_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS             # <<<<<<<<<<<<<<
@@ -11612,7 +11628,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
  */
     __pyx_v_bufmode = (PyBUF_F_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS);
 
-    /* "View.MemoryView":188
+    /* "View.MemoryView":189
  *         if self.mode == u"c":
  *             bufmode = PyBUF_C_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         elif self.mode == u"fortran":             # <<<<<<<<<<<<<<
@@ -11622,7 +11638,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":190
+  /* "View.MemoryView":191
  *         elif self.mode == u"fortran":
  *             bufmode = PyBUF_F_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         if not (flags & bufmode):             # <<<<<<<<<<<<<<
@@ -11632,20 +11648,20 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __pyx_t_1 = ((!((__pyx_v_flags & __pyx_v_bufmode) != 0)) != 0);
   if (unlikely(__pyx_t_1)) {
 
-    /* "View.MemoryView":191
+    /* "View.MemoryView":192
  *             bufmode = PyBUF_F_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         if not (flags & bufmode):
  *             raise ValueError("Can only create a buffer that is contiguous in memory.")             # <<<<<<<<<<<<<<
  *         info.buf = self.data
  *         info.len = self.len
  */
-    __pyx_t_3 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__16, NULL); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 191, __pyx_L1_error)
+    __pyx_t_3 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__16, NULL); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 192, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_Raise(__pyx_t_3, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __PYX_ERR(1, 191, __pyx_L1_error)
+    __PYX_ERR(1, 192, __pyx_L1_error)
 
-    /* "View.MemoryView":190
+    /* "View.MemoryView":191
  *         elif self.mode == u"fortran":
  *             bufmode = PyBUF_F_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         if not (flags & bufmode):             # <<<<<<<<<<<<<<
@@ -11654,7 +11670,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
  */
   }
 
-  /* "View.MemoryView":192
+  /* "View.MemoryView":193
  *         if not (flags & bufmode):
  *             raise ValueError("Can only create a buffer that is contiguous in memory.")
  *         info.buf = self.data             # <<<<<<<<<<<<<<
@@ -11664,7 +11680,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __pyx_t_4 = __pyx_v_self->data;
   __pyx_v_info->buf = __pyx_t_4;
 
-  /* "View.MemoryView":193
+  /* "View.MemoryView":194
  *             raise ValueError("Can only create a buffer that is contiguous in memory.")
  *         info.buf = self.data
  *         info.len = self.len             # <<<<<<<<<<<<<<
@@ -11674,7 +11690,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __pyx_t_5 = __pyx_v_self->len;
   __pyx_v_info->len = __pyx_t_5;
 
-  /* "View.MemoryView":194
+  /* "View.MemoryView":195
  *         info.buf = self.data
  *         info.len = self.len
  *         info.ndim = self.ndim             # <<<<<<<<<<<<<<
@@ -11684,7 +11700,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __pyx_t_6 = __pyx_v_self->ndim;
   __pyx_v_info->ndim = __pyx_t_6;
 
-  /* "View.MemoryView":195
+  /* "View.MemoryView":196
  *         info.len = self.len
  *         info.ndim = self.ndim
  *         info.shape = self._shape             # <<<<<<<<<<<<<<
@@ -11694,7 +11710,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __pyx_t_7 = __pyx_v_self->_shape;
   __pyx_v_info->shape = __pyx_t_7;
 
-  /* "View.MemoryView":196
+  /* "View.MemoryView":197
  *         info.ndim = self.ndim
  *         info.shape = self._shape
  *         info.strides = self._strides             # <<<<<<<<<<<<<<
@@ -11704,7 +11720,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __pyx_t_7 = __pyx_v_self->_strides;
   __pyx_v_info->strides = __pyx_t_7;
 
-  /* "View.MemoryView":197
+  /* "View.MemoryView":198
  *         info.shape = self._shape
  *         info.strides = self._strides
  *         info.suboffsets = NULL             # <<<<<<<<<<<<<<
@@ -11713,7 +11729,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
  */
   __pyx_v_info->suboffsets = NULL;
 
-  /* "View.MemoryView":198
+  /* "View.MemoryView":199
  *         info.strides = self._strides
  *         info.suboffsets = NULL
  *         info.itemsize = self.itemsize             # <<<<<<<<<<<<<<
@@ -11723,7 +11739,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __pyx_t_5 = __pyx_v_self->itemsize;
   __pyx_v_info->itemsize = __pyx_t_5;
 
-  /* "View.MemoryView":199
+  /* "View.MemoryView":200
  *         info.suboffsets = NULL
  *         info.itemsize = self.itemsize
  *         info.readonly = 0             # <<<<<<<<<<<<<<
@@ -11732,7 +11748,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
  */
   __pyx_v_info->readonly = 0;
 
-  /* "View.MemoryView":201
+  /* "View.MemoryView":202
  *         info.readonly = 0
  * 
  *         if flags & PyBUF_FORMAT:             # <<<<<<<<<<<<<<
@@ -11742,7 +11758,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __pyx_t_1 = ((__pyx_v_flags & PyBUF_FORMAT) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":202
+    /* "View.MemoryView":203
  * 
  *         if flags & PyBUF_FORMAT:
  *             info.format = self.format             # <<<<<<<<<<<<<<
@@ -11752,7 +11768,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
     __pyx_t_4 = __pyx_v_self->format;
     __pyx_v_info->format = __pyx_t_4;
 
-    /* "View.MemoryView":201
+    /* "View.MemoryView":202
  *         info.readonly = 0
  * 
  *         if flags & PyBUF_FORMAT:             # <<<<<<<<<<<<<<
@@ -11762,7 +11778,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
     goto __pyx_L5;
   }
 
-  /* "View.MemoryView":204
+  /* "View.MemoryView":205
  *             info.format = self.format
  *         else:
  *             info.format = NULL             # <<<<<<<<<<<<<<
@@ -11774,7 +11790,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   }
   __pyx_L5:;
 
-  /* "View.MemoryView":206
+  /* "View.MemoryView":207
  *             info.format = NULL
  * 
  *         info.obj = self             # <<<<<<<<<<<<<<
@@ -11787,7 +11803,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   __Pyx_DECREF(__pyx_v_info->obj);
   __pyx_v_info->obj = ((PyObject *)__pyx_v_self);
 
-  /* "View.MemoryView":184
+  /* "View.MemoryView":185
  * 
  *     @cname('getbuffer')
  *     def __getbuffer__(self, Py_buffer *info, int flags):             # <<<<<<<<<<<<<<
@@ -11817,7 +11833,7 @@ static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(stru
   return __pyx_r;
 }
 
-/* "View.MemoryView":210
+/* "View.MemoryView":211
  *     __pyx_getbuffer = capsule(<void *> &__pyx_array_getbuffer, "getbuffer(obj, view, flags)")
  * 
  *     def __dealloc__(array self):             # <<<<<<<<<<<<<<
@@ -11841,7 +11857,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
   int __pyx_t_1;
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "View.MemoryView":211
+  /* "View.MemoryView":212
  * 
  *     def __dealloc__(array self):
  *         if self.callback_free_data != NULL:             # <<<<<<<<<<<<<<
@@ -11851,7 +11867,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
   __pyx_t_1 = ((__pyx_v_self->callback_free_data != NULL) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":212
+    /* "View.MemoryView":213
  *     def __dealloc__(array self):
  *         if self.callback_free_data != NULL:
  *             self.callback_free_data(self.data)             # <<<<<<<<<<<<<<
@@ -11860,7 +11876,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
  */
     __pyx_v_self->callback_free_data(__pyx_v_self->data);
 
-    /* "View.MemoryView":211
+    /* "View.MemoryView":212
  * 
  *     def __dealloc__(array self):
  *         if self.callback_free_data != NULL:             # <<<<<<<<<<<<<<
@@ -11870,7 +11886,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":213
+  /* "View.MemoryView":214
  *         if self.callback_free_data != NULL:
  *             self.callback_free_data(self.data)
  *         elif self.free_data:             # <<<<<<<<<<<<<<
@@ -11880,7 +11896,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
   __pyx_t_1 = (__pyx_v_self->free_data != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":214
+    /* "View.MemoryView":215
  *             self.callback_free_data(self.data)
  *         elif self.free_data:
  *             if self.dtype_is_object:             # <<<<<<<<<<<<<<
@@ -11890,7 +11906,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
     __pyx_t_1 = (__pyx_v_self->dtype_is_object != 0);
     if (__pyx_t_1) {
 
-      /* "View.MemoryView":215
+      /* "View.MemoryView":216
  *         elif self.free_data:
  *             if self.dtype_is_object:
  *                 refcount_objects_in_slice(self.data, self._shape,             # <<<<<<<<<<<<<<
@@ -11899,7 +11915,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
  */
       __pyx_memoryview_refcount_objects_in_slice(__pyx_v_self->data, __pyx_v_self->_shape, __pyx_v_self->_strides, __pyx_v_self->ndim, 0);
 
-      /* "View.MemoryView":214
+      /* "View.MemoryView":215
  *             self.callback_free_data(self.data)
  *         elif self.free_data:
  *             if self.dtype_is_object:             # <<<<<<<<<<<<<<
@@ -11908,7 +11924,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
  */
     }
 
-    /* "View.MemoryView":217
+    /* "View.MemoryView":218
  *                 refcount_objects_in_slice(self.data, self._shape,
  *                                           self._strides, self.ndim, False)
  *             free(self.data)             # <<<<<<<<<<<<<<
@@ -11917,7 +11933,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
  */
     free(__pyx_v_self->data);
 
-    /* "View.MemoryView":213
+    /* "View.MemoryView":214
  *         if self.callback_free_data != NULL:
  *             self.callback_free_data(self.data)
  *         elif self.free_data:             # <<<<<<<<<<<<<<
@@ -11927,7 +11943,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":218
+  /* "View.MemoryView":219
  *                                           self._strides, self.ndim, False)
  *             free(self.data)
  *         PyObject_Free(self._shape)             # <<<<<<<<<<<<<<
@@ -11936,7 +11952,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
  */
   PyObject_Free(__pyx_v_self->_shape);
 
-  /* "View.MemoryView":210
+  /* "View.MemoryView":211
  *     __pyx_getbuffer = capsule(<void *> &__pyx_array_getbuffer, "getbuffer(obj, view, flags)")
  * 
  *     def __dealloc__(array self):             # <<<<<<<<<<<<<<
@@ -11948,7 +11964,7 @@ static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struc
   __Pyx_RefNannyFinishContext();
 }
 
-/* "View.MemoryView":221
+/* "View.MemoryView":222
  * 
  *     @property
  *     def memview(self):             # <<<<<<<<<<<<<<
@@ -11975,7 +11991,7 @@ static PyObject *__pyx_pf_15View_dot_MemoryView_5array_7memview___get__(struct _
   PyObject *__pyx_t_1 = NULL;
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "View.MemoryView":222
+  /* "View.MemoryView":223
  *     @property
  *     def memview(self):
  *         return self.get_memview()             # <<<<<<<<<<<<<<
@@ -11983,13 +11999,13 @@ static PyObject *__pyx_pf_15View_dot_MemoryView_5array_7memview___get__(struct _
  *     @cname('get_memview')
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = ((struct __pyx_vtabstruct_array *)__pyx_v_self->__pyx_vtab)->get_memview(__pyx_v_self); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 222, __pyx_L1_error)
+  __pyx_t_1 = ((struct __pyx_vtabstruct_array *)__pyx_v_self->__pyx_vtab)->get_memview(__pyx_v_self); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 223, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_r = __pyx_t_1;
   __pyx_t_1 = 0;
   goto __pyx_L0;
 
-  /* "View.MemoryView":221
+  /* "View.MemoryView":222
  * 
  *     @property
  *     def memview(self):             # <<<<<<<<<<<<<<
@@ -12008,7 +12024,7 @@ static PyObject *__pyx_pf_15View_dot_MemoryView_5array_7memview___get__(struct _
   return __pyx_r;
 }
 
-/* "View.MemoryView":225
+/* "View.MemoryView":226
  * 
  *     @cname('get_memview')
  *     cdef get_memview(self):             # <<<<<<<<<<<<<<
@@ -12025,7 +12041,7 @@ static PyObject *__pyx_array_get_memview(struct __pyx_array_obj *__pyx_v_self) {
   PyObject *__pyx_t_3 = NULL;
   __Pyx_RefNannySetupContext("get_memview", 0);
 
-  /* "View.MemoryView":226
+  /* "View.MemoryView":227
  *     @cname('get_memview')
  *     cdef get_memview(self):
  *         flags =  PyBUF_ANY_CONTIGUOUS|PyBUF_FORMAT|PyBUF_WRITABLE             # <<<<<<<<<<<<<<
@@ -12034,7 +12050,7 @@ static PyObject *__pyx_array_get_memview(struct __pyx_array_obj *__pyx_v_self) {
  */
   __pyx_v_flags = ((PyBUF_ANY_CONTIGUOUS | PyBUF_FORMAT) | PyBUF_WRITABLE);
 
-  /* "View.MemoryView":227
+  /* "View.MemoryView":228
  *     cdef get_memview(self):
  *         flags =  PyBUF_ANY_CONTIGUOUS|PyBUF_FORMAT|PyBUF_WRITABLE
  *         return  memoryview(self, flags, self.dtype_is_object)             # <<<<<<<<<<<<<<
@@ -12042,11 +12058,11 @@ static PyObject *__pyx_array_get_memview(struct __pyx_array_obj *__pyx_v_self) {
  *     def __len__(self):
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = __Pyx_PyInt_From_int(__pyx_v_flags); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 227, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyInt_From_int(__pyx_v_flags); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 228, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_v_self->dtype_is_object); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 227, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_v_self->dtype_is_object); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 228, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
-  __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 227, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 228, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_INCREF(((PyObject *)__pyx_v_self));
   __Pyx_GIVEREF(((PyObject *)__pyx_v_self));
@@ -12057,14 +12073,14 @@ static PyObject *__pyx_array_get_memview(struct __pyx_array_obj *__pyx_v_self) {
   PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_t_2);
   __pyx_t_1 = 0;
   __pyx_t_2 = 0;
-  __pyx_t_2 = __Pyx_PyObject_Call(((PyObject *)__pyx_memoryview_type), __pyx_t_3, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 227, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyObject_Call(((PyObject *)__pyx_memoryview_type), __pyx_t_3, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 228, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
   __pyx_r = __pyx_t_2;
   __pyx_t_2 = 0;
   goto __pyx_L0;
 
-  /* "View.MemoryView":225
+  /* "View.MemoryView":226
  * 
  *     @cname('get_memview')
  *     cdef get_memview(self):             # <<<<<<<<<<<<<<
@@ -12085,7 +12101,7 @@ static PyObject *__pyx_array_get_memview(struct __pyx_array_obj *__pyx_v_self) {
   return __pyx_r;
 }
 
-/* "View.MemoryView":229
+/* "View.MemoryView":230
  *         return  memoryview(self, flags, self.dtype_is_object)
  * 
  *     def __len__(self):             # <<<<<<<<<<<<<<
@@ -12111,7 +12127,7 @@ static Py_ssize_t __pyx_array___pyx_pf_15View_dot_MemoryView_5array_6__len__(str
   __Pyx_RefNannyDeclarations
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  *         state += (_dict,)
  */
-  __pyx_t_1 = __Pyx_GetAttr3(((PyObject *)__pyx_v_self), __pyx_n_s_dict, Py_None); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 4, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_GetAttr3(((PyObject *)__pyx_v_self), __pyx_n_s_dict, Py_None); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 6, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v__dict = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "(tree fragment)":5
+  /* "(tree fragment)":7
  *     state = (self.name,)
  *     _dict = getattr(self, '__dict__', None)
  *     if _dict is not None:             # <<<<<<<<<<<<<<
@@ -12816,25 +12832,25 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
   __pyx_t_3 = (__pyx_t_2 != 0);
   if (__pyx_t_3) {
 
-    /* "(tree fragment)":6
+    /* "(tree fragment)":8
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  *     if _dict is not None:
  *         state += (_dict,)             # <<<<<<<<<<<<<<
  *         use_setstate = True
  *     else:
  */
-    __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 6, __pyx_L1_error)
+    __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 8, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_INCREF(__pyx_v__dict);
     __Pyx_GIVEREF(__pyx_v__dict);
     PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_v__dict);
-    __pyx_t_4 = PyNumber_InPlaceAdd(__pyx_v_state, __pyx_t_1); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 6, __pyx_L1_error)
+    __pyx_t_4 = PyNumber_InPlaceAdd(__pyx_v_state, __pyx_t_1); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 8, __pyx_L1_error)
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     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     __Pyx_DECREF_SET(__pyx_v_state, ((PyObject*)__pyx_t_4));
     __pyx_t_4 = 0;
 
-    /* "(tree fragment)":7
+    /* "(tree fragment)":9
  *     if _dict is not None:
  *         state += (_dict,)
  *         use_setstate = True             # <<<<<<<<<<<<<<
@@ -12843,7 +12859,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
  */
     __pyx_v_use_setstate = 1;
 
-    /* "(tree fragment)":5
+    /* "(tree fragment)":7
  *     state = (self.name,)
  *     _dict = getattr(self, '__dict__', None)
  *     if _dict is not None:             # <<<<<<<<<<<<<<
@@ -12853,7 +12869,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
     goto __pyx_L3;
   }
 
-  /* "(tree fragment)":9
+  /* "(tree fragment)":11
  *         use_setstate = True
  *     else:
  *         use_setstate = self.name is not None             # <<<<<<<<<<<<<<
@@ -12866,7 +12882,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
   }
   __pyx_L3:;
 
-  /* "(tree fragment)":10
+  /* "(tree fragment)":12
  *     else:
  *         use_setstate = self.name is not None
  *     if use_setstate:             # <<<<<<<<<<<<<<
@@ -12876,7 +12892,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
   __pyx_t_3 = (__pyx_v_use_setstate != 0);
   if (__pyx_t_3) {
 
-    /* "(tree fragment)":11
+    /* "(tree fragment)":13
  *         use_setstate = self.name is not None
  *     if use_setstate:
  *         return __pyx_unpickle_Enum, (type(self), 0xb068931, None), state             # <<<<<<<<<<<<<<
@@ -12884,9 +12900,9 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
  *         return __pyx_unpickle_Enum, (type(self), 0xb068931, state)
  */
     __Pyx_XDECREF(__pyx_r);
-    __Pyx_GetModuleGlobalName(__pyx_t_4, __pyx_n_s_pyx_unpickle_Enum); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 11, __pyx_L1_error)
+    __Pyx_GetModuleGlobalName(__pyx_t_4, __pyx_n_s_pyx_unpickle_Enum); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 13, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_4);
-    __pyx_t_1 = PyTuple_New(3); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 11, __pyx_L1_error)
+    __pyx_t_1 = PyTuple_New(3); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 13, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_INCREF(((PyObject *)Py_TYPE(((PyObject *)__pyx_v_self))));
     __Pyx_GIVEREF(((PyObject *)Py_TYPE(((PyObject *)__pyx_v_self))));
@@ -12897,7 +12913,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
     __Pyx_INCREF(Py_None);
     __Pyx_GIVEREF(Py_None);
     PyTuple_SET_ITEM(__pyx_t_1, 2, Py_None);
-    __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 11, __pyx_L1_error)
+    __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 13, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_5);
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     PyTuple_SET_ITEM(__pyx_t_5, 0, __pyx_t_4);
@@ -12912,7 +12928,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
     __pyx_t_5 = 0;
     goto __pyx_L0;
 
-    /* "(tree fragment)":10
+    /* "(tree fragment)":12
  *     else:
  *         use_setstate = self.name is not None
  *     if use_setstate:             # <<<<<<<<<<<<<<
@@ -12921,7 +12937,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
  */
   }
 
-  /* "(tree fragment)":13
+  /* "(tree fragment)":15
  *         return __pyx_unpickle_Enum, (type(self), 0xb068931, None), state
  *     else:
  *         return __pyx_unpickle_Enum, (type(self), 0xb068931, state)             # <<<<<<<<<<<<<<
@@ -12930,9 +12946,9 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
  */
   /*else*/ {
     __Pyx_XDECREF(__pyx_r);
-    __Pyx_GetModuleGlobalName(__pyx_t_5, __pyx_n_s_pyx_unpickle_Enum); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 13, __pyx_L1_error)
+    __Pyx_GetModuleGlobalName(__pyx_t_5, __pyx_n_s_pyx_unpickle_Enum); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 15, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_5);
-    __pyx_t_1 = PyTuple_New(3); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 13, __pyx_L1_error)
+    __pyx_t_1 = PyTuple_New(3); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 15, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_INCREF(((PyObject *)Py_TYPE(((PyObject *)__pyx_v_self))));
     __Pyx_GIVEREF(((PyObject *)Py_TYPE(((PyObject *)__pyx_v_self))));
@@ -12943,7 +12959,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
     __Pyx_INCREF(__pyx_v_state);
     __Pyx_GIVEREF(__pyx_v_state);
     PyTuple_SET_ITEM(__pyx_t_1, 2, __pyx_v_state);
-    __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 13, __pyx_L1_error)
+    __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 15, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_GIVEREF(__pyx_t_5);
     PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_t_5);
@@ -12958,8 +12974,8 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
 
   /* "(tree fragment)":1
  * def __reduce_cython__(self):             # <<<<<<<<<<<<<<
- *     cdef bint use_setstate
- *     state = (self.name,)
+ *     cdef tuple state
+ *     cdef object _dict
  */
 
   /* function exit code */
@@ -12977,7 +12993,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum___reduce_cython__(struct __pyx_Memvi
   return __pyx_r;
 }
 
-/* "(tree fragment)":14
+/* "(tree fragment)":16
  *     else:
  *         return __pyx_unpickle_Enum, (type(self), 0xb068931, state)
  * def __setstate_cython__(self, __pyx_state):             # <<<<<<<<<<<<<<
@@ -13003,17 +13019,17 @@ static PyObject *__pyx_pf___pyx_MemviewEnum_2__setstate_cython__(struct __pyx_Me
   PyObject *__pyx_t_1 = NULL;
   __Pyx_RefNannySetupContext("__setstate_cython__", 0);
 
-  /* "(tree fragment)":15
+  /* "(tree fragment)":17
  *         return __pyx_unpickle_Enum, (type(self), 0xb068931, state)
  * def __setstate_cython__(self, __pyx_state):
  *     __pyx_unpickle_Enum__set_state(self, __pyx_state)             # <<<<<<<<<<<<<<
  */
-  if (!(likely(PyTuple_CheckExact(__pyx_v___pyx_state))||((__pyx_v___pyx_state) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "tuple", Py_TYPE(__pyx_v___pyx_state)->tp_name), 0))) __PYX_ERR(1, 15, __pyx_L1_error)
-  __pyx_t_1 = __pyx_unpickle_Enum__set_state(__pyx_v_self, ((PyObject*)__pyx_v___pyx_state)); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 15, __pyx_L1_error)
+  if (!(likely(PyTuple_CheckExact(__pyx_v___pyx_state))||((__pyx_v___pyx_state) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "tuple", Py_TYPE(__pyx_v___pyx_state)->tp_name), 0))) __PYX_ERR(1, 17, __pyx_L1_error)
+  __pyx_t_1 = __pyx_unpickle_Enum__set_state(__pyx_v_self, ((PyObject*)__pyx_v___pyx_state)); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 17, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "(tree fragment)":14
+  /* "(tree fragment)":16
  *     else:
  *         return __pyx_unpickle_Enum, (type(self), 0xb068931, state)
  * def __setstate_cython__(self, __pyx_state):             # <<<<<<<<<<<<<<
@@ -13033,7 +13049,7 @@ static PyObject *__pyx_pf___pyx_MemviewEnum_2__setstate_cython__(struct __pyx_Me
   return __pyx_r;
 }
 
-/* "View.MemoryView":297
+/* "View.MemoryView":298
  * 
  * @cname('__pyx_align_pointer')
  * cdef void *align_pointer(void *memory, size_t alignment) nogil:             # <<<<<<<<<<<<<<
@@ -13047,7 +13063,7 @@ static void *__pyx_align_pointer(void *__pyx_v_memory, size_t __pyx_v_alignment)
   void *__pyx_r;
   int __pyx_t_1;
 
-  /* "View.MemoryView":299
+  /* "View.MemoryView":300
  * cdef void *align_pointer(void *memory, size_t alignment) nogil:
  *     "Align pointer memory on a given boundary"
  *     cdef Py_intptr_t aligned_p = <Py_intptr_t> memory             # <<<<<<<<<<<<<<
@@ -13056,7 +13072,7 @@ static void *__pyx_align_pointer(void *__pyx_v_memory, size_t __pyx_v_alignment)
  */
   __pyx_v_aligned_p = ((Py_intptr_t)__pyx_v_memory);
 
-  /* "View.MemoryView":303
+  /* "View.MemoryView":304
  * 
  *     with cython.cdivision(True):
  *         offset = aligned_p % alignment             # <<<<<<<<<<<<<<
@@ -13065,7 +13081,7 @@ static void *__pyx_align_pointer(void *__pyx_v_memory, size_t __pyx_v_alignment)
  */
   __pyx_v_offset = (__pyx_v_aligned_p % __pyx_v_alignment);
 
-  /* "View.MemoryView":305
+  /* "View.MemoryView":306
  *         offset = aligned_p % alignment
  * 
  *     if offset > 0:             # <<<<<<<<<<<<<<
@@ -13075,7 +13091,7 @@ static void *__pyx_align_pointer(void *__pyx_v_memory, size_t __pyx_v_alignment)
   __pyx_t_1 = ((__pyx_v_offset > 0) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":306
+    /* "View.MemoryView":307
  * 
  *     if offset > 0:
  *         aligned_p += alignment - offset             # <<<<<<<<<<<<<<
@@ -13084,7 +13100,7 @@ static void *__pyx_align_pointer(void *__pyx_v_memory, size_t __pyx_v_alignment)
  */
     __pyx_v_aligned_p = (__pyx_v_aligned_p + (__pyx_v_alignment - __pyx_v_offset));
 
-    /* "View.MemoryView":305
+    /* "View.MemoryView":306
  *         offset = aligned_p % alignment
  * 
  *     if offset > 0:             # <<<<<<<<<<<<<<
@@ -13093,7 +13109,7 @@ static void *__pyx_align_pointer(void *__pyx_v_memory, size_t __pyx_v_alignment)
  */
   }
 
-  /* "View.MemoryView":308
+  /* "View.MemoryView":309
  *         aligned_p += alignment - offset
  * 
  *     return <void *> aligned_p             # <<<<<<<<<<<<<<
@@ -13103,7 +13119,7 @@ static void *__pyx_align_pointer(void *__pyx_v_memory, size_t __pyx_v_alignment)
   __pyx_r = ((void *)__pyx_v_aligned_p);
   goto __pyx_L0;
 
-  /* "View.MemoryView":297
+  /* "View.MemoryView":298
  * 
  * @cname('__pyx_align_pointer')
  * cdef void *align_pointer(void *memory, size_t alignment) nogil:             # <<<<<<<<<<<<<<
@@ -13116,7 +13132,7 @@ static void *__pyx_align_pointer(void *__pyx_v_memory, size_t __pyx_v_alignment)
   return __pyx_r;
 }
 
-/* "View.MemoryView":344
+/* "View.MemoryView":345
  *     cdef __Pyx_TypeInfo *typeinfo
  * 
  *     def __cinit__(memoryview self, object obj, int flags, bint dtype_is_object=False):             # <<<<<<<<<<<<<<
@@ -13158,7 +13174,7 @@ static int __pyx_memoryview___cinit__(PyObject *__pyx_v_self, PyObject *__pyx_ar
         case  1:
         if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_flags)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 2, 3, 1); __PYX_ERR(1, 344, __pyx_L3_error)
+          __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 2, 3, 1); __PYX_ERR(1, 345, __pyx_L3_error)
         }
         CYTHON_FALLTHROUGH;
         case  2:
@@ -13168,7 +13184,7 @@ static int __pyx_memoryview___cinit__(PyObject *__pyx_v_self, PyObject *__pyx_ar
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) __PYX_ERR(1, 344, __pyx_L3_error)
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) __PYX_ERR(1, 345, __pyx_L3_error)
       }
     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
@@ -13181,16 +13197,16 @@ static int __pyx_memoryview___cinit__(PyObject *__pyx_v_self, PyObject *__pyx_ar
       }
     }
     __pyx_v_obj = values[0];
-    __pyx_v_flags = __Pyx_PyInt_As_int(values[1]); if (unlikely((__pyx_v_flags == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 344, __pyx_L3_error)
+    __pyx_v_flags = __Pyx_PyInt_As_int(values[1]); if (unlikely((__pyx_v_flags == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 345, __pyx_L3_error)
     if (values[2]) {
-      __pyx_v_dtype_is_object = __Pyx_PyObject_IsTrue(values[2]); if (unlikely((__pyx_v_dtype_is_object == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 344, __pyx_L3_error)
+      __pyx_v_dtype_is_object = __Pyx_PyObject_IsTrue(values[2]); if (unlikely((__pyx_v_dtype_is_object == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 345, __pyx_L3_error)
     } else {
       __pyx_v_dtype_is_object = ((int)0);
     }
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 2, 3, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(1, 344, __pyx_L3_error)
+  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 2, 3, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(1, 345, __pyx_L3_error)
   __pyx_L3_error:;
   __Pyx_AddTraceback("View.MemoryView.memoryview.__cinit__", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -13212,7 +13228,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
   int __pyx_t_4;
   __Pyx_RefNannySetupContext("__cinit__", 0);
 
-  /* "View.MemoryView":345
+  /* "View.MemoryView":346
  * 
  *     def __cinit__(memoryview self, object obj, int flags, bint dtype_is_object=False):
  *         self.obj = obj             # <<<<<<<<<<<<<<
@@ -13225,7 +13241,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
   __Pyx_DECREF(__pyx_v_self->obj);
   __pyx_v_self->obj = __pyx_v_obj;
 
-  /* "View.MemoryView":346
+  /* "View.MemoryView":347
  *     def __cinit__(memoryview self, object obj, int flags, bint dtype_is_object=False):
  *         self.obj = obj
  *         self.flags = flags             # <<<<<<<<<<<<<<
@@ -13234,7 +13250,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
   __pyx_v_self->flags = __pyx_v_flags;
 
-  /* "View.MemoryView":347
+  /* "View.MemoryView":348
  *         self.obj = obj
  *         self.flags = flags
  *         if type(self) is memoryview or obj is not None:             # <<<<<<<<<<<<<<
@@ -13254,16 +13270,16 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
   __pyx_L4_bool_binop_done:;
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":348
+    /* "View.MemoryView":349
  *         self.flags = flags
  *         if type(self) is memoryview or obj is not None:
  *             __Pyx_GetBuffer(obj, &self.view, flags)             # <<<<<<<<<<<<<<
  *             if <PyObject *> self.view.obj == NULL:
  *                 (<__pyx_buffer *> &self.view).obj = Py_None
  */
-    __pyx_t_4 = __Pyx_GetBuffer(__pyx_v_obj, (&__pyx_v_self->view), __pyx_v_flags); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(1, 348, __pyx_L1_error)
+    __pyx_t_4 = __Pyx_GetBuffer(__pyx_v_obj, (&__pyx_v_self->view), __pyx_v_flags); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(1, 349, __pyx_L1_error)
 
-    /* "View.MemoryView":349
+    /* "View.MemoryView":350
  *         if type(self) is memoryview or obj is not None:
  *             __Pyx_GetBuffer(obj, &self.view, flags)
  *             if <PyObject *> self.view.obj == NULL:             # <<<<<<<<<<<<<<
@@ -13273,7 +13289,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
     __pyx_t_1 = ((((PyObject *)__pyx_v_self->view.obj) == NULL) != 0);
     if (__pyx_t_1) {
 
-      /* "View.MemoryView":350
+      /* "View.MemoryView":351
  *             __Pyx_GetBuffer(obj, &self.view, flags)
  *             if <PyObject *> self.view.obj == NULL:
  *                 (<__pyx_buffer *> &self.view).obj = Py_None             # <<<<<<<<<<<<<<
@@ -13282,7 +13298,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
       ((Py_buffer *)(&__pyx_v_self->view))->obj = Py_None;
 
-      /* "View.MemoryView":351
+      /* "View.MemoryView":352
  *             if <PyObject *> self.view.obj == NULL:
  *                 (<__pyx_buffer *> &self.view).obj = Py_None
  *                 Py_INCREF(Py_None)             # <<<<<<<<<<<<<<
@@ -13291,7 +13307,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
       Py_INCREF(Py_None);
 
-      /* "View.MemoryView":349
+      /* "View.MemoryView":350
  *         if type(self) is memoryview or obj is not None:
  *             __Pyx_GetBuffer(obj, &self.view, flags)
  *             if <PyObject *> self.view.obj == NULL:             # <<<<<<<<<<<<<<
@@ -13300,7 +13316,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
     }
 
-    /* "View.MemoryView":347
+    /* "View.MemoryView":348
  *         self.obj = obj
  *         self.flags = flags
  *         if type(self) is memoryview or obj is not None:             # <<<<<<<<<<<<<<
@@ -13309,7 +13325,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
   }
 
-  /* "View.MemoryView":354
+  /* "View.MemoryView":355
  * 
  *         global __pyx_memoryview_thread_locks_used
  *         if __pyx_memoryview_thread_locks_used < THREAD_LOCKS_PREALLOCATED:             # <<<<<<<<<<<<<<
@@ -13319,7 +13335,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
   __pyx_t_1 = ((__pyx_memoryview_thread_locks_used < 8) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":355
+    /* "View.MemoryView":356
  *         global __pyx_memoryview_thread_locks_used
  *         if __pyx_memoryview_thread_locks_used < THREAD_LOCKS_PREALLOCATED:
  *             self.lock = __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used]             # <<<<<<<<<<<<<<
@@ -13328,7 +13344,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
     __pyx_v_self->lock = (__pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used]);
 
-    /* "View.MemoryView":356
+    /* "View.MemoryView":357
  *         if __pyx_memoryview_thread_locks_used < THREAD_LOCKS_PREALLOCATED:
  *             self.lock = __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used]
  *             __pyx_memoryview_thread_locks_used += 1             # <<<<<<<<<<<<<<
@@ -13337,7 +13353,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
     __pyx_memoryview_thread_locks_used = (__pyx_memoryview_thread_locks_used + 1);
 
-    /* "View.MemoryView":354
+    /* "View.MemoryView":355
  * 
  *         global __pyx_memoryview_thread_locks_used
  *         if __pyx_memoryview_thread_locks_used < THREAD_LOCKS_PREALLOCATED:             # <<<<<<<<<<<<<<
@@ -13346,7 +13362,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
   }
 
-  /* "View.MemoryView":357
+  /* "View.MemoryView":358
  *             self.lock = __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used]
  *             __pyx_memoryview_thread_locks_used += 1
  *         if self.lock is NULL:             # <<<<<<<<<<<<<<
@@ -13356,7 +13372,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
   __pyx_t_1 = ((__pyx_v_self->lock == NULL) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":358
+    /* "View.MemoryView":359
  *             __pyx_memoryview_thread_locks_used += 1
  *         if self.lock is NULL:
  *             self.lock = PyThread_allocate_lock()             # <<<<<<<<<<<<<<
@@ -13365,7 +13381,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
     __pyx_v_self->lock = PyThread_allocate_lock();
 
-    /* "View.MemoryView":359
+    /* "View.MemoryView":360
  *         if self.lock is NULL:
  *             self.lock = PyThread_allocate_lock()
  *             if self.lock is NULL:             # <<<<<<<<<<<<<<
@@ -13375,16 +13391,16 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
     __pyx_t_1 = ((__pyx_v_self->lock == NULL) != 0);
     if (unlikely(__pyx_t_1)) {
 
-      /* "View.MemoryView":360
+      /* "View.MemoryView":361
  *             self.lock = PyThread_allocate_lock()
  *             if self.lock is NULL:
  *                 raise MemoryError             # <<<<<<<<<<<<<<
  * 
  *         if flags & PyBUF_FORMAT:
  */
-      PyErr_NoMemory(); __PYX_ERR(1, 360, __pyx_L1_error)
+      PyErr_NoMemory(); __PYX_ERR(1, 361, __pyx_L1_error)
 
-      /* "View.MemoryView":359
+      /* "View.MemoryView":360
  *         if self.lock is NULL:
  *             self.lock = PyThread_allocate_lock()
  *             if self.lock is NULL:             # <<<<<<<<<<<<<<
@@ -13393,7 +13409,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
     }
 
-    /* "View.MemoryView":357
+    /* "View.MemoryView":358
  *             self.lock = __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used]
  *             __pyx_memoryview_thread_locks_used += 1
  *         if self.lock is NULL:             # <<<<<<<<<<<<<<
@@ -13402,7 +13418,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
   }
 
-  /* "View.MemoryView":362
+  /* "View.MemoryView":363
  *                 raise MemoryError
  * 
  *         if flags & PyBUF_FORMAT:             # <<<<<<<<<<<<<<
@@ -13412,7 +13428,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
   __pyx_t_1 = ((__pyx_v_flags & PyBUF_FORMAT) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":363
+    /* "View.MemoryView":364
  * 
  *         if flags & PyBUF_FORMAT:
  *             self.dtype_is_object = (self.view.format[0] == b'O' and self.view.format[1] == b'\0')             # <<<<<<<<<<<<<<
@@ -13430,7 +13446,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
     __pyx_L11_bool_binop_done:;
     __pyx_v_self->dtype_is_object = __pyx_t_1;
 
-    /* "View.MemoryView":362
+    /* "View.MemoryView":363
  *                 raise MemoryError
  * 
  *         if flags & PyBUF_FORMAT:             # <<<<<<<<<<<<<<
@@ -13440,7 +13456,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
     goto __pyx_L10;
   }
 
-  /* "View.MemoryView":365
+  /* "View.MemoryView":366
  *             self.dtype_is_object = (self.view.format[0] == b'O' and self.view.format[1] == b'\0')
  *         else:
  *             self.dtype_is_object = dtype_is_object             # <<<<<<<<<<<<<<
@@ -13452,7 +13468,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
   }
   __pyx_L10:;
 
-  /* "View.MemoryView":367
+  /* "View.MemoryView":368
  *             self.dtype_is_object = dtype_is_object
  * 
  *         self.acquisition_count_aligned_p = <__pyx_atomic_int *> align_pointer(             # <<<<<<<<<<<<<<
@@ -13461,7 +13477,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
   __pyx_v_self->acquisition_count_aligned_p = ((__pyx_atomic_int *)__pyx_align_pointer(((void *)(&(__pyx_v_self->acquisition_count[0]))), (sizeof(__pyx_atomic_int))));
 
-  /* "View.MemoryView":369
+  /* "View.MemoryView":370
  *         self.acquisition_count_aligned_p = <__pyx_atomic_int *> align_pointer(
  *                   <void *> &self.acquisition_count[0], sizeof(__pyx_atomic_int))
  *         self.typeinfo = NULL             # <<<<<<<<<<<<<<
@@ -13470,7 +13486,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
  */
   __pyx_v_self->typeinfo = NULL;
 
-  /* "View.MemoryView":344
+  /* "View.MemoryView":345
  *     cdef __Pyx_TypeInfo *typeinfo
  * 
  *     def __cinit__(memoryview self, object obj, int flags, bint dtype_is_object=False):             # <<<<<<<<<<<<<<
@@ -13489,7 +13505,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview___cinit_
   return __pyx_r;
 }
 
-/* "View.MemoryView":371
+/* "View.MemoryView":372
  *         self.typeinfo = NULL
  * 
  *     def __dealloc__(memoryview self):             # <<<<<<<<<<<<<<
@@ -13520,36 +13536,75 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
   PyThread_type_lock __pyx_t_7;
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "View.MemoryView":372
+  /* "View.MemoryView":373
  * 
  *     def __dealloc__(memoryview self):
  *         if self.obj is not None:             # <<<<<<<<<<<<<<
  *             __Pyx_ReleaseBuffer(&self.view)
- * 
+ *         elif (<__pyx_buffer *> &self.view).obj == Py_None:
  */
   __pyx_t_1 = (__pyx_v_self->obj != Py_None);
   __pyx_t_2 = (__pyx_t_1 != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":373
+    /* "View.MemoryView":374
  *     def __dealloc__(memoryview self):
  *         if self.obj is not None:
  *             __Pyx_ReleaseBuffer(&self.view)             # <<<<<<<<<<<<<<
+ *         elif (<__pyx_buffer *> &self.view).obj == Py_None:
  * 
- *         cdef int i
  */
     __Pyx_ReleaseBuffer((&__pyx_v_self->view));
 
-    /* "View.MemoryView":372
+    /* "View.MemoryView":373
  * 
  *     def __dealloc__(memoryview self):
  *         if self.obj is not None:             # <<<<<<<<<<<<<<
  *             __Pyx_ReleaseBuffer(&self.view)
+ *         elif (<__pyx_buffer *> &self.view).obj == Py_None:
+ */
+    goto __pyx_L3;
+  }
+
+  /* "View.MemoryView":375
+ *         if self.obj is not None:
+ *             __Pyx_ReleaseBuffer(&self.view)
+ *         elif (<__pyx_buffer *> &self.view).obj == Py_None:             # <<<<<<<<<<<<<<
+ * 
+ *             (<__pyx_buffer *> &self.view).obj = NULL
+ */
+  __pyx_t_2 = ((((Py_buffer *)(&__pyx_v_self->view))->obj == Py_None) != 0);
+  if (__pyx_t_2) {
+
+    /* "View.MemoryView":377
+ *         elif (<__pyx_buffer *> &self.view).obj == Py_None:
+ * 
+ *             (<__pyx_buffer *> &self.view).obj = NULL             # <<<<<<<<<<<<<<
+ *             Py_DECREF(Py_None)
+ * 
+ */
+    ((Py_buffer *)(&__pyx_v_self->view))->obj = NULL;
+
+    /* "View.MemoryView":378
+ * 
+ *             (<__pyx_buffer *> &self.view).obj = NULL
+ *             Py_DECREF(Py_None)             # <<<<<<<<<<<<<<
+ * 
+ *         cdef int i
+ */
+    Py_DECREF(Py_None);
+
+    /* "View.MemoryView":375
+ *         if self.obj is not None:
+ *             __Pyx_ReleaseBuffer(&self.view)
+ *         elif (<__pyx_buffer *> &self.view).obj == Py_None:             # <<<<<<<<<<<<<<
  * 
+ *             (<__pyx_buffer *> &self.view).obj = NULL
  */
   }
+  __pyx_L3:;
 
-  /* "View.MemoryView":377
+  /* "View.MemoryView":382
  *         cdef int i
  *         global __pyx_memoryview_thread_locks_used
  *         if self.lock != NULL:             # <<<<<<<<<<<<<<
@@ -13559,7 +13614,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
   __pyx_t_2 = ((__pyx_v_self->lock != NULL) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":378
+    /* "View.MemoryView":383
  *         global __pyx_memoryview_thread_locks_used
  *         if self.lock != NULL:
  *             for i in range(__pyx_memoryview_thread_locks_used):             # <<<<<<<<<<<<<<
@@ -13571,7 +13626,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
     for (__pyx_t_5 = 0; __pyx_t_5 < __pyx_t_4; __pyx_t_5+=1) {
       __pyx_v_i = __pyx_t_5;
 
-      /* "View.MemoryView":379
+      /* "View.MemoryView":384
  *         if self.lock != NULL:
  *             for i in range(__pyx_memoryview_thread_locks_used):
  *                 if __pyx_memoryview_thread_locks[i] is self.lock:             # <<<<<<<<<<<<<<
@@ -13581,7 +13636,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
       __pyx_t_2 = (((__pyx_memoryview_thread_locks[__pyx_v_i]) == __pyx_v_self->lock) != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":380
+        /* "View.MemoryView":385
  *             for i in range(__pyx_memoryview_thread_locks_used):
  *                 if __pyx_memoryview_thread_locks[i] is self.lock:
  *                     __pyx_memoryview_thread_locks_used -= 1             # <<<<<<<<<<<<<<
@@ -13590,7 +13645,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
  */
         __pyx_memoryview_thread_locks_used = (__pyx_memoryview_thread_locks_used - 1);
 
-        /* "View.MemoryView":381
+        /* "View.MemoryView":386
  *                 if __pyx_memoryview_thread_locks[i] is self.lock:
  *                     __pyx_memoryview_thread_locks_used -= 1
  *                     if i != __pyx_memoryview_thread_locks_used:             # <<<<<<<<<<<<<<
@@ -13600,7 +13655,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
         __pyx_t_2 = ((__pyx_v_i != __pyx_memoryview_thread_locks_used) != 0);
         if (__pyx_t_2) {
 
-          /* "View.MemoryView":383
+          /* "View.MemoryView":388
  *                     if i != __pyx_memoryview_thread_locks_used:
  *                         __pyx_memoryview_thread_locks[i], __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used] = (
  *                             __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used], __pyx_memoryview_thread_locks[i])             # <<<<<<<<<<<<<<
@@ -13610,7 +13665,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
           __pyx_t_6 = (__pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used]);
           __pyx_t_7 = (__pyx_memoryview_thread_locks[__pyx_v_i]);
 
-          /* "View.MemoryView":382
+          /* "View.MemoryView":387
  *                     __pyx_memoryview_thread_locks_used -= 1
  *                     if i != __pyx_memoryview_thread_locks_used:
  *                         __pyx_memoryview_thread_locks[i], __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used] = (             # <<<<<<<<<<<<<<
@@ -13620,7 +13675,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
           (__pyx_memoryview_thread_locks[__pyx_v_i]) = __pyx_t_6;
           (__pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used]) = __pyx_t_7;
 
-          /* "View.MemoryView":381
+          /* "View.MemoryView":386
  *                 if __pyx_memoryview_thread_locks[i] is self.lock:
  *                     __pyx_memoryview_thread_locks_used -= 1
  *                     if i != __pyx_memoryview_thread_locks_used:             # <<<<<<<<<<<<<<
@@ -13629,7 +13684,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
  */
         }
 
-        /* "View.MemoryView":384
+        /* "View.MemoryView":389
  *                         __pyx_memoryview_thread_locks[i], __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used] = (
  *                             __pyx_memoryview_thread_locks[__pyx_memoryview_thread_locks_used], __pyx_memoryview_thread_locks[i])
  *                     break             # <<<<<<<<<<<<<<
@@ -13638,7 +13693,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
  */
         goto __pyx_L6_break;
 
-        /* "View.MemoryView":379
+        /* "View.MemoryView":384
  *         if self.lock != NULL:
  *             for i in range(__pyx_memoryview_thread_locks_used):
  *                 if __pyx_memoryview_thread_locks[i] is self.lock:             # <<<<<<<<<<<<<<
@@ -13649,7 +13704,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
     }
     /*else*/ {
 
-      /* "View.MemoryView":386
+      /* "View.MemoryView":391
  *                     break
  *             else:
  *                 PyThread_free_lock(self.lock)             # <<<<<<<<<<<<<<
@@ -13660,7 +13715,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
     }
     __pyx_L6_break:;
 
-    /* "View.MemoryView":377
+    /* "View.MemoryView":382
  *         cdef int i
  *         global __pyx_memoryview_thread_locks_used
  *         if self.lock != NULL:             # <<<<<<<<<<<<<<
@@ -13669,7 +13724,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
  */
   }
 
-  /* "View.MemoryView":371
+  /* "View.MemoryView":372
  *         self.typeinfo = NULL
  * 
  *     def __dealloc__(memoryview self):             # <<<<<<<<<<<<<<
@@ -13681,7 +13736,7 @@ static void __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_2__deal
   __Pyx_RefNannyFinishContext();
 }
 
-/* "View.MemoryView":388
+/* "View.MemoryView":393
  *                 PyThread_free_lock(self.lock)
  * 
  *     cdef char *get_item_pointer(memoryview self, object index) except NULL:             # <<<<<<<<<<<<<<
@@ -13704,7 +13759,7 @@ static char *__pyx_memoryview_get_item_pointer(struct __pyx_memoryview_obj *__py
   char *__pyx_t_7;
   __Pyx_RefNannySetupContext("get_item_pointer", 0);
 
-  /* "View.MemoryView":390
+  /* "View.MemoryView":395
  *     cdef char *get_item_pointer(memoryview self, object index) except NULL:
  *         cdef Py_ssize_t dim
  *         cdef char *itemp = <char *> self.view.buf             # <<<<<<<<<<<<<<
@@ -13713,7 +13768,7 @@ static char *__pyx_memoryview_get_item_pointer(struct __pyx_memoryview_obj *__py
  */
   __pyx_v_itemp = ((char *)__pyx_v_self->view.buf);
 
-  /* "View.MemoryView":392
+  /* "View.MemoryView":397
  *         cdef char *itemp = <char *> self.view.buf
  * 
  *         for dim, idx in enumerate(index):             # <<<<<<<<<<<<<<
@@ -13725,26 +13780,26 @@ static char *__pyx_memoryview_get_item_pointer(struct __pyx_memoryview_obj *__py
     __pyx_t_2 = __pyx_v_index; __Pyx_INCREF(__pyx_t_2); __pyx_t_3 = 0;
     __pyx_t_4 = NULL;
   } else {
-    __pyx_t_3 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_index); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 392, __pyx_L1_error)
+    __pyx_t_3 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_index); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 397, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_4 = Py_TYPE(__pyx_t_2)->tp_iternext; if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 392, __pyx_L1_error)
+    __pyx_t_4 = Py_TYPE(__pyx_t_2)->tp_iternext; if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 397, __pyx_L1_error)
   }
   for (;;) {
     if (likely(!__pyx_t_4)) {
       if (likely(PyList_CheckExact(__pyx_t_2))) {
         if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_2)) break;
         #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
-        __pyx_t_5 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_5); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(1, 392, __pyx_L1_error)
+        __pyx_t_5 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_5); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(1, 397, __pyx_L1_error)
         #else
-        __pyx_t_5 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 392, __pyx_L1_error)
+        __pyx_t_5 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 397, __pyx_L1_error)
         __Pyx_GOTREF(__pyx_t_5);
         #endif
       } else {
         if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
         #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
-        __pyx_t_5 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_5); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(1, 392, __pyx_L1_error)
+        __pyx_t_5 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_5); __pyx_t_3++; if (unlikely(0 < 0)) __PYX_ERR(1, 397, __pyx_L1_error)
         #else
-        __pyx_t_5 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 392, __pyx_L1_error)
+        __pyx_t_5 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 397, __pyx_L1_error)
         __Pyx_GOTREF(__pyx_t_5);
         #endif
       }
@@ -13754,7 +13809,7 @@ static char *__pyx_memoryview_get_item_pointer(struct __pyx_memoryview_obj *__py
         PyObject* exc_type = PyErr_Occurred();
         if (exc_type) {
           if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
-          else __PYX_ERR(1, 392, __pyx_L1_error)
+          else __PYX_ERR(1, 397, __pyx_L1_error)
         }
         break;
       }
@@ -13765,18 +13820,18 @@ static char *__pyx_memoryview_get_item_pointer(struct __pyx_memoryview_obj *__py
     __pyx_v_dim = __pyx_t_1;
     __pyx_t_1 = (__pyx_t_1 + 1);
 
-    /* "View.MemoryView":393
+    /* "View.MemoryView":398
  * 
  *         for dim, idx in enumerate(index):
  *             itemp = pybuffer_index(&self.view, itemp, idx, dim)             # <<<<<<<<<<<<<<
  * 
  *         return itemp
  */
-    __pyx_t_6 = __Pyx_PyIndex_AsSsize_t(__pyx_v_idx); if (unlikely((__pyx_t_6 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 393, __pyx_L1_error)
-    __pyx_t_7 = __pyx_pybuffer_index((&__pyx_v_self->view), __pyx_v_itemp, __pyx_t_6, __pyx_v_dim); if (unlikely(__pyx_t_7 == ((char *)NULL))) __PYX_ERR(1, 393, __pyx_L1_error)
+    __pyx_t_6 = __Pyx_PyIndex_AsSsize_t(__pyx_v_idx); if (unlikely((__pyx_t_6 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 398, __pyx_L1_error)
+    __pyx_t_7 = __pyx_pybuffer_index((&__pyx_v_self->view), __pyx_v_itemp, __pyx_t_6, __pyx_v_dim); if (unlikely(__pyx_t_7 == ((char *)NULL))) __PYX_ERR(1, 398, __pyx_L1_error)
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-    /* "View.MemoryView":392
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@@ -13786,7 +13841,7 @@ static char *__pyx_memoryview_get_item_pointer(struct __pyx_memoryview_obj *__py
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-  /* "View.MemoryView":395
+  /* "View.MemoryView":400
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@@ -13796,7 +13851,7 @@ static char *__pyx_memoryview_get_item_pointer(struct __pyx_memoryview_obj *__py
   __pyx_r = __pyx_v_itemp;
   goto __pyx_L0;
 
-  /* "View.MemoryView":388
+  /* "View.MemoryView":393
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  *     cdef char *get_item_pointer(memoryview self, object index) except NULL:             # <<<<<<<<<<<<<<
@@ -13816,7 +13871,7 @@ static char *__pyx_memoryview_get_item_pointer(struct __pyx_memoryview_obj *__py
   return __pyx_r;
 }
 
-/* "View.MemoryView":398
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  *     def __getitem__(memoryview self, object index):             # <<<<<<<<<<<<<<
@@ -13851,7 +13906,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
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-  /* "View.MemoryView":399
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@@ -13862,7 +13917,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
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-    /* "View.MemoryView":400
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-    /* "View.MemoryView":399
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@@ -13883,14 +13938,14 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
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-  /* "View.MemoryView":402
+  /* "View.MemoryView":407
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  *         have_slices, indices = _unellipsify(index, self.view.ndim)             # <<<<<<<<<<<<<<
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  *         cdef char *itemp
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+  __pyx_t_3 = _unellipsify(__pyx_v_index, __pyx_v_self->view.ndim); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 407, __pyx_L1_error)
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@@ -13898,7 +13953,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
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@@ -13906,31 +13961,31 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
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-    __pyx_t_4 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 402, __pyx_L1_error)
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-    __pyx_t_5 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 402, __pyx_L1_error)
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-    __Pyx_RaiseNoneNotIterableError(); __PYX_ERR(1, 402, __pyx_L1_error)
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-  /* "View.MemoryView":405
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-  __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_have_slices); if (unlikely(__pyx_t_2 < 0)) __PYX_ERR(1, 405, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_have_slices); if (unlikely(__pyx_t_2 < 0)) __PYX_ERR(1, 410, __pyx_L1_error)
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-    /* "View.MemoryView":406
+    /* "View.MemoryView":411
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+    __pyx_t_3 = ((PyObject *)__pyx_memview_slice(__pyx_v_self, __pyx_v_indices)); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 411, __pyx_L1_error)
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-    /* "View.MemoryView":405
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@@ -13953,7 +14008,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
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-  /* "View.MemoryView":408
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@@ -13961,10 +14016,10 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
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+    __pyx_t_6 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->get_item_pointer(__pyx_v_self, __pyx_v_indices); if (unlikely(__pyx_t_6 == ((char *)NULL))) __PYX_ERR(1, 413, __pyx_L1_error)
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-    /* "View.MemoryView":409
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@@ -13972,14 +14027,14 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
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     __Pyx_XDECREF(__pyx_r);
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+    __pyx_t_3 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->convert_item_to_object(__pyx_v_self, __pyx_v_itemp); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 414, __pyx_L1_error)
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     __pyx_r = __pyx_t_3;
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-  /* "View.MemoryView":398
+  /* "View.MemoryView":403
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@@ -14002,7 +14057,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_4_
   return __pyx_r;
 }
 
-/* "View.MemoryView":411
+/* "View.MemoryView":416
  *             return self.convert_item_to_object(itemp)
  * 
  *     def __setitem__(memoryview self, object index, object value):             # <<<<<<<<<<<<<<
@@ -14035,7 +14090,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
   __Pyx_RefNannySetupContext("__setitem__", 0);
   __Pyx_INCREF(__pyx_v_index);
 
-  /* "View.MemoryView":412
+  /* "View.MemoryView":417
  * 
  *     def __setitem__(memoryview self, object index, object value):
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@@ -14045,20 +14100,20 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
   __pyx_t_1 = (__pyx_v_self->view.readonly != 0);
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-    /* "View.MemoryView":413
+    /* "View.MemoryView":418
  *     def __setitem__(memoryview self, object index, object value):
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  *             raise TypeError("Cannot assign to read-only memoryview")             # <<<<<<<<<<<<<<
  * 
  *         have_slices, index = _unellipsify(index, self.view.ndim)
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-    __pyx_t_2 = __Pyx_PyObject_Call(__pyx_builtin_TypeError, __pyx_tuple__19, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 413, __pyx_L1_error)
+    __pyx_t_2 = __Pyx_PyObject_Call(__pyx_builtin_TypeError, __pyx_tuple__19, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 418, __pyx_L1_error)
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-    __PYX_ERR(1, 413, __pyx_L1_error)
+    __PYX_ERR(1, 418, __pyx_L1_error)
 
-    /* "View.MemoryView":412
+    /* "View.MemoryView":417
  * 
  *     def __setitem__(memoryview self, object index, object value):
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@@ -14067,14 +14122,14 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
  */
   }
 
-  /* "View.MemoryView":415
+  /* "View.MemoryView":420
  *             raise TypeError("Cannot assign to read-only memoryview")
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  *         have_slices, index = _unellipsify(index, self.view.ndim)             # <<<<<<<<<<<<<<
  * 
  *         if have_slices:
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-  __pyx_t_2 = _unellipsify(__pyx_v_index, __pyx_v_self->view.ndim); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 415, __pyx_L1_error)
+  __pyx_t_2 = _unellipsify(__pyx_v_index, __pyx_v_self->view.ndim); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 420, __pyx_L1_error)
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@@ -14082,7 +14137,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
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@@ -14090,67 +14145,67 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
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-    __pyx_t_3 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 415, __pyx_L1_error)
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-    __pyx_t_4 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 415, __pyx_L1_error)
+    __pyx_t_4 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 420, __pyx_L1_error)
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-    __Pyx_RaiseNoneNotIterableError(); __PYX_ERR(1, 415, __pyx_L1_error)
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-  /* "View.MemoryView":417
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  *         if have_slices:             # <<<<<<<<<<<<<<
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+  __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_v_have_slices); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 422, __pyx_L1_error)
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-    /* "View.MemoryView":418
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  *         if have_slices:
  *             obj = self.is_slice(value)             # <<<<<<<<<<<<<<
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-    __pyx_t_2 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->is_slice(__pyx_v_self, __pyx_v_value); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 418, __pyx_L1_error)
+    __pyx_t_2 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->is_slice(__pyx_v_self, __pyx_v_value); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 423, __pyx_L1_error)
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-    /* "View.MemoryView":419
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  *                 self.setitem_slice_assignment(self[index], obj)
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-    __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_v_obj); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 419, __pyx_L1_error)
+    __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_v_obj); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 424, __pyx_L1_error)
     if (__pyx_t_1) {
 
-      /* "View.MemoryView":420
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-      __pyx_t_2 = __Pyx_PyObject_GetItem(((PyObject *)__pyx_v_self), __pyx_v_index); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 420, __pyx_L1_error)
+      __pyx_t_2 = __Pyx_PyObject_GetItem(((PyObject *)__pyx_v_self), __pyx_v_index); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 425, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_4 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->setitem_slice_assignment(__pyx_v_self, __pyx_t_2, __pyx_v_obj); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 420, __pyx_L1_error)
+      __pyx_t_4 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->setitem_slice_assignment(__pyx_v_self, __pyx_t_2, __pyx_v_obj); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 425, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_4);
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-      /* "View.MemoryView":419
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@@ -14160,7 +14215,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
       goto __pyx_L5;
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-    /* "View.MemoryView":422
+    /* "View.MemoryView":427
  *                 self.setitem_slice_assignment(self[index], obj)
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@@ -14168,17 +14223,17 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
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+      __pyx_t_4 = __Pyx_PyObject_GetItem(((PyObject *)__pyx_v_self), __pyx_v_index); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 427, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_4);
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-      __pyx_t_2 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->setitem_slice_assign_scalar(__pyx_v_self, ((struct __pyx_memoryview_obj *)__pyx_t_4), __pyx_v_value); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 422, __pyx_L1_error)
+      if (!(likely(((__pyx_t_4) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_4, __pyx_memoryview_type))))) __PYX_ERR(1, 427, __pyx_L1_error)
+      __pyx_t_2 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->setitem_slice_assign_scalar(__pyx_v_self, ((struct __pyx_memoryview_obj *)__pyx_t_4), __pyx_v_value); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 427, __pyx_L1_error)
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     __pyx_L5:;
 
-    /* "View.MemoryView":417
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  *         if have_slices:             # <<<<<<<<<<<<<<
@@ -14188,7 +14243,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
     goto __pyx_L4;
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-  /* "View.MemoryView":424
+  /* "View.MemoryView":429
  *                 self.setitem_slice_assign_scalar(self[index], value)
  *         else:
  *             self.setitem_indexed(index, value)             # <<<<<<<<<<<<<<
@@ -14196,13 +14251,13 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
  *     cdef is_slice(self, obj):
  */
   /*else*/ {
-    __pyx_t_2 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->setitem_indexed(__pyx_v_self, __pyx_v_index, __pyx_v_value); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 424, __pyx_L1_error)
+    __pyx_t_2 = ((struct __pyx_vtabstruct_memoryview *)__pyx_v_self->__pyx_vtab)->setitem_indexed(__pyx_v_self, __pyx_v_index, __pyx_v_value); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 429, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
   }
   __pyx_L4:;
 
-  /* "View.MemoryView":411
+  /* "View.MemoryView":416
  *             return self.convert_item_to_object(itemp)
  * 
  *     def __setitem__(memoryview self, object index, object value):             # <<<<<<<<<<<<<<
@@ -14227,7 +14282,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_6__setit
   return __pyx_r;
 }
 
-/* "View.MemoryView":426
+/* "View.MemoryView":431
  *             self.setitem_indexed(index, value)
  * 
  *     cdef is_slice(self, obj):             # <<<<<<<<<<<<<<
@@ -14250,22 +14305,22 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
   __Pyx_RefNannySetupContext("is_slice", 0);
   __Pyx_INCREF(__pyx_v_obj);
 
-  /* "View.MemoryView":427
+  /* "View.MemoryView":432
  * 
  *     cdef is_slice(self, obj):
  *         if not isinstance(obj, memoryview):             # <<<<<<<<<<<<<<
  *             try:
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,
  */
   __pyx_t_1 = __Pyx_TypeCheck(__pyx_v_obj, __pyx_memoryview_type); 
   __pyx_t_2 = ((!(__pyx_t_1 != 0)) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":428
+    /* "View.MemoryView":433
  *     cdef is_slice(self, obj):
  *         if not isinstance(obj, memoryview):
  *             try:             # <<<<<<<<<<<<<<
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,
  *                                  self.dtype_is_object)
  */
     {
@@ -14277,34 +14332,34 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
       __Pyx_XGOTREF(__pyx_t_5);
       /*try:*/ {
 
-        /* "View.MemoryView":429
+        /* "View.MemoryView":434
  *         if not isinstance(obj, memoryview):
  *             try:
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,             # <<<<<<<<<<<<<<
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,             # <<<<<<<<<<<<<<
  *                                  self.dtype_is_object)
  *             except TypeError:
  */
-        __pyx_t_6 = __Pyx_PyInt_From_int((__pyx_v_self->flags | PyBUF_ANY_CONTIGUOUS)); if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 429, __pyx_L4_error)
+        __pyx_t_6 = __Pyx_PyInt_From_int(((__pyx_v_self->flags & (~PyBUF_WRITABLE)) | PyBUF_ANY_CONTIGUOUS)); if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 434, __pyx_L4_error)
         __Pyx_GOTREF(__pyx_t_6);
 
-        /* "View.MemoryView":430
+        /* "View.MemoryView":435
  *             try:
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,
  *                                  self.dtype_is_object)             # <<<<<<<<<<<<<<
  *             except TypeError:
  *                 return None
  */
-        __pyx_t_7 = __Pyx_PyBool_FromLong(__pyx_v_self->dtype_is_object); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 430, __pyx_L4_error)
+        __pyx_t_7 = __Pyx_PyBool_FromLong(__pyx_v_self->dtype_is_object); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 435, __pyx_L4_error)
         __Pyx_GOTREF(__pyx_t_7);
 
-        /* "View.MemoryView":429
+        /* "View.MemoryView":434
  *         if not isinstance(obj, memoryview):
  *             try:
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,             # <<<<<<<<<<<<<<
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,             # <<<<<<<<<<<<<<
  *                                  self.dtype_is_object)
  *             except TypeError:
  */
-        __pyx_t_8 = PyTuple_New(3); if (unlikely(!__pyx_t_8)) __PYX_ERR(1, 429, __pyx_L4_error)
+        __pyx_t_8 = PyTuple_New(3); if (unlikely(!__pyx_t_8)) __PYX_ERR(1, 434, __pyx_L4_error)
         __Pyx_GOTREF(__pyx_t_8);
         __Pyx_INCREF(__pyx_v_obj);
         __Pyx_GIVEREF(__pyx_v_obj);
@@ -14315,17 +14370,17 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
         PyTuple_SET_ITEM(__pyx_t_8, 2, __pyx_t_7);
         __pyx_t_6 = 0;
         __pyx_t_7 = 0;
-        __pyx_t_7 = __Pyx_PyObject_Call(((PyObject *)__pyx_memoryview_type), __pyx_t_8, NULL); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 429, __pyx_L4_error)
+        __pyx_t_7 = __Pyx_PyObject_Call(((PyObject *)__pyx_memoryview_type), __pyx_t_8, NULL); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 434, __pyx_L4_error)
         __Pyx_GOTREF(__pyx_t_7);
         __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
         __Pyx_DECREF_SET(__pyx_v_obj, __pyx_t_7);
         __pyx_t_7 = 0;
 
-        /* "View.MemoryView":428
+        /* "View.MemoryView":433
  *     cdef is_slice(self, obj):
  *         if not isinstance(obj, memoryview):
  *             try:             # <<<<<<<<<<<<<<
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,
  *                                  self.dtype_is_object)
  */
       }
@@ -14335,11 +14390,11 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
       goto __pyx_L9_try_end;
       __pyx_L4_error:;
       __Pyx_XDECREF(__pyx_t_6); __pyx_t_6 = 0;
-      __Pyx_XDECREF(__pyx_t_8); __pyx_t_8 = 0;
       __Pyx_XDECREF(__pyx_t_7); __pyx_t_7 = 0;
+      __Pyx_XDECREF(__pyx_t_8); __pyx_t_8 = 0;
 
-      /* "View.MemoryView":431
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,
+      /* "View.MemoryView":436
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,
  *                                  self.dtype_is_object)
  *             except TypeError:             # <<<<<<<<<<<<<<
  *                 return None
@@ -14348,12 +14403,12 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
       __pyx_t_9 = __Pyx_PyErr_ExceptionMatches(__pyx_builtin_TypeError);
       if (__pyx_t_9) {
         __Pyx_AddTraceback("View.MemoryView.memoryview.is_slice", __pyx_clineno, __pyx_lineno, __pyx_filename);
-        if (__Pyx_GetException(&__pyx_t_7, &__pyx_t_8, &__pyx_t_6) < 0) __PYX_ERR(1, 431, __pyx_L6_except_error)
+        if (__Pyx_GetException(&__pyx_t_7, &__pyx_t_8, &__pyx_t_6) < 0) __PYX_ERR(1, 436, __pyx_L6_except_error)
         __Pyx_GOTREF(__pyx_t_7);
         __Pyx_GOTREF(__pyx_t_8);
         __Pyx_GOTREF(__pyx_t_6);
 
-        /* "View.MemoryView":432
+        /* "View.MemoryView":437
  *                                  self.dtype_is_object)
  *             except TypeError:
  *                 return None             # <<<<<<<<<<<<<<
@@ -14370,11 +14425,11 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
       goto __pyx_L6_except_error;
       __pyx_L6_except_error:;
 
-      /* "View.MemoryView":428
+      /* "View.MemoryView":433
  *     cdef is_slice(self, obj):
  *         if not isinstance(obj, memoryview):
  *             try:             # <<<<<<<<<<<<<<
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,
  *                                  self.dtype_is_object)
  */
       __Pyx_XGIVEREF(__pyx_t_3);
@@ -14391,16 +14446,16 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
       __pyx_L9_try_end:;
     }
 
-    /* "View.MemoryView":427
+    /* "View.MemoryView":432
  * 
  *     cdef is_slice(self, obj):
  *         if not isinstance(obj, memoryview):             # <<<<<<<<<<<<<<
  *             try:
- *                 obj = memoryview(obj, self.flags|PyBUF_ANY_CONTIGUOUS,
+ *                 obj = memoryview(obj, self.flags & ~PyBUF_WRITABLE | PyBUF_ANY_CONTIGUOUS,
  */
   }
 
-  /* "View.MemoryView":434
+  /* "View.MemoryView":439
  *                 return None
  * 
  *         return obj             # <<<<<<<<<<<<<<
@@ -14412,7 +14467,7 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
   __pyx_r = __pyx_v_obj;
   goto __pyx_L0;
 
-  /* "View.MemoryView":426
+  /* "View.MemoryView":431
  *             self.setitem_indexed(index, value)
  * 
  *     cdef is_slice(self, obj):             # <<<<<<<<<<<<<<
@@ -14434,7 +14489,7 @@ static PyObject *__pyx_memoryview_is_slice(struct __pyx_memoryview_obj *__pyx_v_
   return __pyx_r;
 }
 
-/* "View.MemoryView":436
+/* "View.MemoryView":441
  *         return obj
  * 
  *     cdef setitem_slice_assignment(self, dst, src):             # <<<<<<<<<<<<<<
@@ -14453,50 +14508,50 @@ static PyObject *__pyx_memoryview_setitem_slice_assignment(struct __pyx_memoryvi
   int __pyx_t_4;
   __Pyx_RefNannySetupContext("setitem_slice_assignment", 0);
 
-  /* "View.MemoryView":440
+  /* "View.MemoryView":445
  *         cdef __Pyx_memviewslice src_slice
  * 
  *         memoryview_copy_contents(get_slice_from_memview(src, &src_slice)[0],             # <<<<<<<<<<<<<<
  *                                  get_slice_from_memview(dst, &dst_slice)[0],
  *                                  src.ndim, dst.ndim, self.dtype_is_object)
  */
-  if (!(likely(((__pyx_v_src) == Py_None) || likely(__Pyx_TypeTest(__pyx_v_src, __pyx_memoryview_type))))) __PYX_ERR(1, 440, __pyx_L1_error)
+  if (!(likely(((__pyx_v_src) == Py_None) || likely(__Pyx_TypeTest(__pyx_v_src, __pyx_memoryview_type))))) __PYX_ERR(1, 445, __pyx_L1_error)
 
-  /* "View.MemoryView":441
+  /* "View.MemoryView":446
  * 
  *         memoryview_copy_contents(get_slice_from_memview(src, &src_slice)[0],
  *                                  get_slice_from_memview(dst, &dst_slice)[0],             # <<<<<<<<<<<<<<
  *                                  src.ndim, dst.ndim, self.dtype_is_object)
  * 
  */
-  if (!(likely(((__pyx_v_dst) == Py_None) || likely(__Pyx_TypeTest(__pyx_v_dst, __pyx_memoryview_type))))) __PYX_ERR(1, 441, __pyx_L1_error)
+  if (!(likely(((__pyx_v_dst) == Py_None) || likely(__Pyx_TypeTest(__pyx_v_dst, __pyx_memoryview_type))))) __PYX_ERR(1, 446, __pyx_L1_error)
 
-  /* "View.MemoryView":442
+  /* "View.MemoryView":447
  *         memoryview_copy_contents(get_slice_from_memview(src, &src_slice)[0],
  *                                  get_slice_from_memview(dst, &dst_slice)[0],
  *                                  src.ndim, dst.ndim, self.dtype_is_object)             # <<<<<<<<<<<<<<
  * 
  *     cdef setitem_slice_assign_scalar(self, memoryview dst, value):
  */
-  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_src, __pyx_n_s_ndim); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 442, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_src, __pyx_n_s_ndim); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 447, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = __Pyx_PyInt_As_int(__pyx_t_1); if (unlikely((__pyx_t_2 == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 442, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyInt_As_int(__pyx_t_1); if (unlikely((__pyx_t_2 == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 447, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_dst, __pyx_n_s_ndim); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 442, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_dst, __pyx_n_s_ndim); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 447, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_3 = __Pyx_PyInt_As_int(__pyx_t_1); if (unlikely((__pyx_t_3 == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 442, __pyx_L1_error)
+  __pyx_t_3 = __Pyx_PyInt_As_int(__pyx_t_1); if (unlikely((__pyx_t_3 == (int)-1) && PyErr_Occurred())) __PYX_ERR(1, 447, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "View.MemoryView":440
+  /* "View.MemoryView":445
  *         cdef __Pyx_memviewslice src_slice
  * 
  *         memoryview_copy_contents(get_slice_from_memview(src, &src_slice)[0],             # <<<<<<<<<<<<<<
  *                                  get_slice_from_memview(dst, &dst_slice)[0],
  *                                  src.ndim, dst.ndim, self.dtype_is_object)
  */
-  __pyx_t_4 = __pyx_memoryview_copy_contents((__pyx_memoryview_get_slice_from_memoryview(((struct __pyx_memoryview_obj *)__pyx_v_src), (&__pyx_v_src_slice))[0]), (__pyx_memoryview_get_slice_from_memoryview(((struct __pyx_memoryview_obj *)__pyx_v_dst), (&__pyx_v_dst_slice))[0]), __pyx_t_2, __pyx_t_3, __pyx_v_self->dtype_is_object); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(1, 440, __pyx_L1_error)
+  __pyx_t_4 = __pyx_memoryview_copy_contents((__pyx_memoryview_get_slice_from_memoryview(((struct __pyx_memoryview_obj *)__pyx_v_src), (&__pyx_v_src_slice))[0]), (__pyx_memoryview_get_slice_from_memoryview(((struct __pyx_memoryview_obj *)__pyx_v_dst), (&__pyx_v_dst_slice))[0]), __pyx_t_2, __pyx_t_3, __pyx_v_self->dtype_is_object); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(1, 445, __pyx_L1_error)
 
-  /* "View.MemoryView":436
+  /* "View.MemoryView":441
  *         return obj
  * 
  *     cdef setitem_slice_assignment(self, dst, src):             # <<<<<<<<<<<<<<
@@ -14517,7 +14572,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assignment(struct __pyx_memoryvi
   return __pyx_r;
 }
 
-/* "View.MemoryView":444
+/* "View.MemoryView":449
  *                                  src.ndim, dst.ndim, self.dtype_is_object)
  * 
  *     cdef setitem_slice_assign_scalar(self, memoryview dst, value):             # <<<<<<<<<<<<<<
@@ -14546,7 +14601,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
   PyObject *__pyx_t_11 = NULL;
   __Pyx_RefNannySetupContext("setitem_slice_assign_scalar", 0);
 
-  /* "View.MemoryView":446
+  /* "View.MemoryView":451
  *     cdef setitem_slice_assign_scalar(self, memoryview dst, value):
  *         cdef int array[128]
  *         cdef void *tmp = NULL             # <<<<<<<<<<<<<<
@@ -14555,7 +14610,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
  */
   __pyx_v_tmp = NULL;
 
-  /* "View.MemoryView":451
+  /* "View.MemoryView":456
  *         cdef __Pyx_memviewslice *dst_slice
  *         cdef __Pyx_memviewslice tmp_slice
  *         dst_slice = get_slice_from_memview(dst, &tmp_slice)             # <<<<<<<<<<<<<<
@@ -14564,7 +14619,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
  */
   __pyx_v_dst_slice = __pyx_memoryview_get_slice_from_memoryview(__pyx_v_dst, (&__pyx_v_tmp_slice));
 
-  /* "View.MemoryView":453
+  /* "View.MemoryView":458
  *         dst_slice = get_slice_from_memview(dst, &tmp_slice)
  * 
  *         if <size_t>self.view.itemsize > sizeof(array):             # <<<<<<<<<<<<<<
@@ -14574,7 +14629,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
   __pyx_t_1 = ((((size_t)__pyx_v_self->view.itemsize) > (sizeof(__pyx_v_array))) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":454
+    /* "View.MemoryView":459
  * 
  *         if <size_t>self.view.itemsize > sizeof(array):
  *             tmp = PyMem_Malloc(self.view.itemsize)             # <<<<<<<<<<<<<<
@@ -14583,7 +14638,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
  */
     __pyx_v_tmp = PyMem_Malloc(__pyx_v_self->view.itemsize);
 
-    /* "View.MemoryView":455
+    /* "View.MemoryView":460
  *         if <size_t>self.view.itemsize > sizeof(array):
  *             tmp = PyMem_Malloc(self.view.itemsize)
  *             if tmp == NULL:             # <<<<<<<<<<<<<<
@@ -14593,16 +14648,16 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
     __pyx_t_1 = ((__pyx_v_tmp == NULL) != 0);
     if (unlikely(__pyx_t_1)) {
 
-      /* "View.MemoryView":456
+      /* "View.MemoryView":461
  *             tmp = PyMem_Malloc(self.view.itemsize)
  *             if tmp == NULL:
  *                 raise MemoryError             # <<<<<<<<<<<<<<
  *             item = tmp
  *         else:
  */
-      PyErr_NoMemory(); __PYX_ERR(1, 456, __pyx_L1_error)
+      PyErr_NoMemory(); __PYX_ERR(1, 461, __pyx_L1_error)
 
-      /* "View.MemoryView":455
+      /* "View.MemoryView":460
  *         if <size_t>self.view.itemsize > sizeof(array):
  *             tmp = PyMem_Malloc(self.view.itemsize)
  *             if tmp == NULL:             # <<<<<<<<<<<<<<
@@ -14611,7 +14666,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
  */
     }
 
-    /* "View.MemoryView":457
+    /* "View.MemoryView":462
  *             if tmp == NULL:
  *                 raise MemoryError
  *             item = tmp             # <<<<<<<<<<<<<<
@@ -14620,7 +14675,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
  */
     __pyx_v_item = __pyx_v_tmp;
 
-    /* "View.MemoryView":453
+    /* "View.MemoryView":458
  *         dst_slice = get_slice_from_memview(dst, &tmp_slice)
  * 
  *         if <size_t>self.view.itemsize > sizeof(array):             # <<<<<<<<<<<<<<
@@ -14630,7 +14685,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":459
+  /* "View.MemoryView":464
  *             item = tmp
  *         else:
  *             item = <void *> array             # <<<<<<<<<<<<<<
@@ -14642,7 +14697,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":461
+  /* "View.MemoryView":466
  *             item = <void *> array
  * 
  *         try:             # <<<<<<<<<<<<<<
@@ -14651,7 +14706,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
  */
   /*try:*/ {
 
-    /* "View.MemoryView":462
+    /* "View.MemoryView":467
  * 
  *         try:
  *             if self.dtype_is_object:             # <<<<<<<<<<<<<<
@@ -14661,7 +14716,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
     __pyx_t_1 = (__pyx_v_self->dtype_is_object != 0);
     if (__pyx_t_1) {
 
-      /* "View.MemoryView":463
+      /* "View.MemoryView":468
  *         try:
  *             if self.dtype_is_object:
  *                 (<PyObject **> item)[0] = <PyObject *> value             # <<<<<<<<<<<<<<
@@ -14670,7 +14725,7 @@ static PyObject *__pyx_memoryview_setitem_slice_assign_scalar(struct __pyx_memor
  */
       (((PyObject **)__pyx_v_item)[0]) = ((PyObject *)__pyx_v_value);
 
-      /* "View.MemoryView":462
+      /* "View.MemoryView":467
  * 
  *         try:
  *             if self.dtype_is_object:             # <<<<<<<<<<<<<<
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-    /* "View.MemoryView":465
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-    /* "View.MemoryView":471
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-    /* "View.MemoryView":492
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-        /* "View.MemoryView":493
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-        /* "View.MemoryView":492
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   if (__pyx_t_3) {
 
-    /* "View.MemoryView":505
+    /* "View.MemoryView":510
  * 
  *         if isinstance(value, tuple):
  *             bytesvalue = struct.pack(self.view.format, *value)             # <<<<<<<<<<<<<<
  *         else:
  *             bytesvalue = struct.pack(self.view.format, value)
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+    __pyx_t_4 = __Pyx_PyBytes_FromString(__pyx_v_self->view.format); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 510, __pyx_L1_error)
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-    __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 505, __pyx_L1_error)
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-    __pyx_t_4 = __Pyx_PySequence_Tuple(__pyx_v_value); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 505, __pyx_L1_error)
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+    __pyx_t_6 = PyNumber_Add(__pyx_t_5, __pyx_t_4); if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 510, __pyx_L1_error)
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+    __pyx_t_4 = __Pyx_PyObject_Call(__pyx_t_1, __pyx_t_6, NULL); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 510, __pyx_L1_error)
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-    if (!(likely(PyBytes_CheckExact(__pyx_t_4))||((__pyx_t_4) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "bytes", Py_TYPE(__pyx_t_4)->tp_name), 0))) __PYX_ERR(1, 505, __pyx_L1_error)
+    if (!(likely(PyBytes_CheckExact(__pyx_t_4))||((__pyx_t_4) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "bytes", Py_TYPE(__pyx_t_4)->tp_name), 0))) __PYX_ERR(1, 510, __pyx_L1_error)
     __pyx_v_bytesvalue = ((PyObject*)__pyx_t_4);
     __pyx_t_4 = 0;
 
-    /* "View.MemoryView":504
+    /* "View.MemoryView":509
  *         cdef Py_ssize_t i
  * 
  *         if isinstance(value, tuple):             # <<<<<<<<<<<<<<
@@ -15228,7 +15283,7 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":507
+  /* "View.MemoryView":512
  *             bytesvalue = struct.pack(self.view.format, *value)
  *         else:
  *             bytesvalue = struct.pack(self.view.format, value)             # <<<<<<<<<<<<<<
@@ -15236,9 +15291,9 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
  *         for i, c in enumerate(bytesvalue):
  */
   /*else*/ {
-    __pyx_t_6 = __Pyx_PyObject_GetAttrStr(__pyx_v_struct, __pyx_n_s_pack); if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 507, __pyx_L1_error)
+    __pyx_t_6 = __Pyx_PyObject_GetAttrStr(__pyx_v_struct, __pyx_n_s_pack); if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 512, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_6);
-    __pyx_t_1 = __Pyx_PyBytes_FromString(__pyx_v_self->view.format); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 507, __pyx_L1_error)
+    __pyx_t_1 = __Pyx_PyBytes_FromString(__pyx_v_self->view.format); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 512, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_t_5 = NULL;
     __pyx_t_7 = 0;
@@ -15255,7 +15310,7 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
     #if CYTHON_FAST_PYCALL
     if (PyFunction_Check(__pyx_t_6)) {
       PyObject *__pyx_temp[3] = {__pyx_t_5, __pyx_t_1, __pyx_v_value};
-      __pyx_t_4 = __Pyx_PyFunction_FastCall(__pyx_t_6, __pyx_temp+1-__pyx_t_7, 2+__pyx_t_7); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 507, __pyx_L1_error)
+      __pyx_t_4 = __Pyx_PyFunction_FastCall(__pyx_t_6, __pyx_temp+1-__pyx_t_7, 2+__pyx_t_7); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 512, __pyx_L1_error)
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       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -15264,14 +15319,14 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
     #if CYTHON_FAST_PYCCALL
     if (__Pyx_PyFastCFunction_Check(__pyx_t_6)) {
       PyObject *__pyx_temp[3] = {__pyx_t_5, __pyx_t_1, __pyx_v_value};
-      __pyx_t_4 = __Pyx_PyCFunction_FastCall(__pyx_t_6, __pyx_temp+1-__pyx_t_7, 2+__pyx_t_7); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 507, __pyx_L1_error)
+      __pyx_t_4 = __Pyx_PyCFunction_FastCall(__pyx_t_6, __pyx_temp+1-__pyx_t_7, 2+__pyx_t_7); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 512, __pyx_L1_error)
       __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0;
       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
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     #endif
     {
-      __pyx_t_8 = PyTuple_New(2+__pyx_t_7); if (unlikely(!__pyx_t_8)) __PYX_ERR(1, 507, __pyx_L1_error)
+      __pyx_t_8 = PyTuple_New(2+__pyx_t_7); if (unlikely(!__pyx_t_8)) __PYX_ERR(1, 512, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_8);
       if (__pyx_t_5) {
         __Pyx_GIVEREF(__pyx_t_5); PyTuple_SET_ITEM(__pyx_t_8, 0, __pyx_t_5); __pyx_t_5 = NULL;
@@ -15282,18 +15337,18 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
       __Pyx_GIVEREF(__pyx_v_value);
       PyTuple_SET_ITEM(__pyx_t_8, 1+__pyx_t_7, __pyx_v_value);
       __pyx_t_1 = 0;
-      __pyx_t_4 = __Pyx_PyObject_Call(__pyx_t_6, __pyx_t_8, NULL); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 507, __pyx_L1_error)
+      __pyx_t_4 = __Pyx_PyObject_Call(__pyx_t_6, __pyx_t_8, NULL); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 512, __pyx_L1_error)
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       __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
     }
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-    if (!(likely(PyBytes_CheckExact(__pyx_t_4))||((__pyx_t_4) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "bytes", Py_TYPE(__pyx_t_4)->tp_name), 0))) __PYX_ERR(1, 507, __pyx_L1_error)
+    if (!(likely(PyBytes_CheckExact(__pyx_t_4))||((__pyx_t_4) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "bytes", Py_TYPE(__pyx_t_4)->tp_name), 0))) __PYX_ERR(1, 512, __pyx_L1_error)
     __pyx_v_bytesvalue = ((PyObject*)__pyx_t_4);
     __pyx_t_4 = 0;
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":509
+  /* "View.MemoryView":514
  *             bytesvalue = struct.pack(self.view.format, value)
  * 
  *         for i, c in enumerate(bytesvalue):             # <<<<<<<<<<<<<<
@@ -15303,7 +15358,7 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
   __pyx_t_9 = 0;
   if (unlikely(__pyx_v_bytesvalue == Py_None)) {
     PyErr_SetString(PyExc_TypeError, "'NoneType' is not iterable");
-    __PYX_ERR(1, 509, __pyx_L1_error)
+    __PYX_ERR(1, 514, __pyx_L1_error)
   }
   __Pyx_INCREF(__pyx_v_bytesvalue);
   __pyx_t_10 = __pyx_v_bytesvalue;
@@ -15313,7 +15368,7 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
     __pyx_t_11 = __pyx_t_14;
     __pyx_v_c = (__pyx_t_11[0]);
 
-    /* "View.MemoryView":510
+    /* "View.MemoryView":515
  * 
  *         for i, c in enumerate(bytesvalue):
  *             itemp[i] = c             # <<<<<<<<<<<<<<
@@ -15322,7 +15377,7 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
  */
     __pyx_v_i = __pyx_t_9;
 
-    /* "View.MemoryView":509
+    /* "View.MemoryView":514
  *             bytesvalue = struct.pack(self.view.format, value)
  * 
  *         for i, c in enumerate(bytesvalue):             # <<<<<<<<<<<<<<
@@ -15331,7 +15386,7 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
  */
     __pyx_t_9 = (__pyx_t_9 + 1);
 
-    /* "View.MemoryView":510
+    /* "View.MemoryView":515
  * 
  *         for i, c in enumerate(bytesvalue):
  *             itemp[i] = c             # <<<<<<<<<<<<<<
@@ -15342,7 +15397,7 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
   }
   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
 
-  /* "View.MemoryView":496
+  /* "View.MemoryView":501
  *             return result
  * 
  *     cdef assign_item_from_object(self, char *itemp, object value):             # <<<<<<<<<<<<<<
@@ -15370,7 +15425,7 @@ static PyObject *__pyx_memoryview_assign_item_from_object(struct __pyx_memoryvie
   return __pyx_r;
 }
 
-/* "View.MemoryView":513
+/* "View.MemoryView":518
  * 
  *     @cname('getbuffer')
  *     def __getbuffer__(self, Py_buffer *info, int flags):             # <<<<<<<<<<<<<<
@@ -15410,7 +15465,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   __pyx_v_info->obj = Py_None; __Pyx_INCREF(Py_None);
   __Pyx_GIVEREF(__pyx_v_info->obj);
 
-  /* "View.MemoryView":514
+  /* "View.MemoryView":519
  *     @cname('getbuffer')
  *     def __getbuffer__(self, Py_buffer *info, int flags):
  *         if flags & PyBUF_WRITABLE and self.view.readonly:             # <<<<<<<<<<<<<<
@@ -15428,20 +15483,20 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   __pyx_L4_bool_binop_done:;
   if (unlikely(__pyx_t_1)) {
 
-    /* "View.MemoryView":515
+    /* "View.MemoryView":520
  *     def __getbuffer__(self, Py_buffer *info, int flags):
  *         if flags & PyBUF_WRITABLE and self.view.readonly:
  *             raise ValueError("Cannot create writable memory view from read-only memoryview")             # <<<<<<<<<<<<<<
  * 
- *         if flags & PyBUF_STRIDES:
+ *         if flags & PyBUF_ND:
  */
-    __pyx_t_3 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__21, NULL); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 515, __pyx_L1_error)
+    __pyx_t_3 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__21, NULL); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 520, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_Raise(__pyx_t_3, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __PYX_ERR(1, 515, __pyx_L1_error)
+    __PYX_ERR(1, 520, __pyx_L1_error)
 
-    /* "View.MemoryView":514
+    /* "View.MemoryView":519
  *     @cname('getbuffer')
  *     def __getbuffer__(self, Py_buffer *info, int flags):
  *         if flags & PyBUF_WRITABLE and self.view.readonly:             # <<<<<<<<<<<<<<
@@ -15450,19 +15505,19 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
  */
   }
 
-  /* "View.MemoryView":517
+  /* "View.MemoryView":522
  *             raise ValueError("Cannot create writable memory view from read-only memoryview")
  * 
- *         if flags & PyBUF_STRIDES:             # <<<<<<<<<<<<<<
+ *         if flags & PyBUF_ND:             # <<<<<<<<<<<<<<
  *             info.shape = self.view.shape
  *         else:
  */
-  __pyx_t_1 = ((__pyx_v_flags & PyBUF_STRIDES) != 0);
+  __pyx_t_1 = ((__pyx_v_flags & PyBUF_ND) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":518
+    /* "View.MemoryView":523
  * 
- *         if flags & PyBUF_STRIDES:
+ *         if flags & PyBUF_ND:
  *             info.shape = self.view.shape             # <<<<<<<<<<<<<<
  *         else:
  *             info.shape = NULL
@@ -15470,17 +15525,17 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
     __pyx_t_4 = __pyx_v_self->view.shape;
     __pyx_v_info->shape = __pyx_t_4;
 
-    /* "View.MemoryView":517
+    /* "View.MemoryView":522
  *             raise ValueError("Cannot create writable memory view from read-only memoryview")
  * 
- *         if flags & PyBUF_STRIDES:             # <<<<<<<<<<<<<<
+ *         if flags & PyBUF_ND:             # <<<<<<<<<<<<<<
  *             info.shape = self.view.shape
  *         else:
  */
     goto __pyx_L6;
   }
 
-  /* "View.MemoryView":520
+  /* "View.MemoryView":525
  *             info.shape = self.view.shape
  *         else:
  *             info.shape = NULL             # <<<<<<<<<<<<<<
@@ -15492,7 +15547,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   }
   __pyx_L6:;
 
-  /* "View.MemoryView":522
+  /* "View.MemoryView":527
  *             info.shape = NULL
  * 
  *         if flags & PyBUF_STRIDES:             # <<<<<<<<<<<<<<
@@ -15502,7 +15557,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   __pyx_t_1 = ((__pyx_v_flags & PyBUF_STRIDES) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":523
+    /* "View.MemoryView":528
  * 
  *         if flags & PyBUF_STRIDES:
  *             info.strides = self.view.strides             # <<<<<<<<<<<<<<
@@ -15512,7 +15567,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
     __pyx_t_4 = __pyx_v_self->view.strides;
     __pyx_v_info->strides = __pyx_t_4;
 
-    /* "View.MemoryView":522
+    /* "View.MemoryView":527
  *             info.shape = NULL
  * 
  *         if flags & PyBUF_STRIDES:             # <<<<<<<<<<<<<<
@@ -15522,7 +15577,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
     goto __pyx_L7;
   }
 
-  /* "View.MemoryView":525
+  /* "View.MemoryView":530
  *             info.strides = self.view.strides
  *         else:
  *             info.strides = NULL             # <<<<<<<<<<<<<<
@@ -15534,7 +15589,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   }
   __pyx_L7:;
 
-  /* "View.MemoryView":527
+  /* "View.MemoryView":532
  *             info.strides = NULL
  * 
  *         if flags & PyBUF_INDIRECT:             # <<<<<<<<<<<<<<
@@ -15544,7 +15599,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   __pyx_t_1 = ((__pyx_v_flags & PyBUF_INDIRECT) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":528
+    /* "View.MemoryView":533
  * 
  *         if flags & PyBUF_INDIRECT:
  *             info.suboffsets = self.view.suboffsets             # <<<<<<<<<<<<<<
@@ -15554,7 +15609,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
     __pyx_t_4 = __pyx_v_self->view.suboffsets;
     __pyx_v_info->suboffsets = __pyx_t_4;
 
-    /* "View.MemoryView":527
+    /* "View.MemoryView":532
  *             info.strides = NULL
  * 
  *         if flags & PyBUF_INDIRECT:             # <<<<<<<<<<<<<<
@@ -15564,7 +15619,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
     goto __pyx_L8;
   }
 
-  /* "View.MemoryView":530
+  /* "View.MemoryView":535
  *             info.suboffsets = self.view.suboffsets
  *         else:
  *             info.suboffsets = NULL             # <<<<<<<<<<<<<<
@@ -15576,7 +15631,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   }
   __pyx_L8:;
 
-  /* "View.MemoryView":532
+  /* "View.MemoryView":537
  *             info.suboffsets = NULL
  * 
  *         if flags & PyBUF_FORMAT:             # <<<<<<<<<<<<<<
@@ -15586,7 +15641,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   __pyx_t_1 = ((__pyx_v_flags & PyBUF_FORMAT) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":533
+    /* "View.MemoryView":538
  * 
  *         if flags & PyBUF_FORMAT:
  *             info.format = self.view.format             # <<<<<<<<<<<<<<
@@ -15596,7 +15651,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
     __pyx_t_5 = __pyx_v_self->view.format;
     __pyx_v_info->format = __pyx_t_5;
 
-    /* "View.MemoryView":532
+    /* "View.MemoryView":537
  *             info.suboffsets = NULL
  * 
  *         if flags & PyBUF_FORMAT:             # <<<<<<<<<<<<<<
@@ -15606,7 +15661,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
     goto __pyx_L9;
   }
 
-  /* "View.MemoryView":535
+  /* "View.MemoryView":540
  *             info.format = self.view.format
  *         else:
  *             info.format = NULL             # <<<<<<<<<<<<<<
@@ -15618,7 +15673,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   }
   __pyx_L9:;
 
-  /* "View.MemoryView":537
+  /* "View.MemoryView":542
  *             info.format = NULL
  * 
  *         info.buf = self.view.buf             # <<<<<<<<<<<<<<
@@ -15628,7 +15683,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   __pyx_t_6 = __pyx_v_self->view.buf;
   __pyx_v_info->buf = __pyx_t_6;
 
-  /* "View.MemoryView":538
+  /* "View.MemoryView":543
  * 
  *         info.buf = self.view.buf
  *         info.ndim = self.view.ndim             # <<<<<<<<<<<<<<
@@ -15638,7 +15693,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   __pyx_t_7 = __pyx_v_self->view.ndim;
   __pyx_v_info->ndim = __pyx_t_7;
 
-  /* "View.MemoryView":539
+  /* "View.MemoryView":544
  *         info.buf = self.view.buf
  *         info.ndim = self.view.ndim
  *         info.itemsize = self.view.itemsize             # <<<<<<<<<<<<<<
@@ -15648,7 +15703,7 @@ static int __pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_8__getbu
   __pyx_t_8 = __pyx_v_self->view.itemsize;
   __pyx_v_info->itemsize = __pyx_t_8;
 
-  /* "View.MemoryView":540
+  /* "View.MemoryView":545
  *         info.ndim = self.view.ndim
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  *         info.len = self.view.len             # <<<<<<<<<<<<<<
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  * 
  *     def copy(self):             # <<<<<<<<<<<<<<
@@ -16906,7 +16961,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_20
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-  /* "View.MemoryView":628
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@@ -16915,7 +16970,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_20
  */
   __pyx_v_flags = (__pyx_v_self->flags & (~PyBUF_F_CONTIGUOUS));
 
-  /* "View.MemoryView":630
+  /* "View.MemoryView":635
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  *         slice_copy(self, &mslice)             # <<<<<<<<<<<<<<
@@ -16924,17 +16979,17 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_20
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-  /* "View.MemoryView":631
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+  __pyx_t_1 = __pyx_memoryview_copy_new_contig((&__pyx_v_mslice), ((char *)"c"), __pyx_v_self->view.ndim, __pyx_v_self->view.itemsize, (__pyx_v_flags | PyBUF_C_CONTIGUOUS), __pyx_v_self->dtype_is_object); if (unlikely(PyErr_Occurred())) __PYX_ERR(1, 636, __pyx_L1_error)
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-  /* "View.MemoryView":636
+  /* "View.MemoryView":641
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  *         return memoryview_copy_from_slice(self, &mslice)             # <<<<<<<<<<<<<<
@@ -16942,13 +16997,13 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_20
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+  __pyx_t_2 = __pyx_memoryview_copy_object_from_slice(__pyx_v_self, (&__pyx_v_mslice)); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 641, __pyx_L1_error)
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-  /* "View.MemoryView":626
+  /* "View.MemoryView":631
  *         return slice_is_contig(mslice[0], 'F', self.view.ndim)
  * 
  *     def copy(self):             # <<<<<<<<<<<<<<
@@ -16967,7 +17022,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_20
   return __pyx_r;
 }
 
-/* "View.MemoryView":638
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  * 
  *     def copy_fortran(self):             # <<<<<<<<<<<<<<
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-  /* "View.MemoryView":640
+  /* "View.MemoryView":645
  *     def copy_fortran(self):
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@@ -17007,7 +17062,7 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_22
  */
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-  /* "View.MemoryView":642
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  *         slice_copy(self, &src)             # <<<<<<<<<<<<<<
@@ -17016,17 +17071,17 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_22
  */
   __pyx_memoryview_slice_copy(__pyx_v_self, (&__pyx_v_src));
 
-  /* "View.MemoryView":643
+  /* "View.MemoryView":648
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  *         slice_copy(self, &src)
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  *                                 self.view.itemsize,
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  */
-  __pyx_t_1 = __pyx_memoryview_copy_new_contig((&__pyx_v_src), ((char *)"fortran"), __pyx_v_self->view.ndim, __pyx_v_self->view.itemsize, (__pyx_v_flags | PyBUF_F_CONTIGUOUS), __pyx_v_self->dtype_is_object); if (unlikely(PyErr_Occurred())) __PYX_ERR(1, 643, __pyx_L1_error)
+  __pyx_t_1 = __pyx_memoryview_copy_new_contig((&__pyx_v_src), ((char *)"fortran"), __pyx_v_self->view.ndim, __pyx_v_self->view.itemsize, (__pyx_v_flags | PyBUF_F_CONTIGUOUS), __pyx_v_self->dtype_is_object); if (unlikely(PyErr_Occurred())) __PYX_ERR(1, 648, __pyx_L1_error)
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-  /* "View.MemoryView":648
+  /* "View.MemoryView":653
  *                                 self.dtype_is_object)
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  *         return memoryview_copy_from_slice(self, &dst)             # <<<<<<<<<<<<<<
@@ -17034,13 +17089,13 @@ static PyObject *__pyx_memoryview___pyx_pf_15View_dot_MemoryView_10memoryview_22
  * 
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_2 = __pyx_memoryview_copy_object_from_slice(__pyx_v_self, (&__pyx_v_dst)); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 648, __pyx_L1_error)
+  __pyx_t_2 = __pyx_memoryview_copy_object_from_slice(__pyx_v_self, (&__pyx_v_dst)); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 653, __pyx_L1_error)
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-  /* "View.MemoryView":638
+  /* "View.MemoryView":643
  *         return memoryview_copy_from_slice(self, &mslice)
  * 
  *     def copy_fortran(self):             # <<<<<<<<<<<<<<
@@ -17166,7 +17221,7 @@ static PyObject *__pyx_pf___pyx_memoryview_2__setstate_cython__(CYTHON_UNUSED st
   return __pyx_r;
 }
 
-/* "View.MemoryView":652
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@@ -17183,18 +17238,18 @@ static PyObject *__pyx_memoryview_new(PyObject *__pyx_v_o, int __pyx_v_flags, in
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-  /* "View.MemoryView":653
+  /* "View.MemoryView":658
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-  __pyx_t_1 = __Pyx_PyInt_From_int(__pyx_v_flags); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 653, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyInt_From_int(__pyx_v_flags); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 658, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_v_dtype_is_object); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 653, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_v_dtype_is_object); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 658, __pyx_L1_error)
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-  __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 653, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 658, __pyx_L1_error)
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@@ -17205,13 +17260,13 @@ static PyObject *__pyx_memoryview_new(PyObject *__pyx_v_o, int __pyx_v_flags, in
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   __pyx_t_1 = 0;
   __pyx_t_2 = 0;
-  __pyx_t_2 = __Pyx_PyObject_Call(((PyObject *)__pyx_memoryview_type), __pyx_t_3, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 653, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyObject_Call(((PyObject *)__pyx_memoryview_type), __pyx_t_3, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 658, __pyx_L1_error)
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   __pyx_v_result = ((struct __pyx_memoryview_obj *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "View.MemoryView":654
+  /* "View.MemoryView":659
  * cdef memoryview_cwrapper(object o, int flags, bint dtype_is_object, __Pyx_TypeInfo *typeinfo):
  *     cdef memoryview result = memoryview(o, flags, dtype_is_object)
  *     result.typeinfo = typeinfo             # <<<<<<<<<<<<<<
@@ -17220,7 +17275,7 @@ static PyObject *__pyx_memoryview_new(PyObject *__pyx_v_o, int __pyx_v_flags, in
  */
   __pyx_v_result->typeinfo = __pyx_v_typeinfo;
 
-  /* "View.MemoryView":655
+  /* "View.MemoryView":660
  *     cdef memoryview result = memoryview(o, flags, dtype_is_object)
  *     result.typeinfo = typeinfo
  *     return result             # <<<<<<<<<<<<<<
@@ -17232,7 +17287,7 @@ static PyObject *__pyx_memoryview_new(PyObject *__pyx_v_o, int __pyx_v_flags, in
   __pyx_r = ((PyObject *)__pyx_v_result);
   goto __pyx_L0;
 
-  /* "View.MemoryView":652
+  /* "View.MemoryView":657
  * 
  * @cname('__pyx_memoryview_new')
  * cdef memoryview_cwrapper(object o, int flags, bint dtype_is_object, __Pyx_TypeInfo *typeinfo):             # <<<<<<<<<<<<<<
@@ -17254,7 +17309,7 @@ static PyObject *__pyx_memoryview_new(PyObject *__pyx_v_o, int __pyx_v_flags, in
   return __pyx_r;
 }
 
-/* "View.MemoryView":658
+/* "View.MemoryView":663
  * 
  * @cname('__pyx_memoryview_check')
  * cdef inline bint memoryview_check(object o):             # <<<<<<<<<<<<<<
@@ -17268,7 +17323,7 @@ static CYTHON_INLINE int __pyx_memoryview_check(PyObject *__pyx_v_o) {
   int __pyx_t_1;
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-  /* "View.MemoryView":659
+  /* "View.MemoryView":664
  * @cname('__pyx_memoryview_check')
  * cdef inline bint memoryview_check(object o):
  *     return isinstance(o, memoryview)             # <<<<<<<<<<<<<<
@@ -17279,7 +17334,7 @@ static CYTHON_INLINE int __pyx_memoryview_check(PyObject *__pyx_v_o) {
   __pyx_r = __pyx_t_1;
   goto __pyx_L0;
 
-  /* "View.MemoryView":658
+  /* "View.MemoryView":663
  * 
  * @cname('__pyx_memoryview_check')
  * cdef inline bint memoryview_check(object o):             # <<<<<<<<<<<<<<
@@ -17293,7 +17348,7 @@ static CYTHON_INLINE int __pyx_memoryview_check(PyObject *__pyx_v_o) {
   return __pyx_r;
 }
 
-/* "View.MemoryView":661
+/* "View.MemoryView":666
  *     return isinstance(o, memoryview)
  * 
  * cdef tuple _unellipsify(object index, int ndim):             # <<<<<<<<<<<<<<
@@ -17324,7 +17379,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
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-  /* "View.MemoryView":666
+  /* "View.MemoryView":671
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   __pyx_t_2 = ((!(__pyx_t_1 != 0)) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":667
+    /* "View.MemoryView":672
  *     """
  *     if not isinstance(index, tuple):
  *         tup = (index,)             # <<<<<<<<<<<<<<
  *     else:
  *         tup = index
  */
-    __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 667, __pyx_L1_error)
+    __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 672, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_INCREF(__pyx_v_index);
     __Pyx_GIVEREF(__pyx_v_index);
@@ -17350,7 +17405,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
     __pyx_v_tup = __pyx_t_3;
     __pyx_t_3 = 0;
 
-    /* "View.MemoryView":666
+    /* "View.MemoryView":671
  *     full slices.
  *     """
  *     if not isinstance(index, tuple):             # <<<<<<<<<<<<<<
@@ -17360,7 +17415,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":669
+  /* "View.MemoryView":674
  *         tup = (index,)
  *     else:
  *         tup = index             # <<<<<<<<<<<<<<
@@ -17373,19 +17428,19 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":671
+  /* "View.MemoryView":676
  *         tup = index
  * 
  *     result = []             # <<<<<<<<<<<<<<
  *     have_slices = False
  *     seen_ellipsis = False
  */
-  __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 671, __pyx_L1_error)
+  __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 676, __pyx_L1_error)
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   __pyx_t_3 = 0;
 
-  /* "View.MemoryView":672
+  /* "View.MemoryView":677
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  *     result = []
  *     have_slices = False             # <<<<<<<<<<<<<<
@@ -17394,7 +17449,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
  */
   __pyx_v_have_slices = 0;
 
-  /* "View.MemoryView":673
+  /* "View.MemoryView":678
  *     result = []
  *     have_slices = False
  *     seen_ellipsis = False             # <<<<<<<<<<<<<<
@@ -17403,7 +17458,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
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   __pyx_v_seen_ellipsis = 0;
 
-  /* "View.MemoryView":674
+  /* "View.MemoryView":679
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  *     seen_ellipsis = False
  *     for idx, item in enumerate(tup):             # <<<<<<<<<<<<<<
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+    __pyx_t_5 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_v_tup); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 679, __pyx_L1_error)
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-    __pyx_t_6 = Py_TYPE(__pyx_t_4)->tp_iternext; if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 674, __pyx_L1_error)
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+        __pyx_t_7 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_5); __Pyx_INCREF(__pyx_t_7); __pyx_t_5++; if (unlikely(0 < 0)) __PYX_ERR(1, 679, __pyx_L1_error)
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@@ -17445,7 +17500,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
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@@ -17455,13 +17510,13 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
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-    /* "View.MemoryView":675
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-      /* "View.MemoryView":676
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@@ -17482,15 +17537,15 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
       __pyx_t_1 = ((!(__pyx_v_seen_ellipsis != 0)) != 0);
       if (__pyx_t_1) {
 
-        /* "View.MemoryView":677
+        /* "View.MemoryView":682
  *         if item is Ellipsis:
  *             if not seen_ellipsis:
  *                 result.extend([slice(None)] * (ndim - len(tup) + 1))             # <<<<<<<<<<<<<<
  *                 seen_ellipsis = True
  *             else:
  */
-        __pyx_t_8 = PyObject_Length(__pyx_v_tup); if (unlikely(__pyx_t_8 == ((Py_ssize_t)-1))) __PYX_ERR(1, 677, __pyx_L1_error)
-        __pyx_t_7 = PyList_New(1 * ((((__pyx_v_ndim - __pyx_t_8) + 1)<0) ? 0:((__pyx_v_ndim - __pyx_t_8) + 1))); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 677, __pyx_L1_error)
+        __pyx_t_8 = PyObject_Length(__pyx_v_tup); if (unlikely(__pyx_t_8 == ((Py_ssize_t)-1))) __PYX_ERR(1, 682, __pyx_L1_error)
+        __pyx_t_7 = PyList_New(1 * ((((__pyx_v_ndim - __pyx_t_8) + 1)<0) ? 0:((__pyx_v_ndim - __pyx_t_8) + 1))); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 682, __pyx_L1_error)
         __Pyx_GOTREF(__pyx_t_7);
         { Py_ssize_t __pyx_temp;
           for (__pyx_temp=0; __pyx_temp < ((__pyx_v_ndim - __pyx_t_8) + 1); __pyx_temp++) {
@@ -17499,10 +17554,10 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
             PyList_SET_ITEM(__pyx_t_7, __pyx_temp, __pyx_slice__4);
           }
         }
-        __pyx_t_9 = __Pyx_PyList_Extend(__pyx_v_result, __pyx_t_7); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 677, __pyx_L1_error)
+        __pyx_t_9 = __Pyx_PyList_Extend(__pyx_v_result, __pyx_t_7); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 682, __pyx_L1_error)
         __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
 
-        /* "View.MemoryView":678
+        /* "View.MemoryView":683
  *             if not seen_ellipsis:
  *                 result.extend([slice(None)] * (ndim - len(tup) + 1))
  *                 seen_ellipsis = True             # <<<<<<<<<<<<<<
@@ -17511,7 +17566,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
  */
         __pyx_v_seen_ellipsis = 1;
 
-        /* "View.MemoryView":676
+        /* "View.MemoryView":681
  *     for idx, item in enumerate(tup):
  *         if item is Ellipsis:
  *             if not seen_ellipsis:             # <<<<<<<<<<<<<<
@@ -17521,7 +17576,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
         goto __pyx_L7;
       }
 
-      /* "View.MemoryView":680
+      /* "View.MemoryView":685
  *                 seen_ellipsis = True
  *             else:
  *                 result.append(slice(None))             # <<<<<<<<<<<<<<
@@ -17529,11 +17584,11 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
  *         else:
  */
       /*else*/ {
-        __pyx_t_9 = __Pyx_PyList_Append(__pyx_v_result, __pyx_slice__4); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 680, __pyx_L1_error)
+        __pyx_t_9 = __Pyx_PyList_Append(__pyx_v_result, __pyx_slice__4); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 685, __pyx_L1_error)
       }
       __pyx_L7:;
 
-      /* "View.MemoryView":681
+      /* "View.MemoryView":686
  *             else:
  *                 result.append(slice(None))
  *             have_slices = True             # <<<<<<<<<<<<<<
@@ -17542,7 +17597,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
  */
       __pyx_v_have_slices = 1;
 
-      /* "View.MemoryView":675
+      /* "View.MemoryView":680
  *     seen_ellipsis = False
  *     for idx, item in enumerate(tup):
  *         if item is Ellipsis:             # <<<<<<<<<<<<<<
@@ -17552,7 +17607,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
       goto __pyx_L6;
     }
 
-    /* "View.MemoryView":683
+    /* "View.MemoryView":688
  *             have_slices = True
  *         else:
  *             if not isinstance(item, slice) and not PyIndex_Check(item):             # <<<<<<<<<<<<<<
@@ -17572,23 +17627,23 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
       __pyx_L9_bool_binop_done:;
       if (unlikely(__pyx_t_1)) {
 
-        /* "View.MemoryView":684
+        /* "View.MemoryView":689
  *         else:
  *             if not isinstance(item, slice) and not PyIndex_Check(item):
  *                 raise TypeError("Cannot index with type '%s'" % type(item))             # <<<<<<<<<<<<<<
  * 
  *             have_slices = have_slices or isinstance(item, slice)
  */
-        __pyx_t_7 = __Pyx_PyString_FormatSafe(__pyx_kp_s_Cannot_index_with_type_s, ((PyObject *)Py_TYPE(__pyx_v_item))); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 684, __pyx_L1_error)
+        __pyx_t_7 = __Pyx_PyString_FormatSafe(__pyx_kp_s_Cannot_index_with_type_s, ((PyObject *)Py_TYPE(__pyx_v_item))); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 689, __pyx_L1_error)
         __Pyx_GOTREF(__pyx_t_7);
-        __pyx_t_11 = __Pyx_PyObject_CallOneArg(__pyx_builtin_TypeError, __pyx_t_7); if (unlikely(!__pyx_t_11)) __PYX_ERR(1, 684, __pyx_L1_error)
+        __pyx_t_11 = __Pyx_PyObject_CallOneArg(__pyx_builtin_TypeError, __pyx_t_7); if (unlikely(!__pyx_t_11)) __PYX_ERR(1, 689, __pyx_L1_error)
         __Pyx_GOTREF(__pyx_t_11);
         __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
         __Pyx_Raise(__pyx_t_11, 0, 0, 0);
         __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-        __PYX_ERR(1, 684, __pyx_L1_error)
+        __PYX_ERR(1, 689, __pyx_L1_error)
 
-        /* "View.MemoryView":683
+        /* "View.MemoryView":688
  *             have_slices = True
  *         else:
  *             if not isinstance(item, slice) and not PyIndex_Check(item):             # <<<<<<<<<<<<<<
@@ -17597,7 +17652,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
  */
       }
 
-      /* "View.MemoryView":686
+      /* "View.MemoryView":691
  *                 raise TypeError("Cannot index with type '%s'" % type(item))
  * 
  *             have_slices = have_slices or isinstance(item, slice)             # <<<<<<<<<<<<<<
@@ -17616,18 +17671,18 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
       __pyx_L11_bool_binop_done:;
       __pyx_v_have_slices = __pyx_t_1;
 
-      /* "View.MemoryView":687
+      /* "View.MemoryView":692
  * 
  *             have_slices = have_slices or isinstance(item, slice)
  *             result.append(item)             # <<<<<<<<<<<<<<
  * 
  *     nslices = ndim - len(result)
  */
-      __pyx_t_9 = __Pyx_PyList_Append(__pyx_v_result, __pyx_v_item); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 687, __pyx_L1_error)
+      __pyx_t_9 = __Pyx_PyList_Append(__pyx_v_result, __pyx_v_item); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 692, __pyx_L1_error)
     }
     __pyx_L6:;
 
-    /* "View.MemoryView":674
+    /* "View.MemoryView":679
  *     have_slices = False
  *     seen_ellipsis = False
  *     for idx, item in enumerate(tup):             # <<<<<<<<<<<<<<
@@ -17638,17 +17693,17 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "View.MemoryView":689
+  /* "View.MemoryView":694
  *             result.append(item)
  * 
  *     nslices = ndim - len(result)             # <<<<<<<<<<<<<<
  *     if nslices:
  *         result.extend([slice(None)] * nslices)
  */
-  __pyx_t_5 = PyList_GET_SIZE(__pyx_v_result); if (unlikely(__pyx_t_5 == ((Py_ssize_t)-1))) __PYX_ERR(1, 689, __pyx_L1_error)
+  __pyx_t_5 = PyList_GET_SIZE(__pyx_v_result); if (unlikely(__pyx_t_5 == ((Py_ssize_t)-1))) __PYX_ERR(1, 694, __pyx_L1_error)
   __pyx_v_nslices = (__pyx_v_ndim - __pyx_t_5);
 
-  /* "View.MemoryView":690
+  /* "View.MemoryView":695
  * 
  *     nslices = ndim - len(result)
  *     if nslices:             # <<<<<<<<<<<<<<
@@ -17658,14 +17713,14 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
   __pyx_t_1 = (__pyx_v_nslices != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":691
+    /* "View.MemoryView":696
  *     nslices = ndim - len(result)
  *     if nslices:
  *         result.extend([slice(None)] * nslices)             # <<<<<<<<<<<<<<
  * 
  *     return have_slices or nslices, tuple(result)
  */
-    __pyx_t_3 = PyList_New(1 * ((__pyx_v_nslices<0) ? 0:__pyx_v_nslices)); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 691, __pyx_L1_error)
+    __pyx_t_3 = PyList_New(1 * ((__pyx_v_nslices<0) ? 0:__pyx_v_nslices)); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 696, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
     { Py_ssize_t __pyx_temp;
       for (__pyx_temp=0; __pyx_temp < __pyx_v_nslices; __pyx_temp++) {
@@ -17674,10 +17729,10 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
         PyList_SET_ITEM(__pyx_t_3, __pyx_temp, __pyx_slice__4);
       }
     }
-    __pyx_t_9 = __Pyx_PyList_Extend(__pyx_v_result, __pyx_t_3); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 691, __pyx_L1_error)
+    __pyx_t_9 = __Pyx_PyList_Extend(__pyx_v_result, __pyx_t_3); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 696, __pyx_L1_error)
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-    /* "View.MemoryView":690
+    /* "View.MemoryView":695
  * 
  *     nslices = ndim - len(result)
  *     if nslices:             # <<<<<<<<<<<<<<
@@ -17686,7 +17741,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
  */
   }
 
-  /* "View.MemoryView":693
+  /* "View.MemoryView":698
  *         result.extend([slice(None)] * nslices)
  * 
  *     return have_slices or nslices, tuple(result)             # <<<<<<<<<<<<<<
@@ -17696,20 +17751,20 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
   __Pyx_XDECREF(__pyx_r);
   if (!__pyx_v_have_slices) {
   } else {
-    __pyx_t_4 = __Pyx_PyBool_FromLong(__pyx_v_have_slices); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 693, __pyx_L1_error)
+    __pyx_t_4 = __Pyx_PyBool_FromLong(__pyx_v_have_slices); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 698, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_4);
     __pyx_t_3 = __pyx_t_4;
     __pyx_t_4 = 0;
     goto __pyx_L14_bool_binop_done;
   }
-  __pyx_t_4 = PyInt_FromSsize_t(__pyx_v_nslices); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 693, __pyx_L1_error)
+  __pyx_t_4 = PyInt_FromSsize_t(__pyx_v_nslices); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 698, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_4);
   __pyx_t_3 = __pyx_t_4;
   __pyx_t_4 = 0;
   __pyx_L14_bool_binop_done:;
-  __pyx_t_4 = PyList_AsTuple(__pyx_v_result); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 693, __pyx_L1_error)
+  __pyx_t_4 = PyList_AsTuple(__pyx_v_result); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 698, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_11 = PyTuple_New(2); if (unlikely(!__pyx_t_11)) __PYX_ERR(1, 693, __pyx_L1_error)
+  __pyx_t_11 = PyTuple_New(2); if (unlikely(!__pyx_t_11)) __PYX_ERR(1, 698, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_11);
   __Pyx_GIVEREF(__pyx_t_3);
   PyTuple_SET_ITEM(__pyx_t_11, 0, __pyx_t_3);
@@ -17721,7 +17776,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
   __pyx_t_11 = 0;
   goto __pyx_L0;
 
-  /* "View.MemoryView":661
+  /* "View.MemoryView":666
  *     return isinstance(o, memoryview)
  * 
  * cdef tuple _unellipsify(object index, int ndim):             # <<<<<<<<<<<<<<
@@ -17747,7 +17802,7 @@ static PyObject *_unellipsify(PyObject *__pyx_v_index, int __pyx_v_ndim) {
   return __pyx_r;
 }
 
-/* "View.MemoryView":695
+/* "View.MemoryView":700
  *     return have_slices or nslices, tuple(result)
  * 
  * cdef assert_direct_dimensions(Py_ssize_t *suboffsets, int ndim):             # <<<<<<<<<<<<<<
@@ -17766,7 +17821,7 @@ static PyObject *assert_direct_dimensions(Py_ssize_t *__pyx_v_suboffsets, int __
   PyObject *__pyx_t_5 = NULL;
   __Pyx_RefNannySetupContext("assert_direct_dimensions", 0);
 
-  /* "View.MemoryView":696
+  /* "View.MemoryView":701
  * 
  * cdef assert_direct_dimensions(Py_ssize_t *suboffsets, int ndim):
  *     for suboffset in suboffsets[:ndim]:             # <<<<<<<<<<<<<<
@@ -17778,7 +17833,7 @@ static PyObject *assert_direct_dimensions(Py_ssize_t *__pyx_v_suboffsets, int __
     __pyx_t_1 = __pyx_t_3;
     __pyx_v_suboffset = (__pyx_t_1[0]);
 
-    /* "View.MemoryView":697
+    /* "View.MemoryView":702
  * cdef assert_direct_dimensions(Py_ssize_t *suboffsets, int ndim):
  *     for suboffset in suboffsets[:ndim]:
  *         if suboffset >= 0:             # <<<<<<<<<<<<<<
@@ -17788,20 +17843,20 @@ static PyObject *assert_direct_dimensions(Py_ssize_t *__pyx_v_suboffsets, int __
     __pyx_t_4 = ((__pyx_v_suboffset >= 0) != 0);
     if (unlikely(__pyx_t_4)) {
 
-      /* "View.MemoryView":698
+      /* "View.MemoryView":703
  *     for suboffset in suboffsets[:ndim]:
  *         if suboffset >= 0:
  *             raise ValueError("Indirect dimensions not supported")             # <<<<<<<<<<<<<<
  * 
  * 
  */
-      __pyx_t_5 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__26, NULL); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 698, __pyx_L1_error)
+      __pyx_t_5 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple__26, NULL); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 703, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_5);
       __Pyx_Raise(__pyx_t_5, 0, 0, 0);
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-      __PYX_ERR(1, 698, __pyx_L1_error)
+      __PYX_ERR(1, 703, __pyx_L1_error)
 
-      /* "View.MemoryView":697
+      /* "View.MemoryView":702
  * cdef assert_direct_dimensions(Py_ssize_t *suboffsets, int ndim):
  *     for suboffset in suboffsets[:ndim]:
  *         if suboffset >= 0:             # <<<<<<<<<<<<<<
@@ -17811,7 +17866,7 @@ static PyObject *assert_direct_dimensions(Py_ssize_t *__pyx_v_suboffsets, int __
     }
   }
 
-  /* "View.MemoryView":695
+  /* "View.MemoryView":700
  *     return have_slices or nslices, tuple(result)
  * 
  * cdef assert_direct_dimensions(Py_ssize_t *suboffsets, int ndim):             # <<<<<<<<<<<<<<
@@ -17832,7 +17887,7 @@ static PyObject *assert_direct_dimensions(Py_ssize_t *__pyx_v_suboffsets, int __
   return __pyx_r;
 }
 
-/* "View.MemoryView":705
+/* "View.MemoryView":710
  * 
  * @cname('__pyx_memview_slice')
  * cdef memoryview memview_slice(memoryview memview, object indices):             # <<<<<<<<<<<<<<
@@ -17873,7 +17928,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   Py_ssize_t __pyx_t_12;
   __Pyx_RefNannySetupContext("memview_slice", 0);
 
-  /* "View.MemoryView":706
+  /* "View.MemoryView":711
  * @cname('__pyx_memview_slice')
  * cdef memoryview memview_slice(memoryview memview, object indices):
  *     cdef int new_ndim = 0, suboffset_dim = -1, dim             # <<<<<<<<<<<<<<
@@ -17883,7 +17938,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   __pyx_v_new_ndim = 0;
   __pyx_v_suboffset_dim = -1;
 
-  /* "View.MemoryView":713
+  /* "View.MemoryView":718
  * 
  * 
  *     memset(&dst, 0, sizeof(dst))             # <<<<<<<<<<<<<<
@@ -17892,7 +17947,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
   (void)(memset((&__pyx_v_dst), 0, (sizeof(__pyx_v_dst))));
 
-  /* "View.MemoryView":717
+  /* "View.MemoryView":722
  *     cdef _memoryviewslice memviewsliceobj
  * 
  *     assert memview.view.ndim > 0             # <<<<<<<<<<<<<<
@@ -17903,12 +17958,12 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   if (unlikely(!Py_OptimizeFlag)) {
     if (unlikely(!((__pyx_v_memview->view.ndim > 0) != 0))) {
       PyErr_SetNone(PyExc_AssertionError);
-      __PYX_ERR(1, 717, __pyx_L1_error)
+      __PYX_ERR(1, 722, __pyx_L1_error)
     }
   }
   #endif
 
-  /* "View.MemoryView":719
+  /* "View.MemoryView":724
  *     assert memview.view.ndim > 0
  * 
  *     if isinstance(memview, _memoryviewslice):             # <<<<<<<<<<<<<<
@@ -17919,20 +17974,20 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   __pyx_t_2 = (__pyx_t_1 != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":720
+    /* "View.MemoryView":725
  * 
  *     if isinstance(memview, _memoryviewslice):
  *         memviewsliceobj = memview             # <<<<<<<<<<<<<<
  *         p_src = &memviewsliceobj.from_slice
  *     else:
  */
-    if (!(likely(((((PyObject *)__pyx_v_memview)) == Py_None) || likely(__Pyx_TypeTest(((PyObject *)__pyx_v_memview), __pyx_memoryviewslice_type))))) __PYX_ERR(1, 720, __pyx_L1_error)
+    if (!(likely(((((PyObject *)__pyx_v_memview)) == Py_None) || likely(__Pyx_TypeTest(((PyObject *)__pyx_v_memview), __pyx_memoryviewslice_type))))) __PYX_ERR(1, 725, __pyx_L1_error)
     __pyx_t_3 = ((PyObject *)__pyx_v_memview);
     __Pyx_INCREF(__pyx_t_3);
     __pyx_v_memviewsliceobj = ((struct __pyx_memoryviewslice_obj *)__pyx_t_3);
     __pyx_t_3 = 0;
 
-    /* "View.MemoryView":721
+    /* "View.MemoryView":726
  *     if isinstance(memview, _memoryviewslice):
  *         memviewsliceobj = memview
  *         p_src = &memviewsliceobj.from_slice             # <<<<<<<<<<<<<<
@@ -17941,7 +17996,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
     __pyx_v_p_src = (&__pyx_v_memviewsliceobj->from_slice);
 
-    /* "View.MemoryView":719
+    /* "View.MemoryView":724
  *     assert memview.view.ndim > 0
  * 
  *     if isinstance(memview, _memoryviewslice):             # <<<<<<<<<<<<<<
@@ -17951,7 +18006,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":723
+  /* "View.MemoryView":728
  *         p_src = &memviewsliceobj.from_slice
  *     else:
  *         slice_copy(memview, &src)             # <<<<<<<<<<<<<<
@@ -17961,7 +18016,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   /*else*/ {
     __pyx_memoryview_slice_copy(__pyx_v_memview, (&__pyx_v_src));
 
-    /* "View.MemoryView":724
+    /* "View.MemoryView":729
  *     else:
  *         slice_copy(memview, &src)
  *         p_src = &src             # <<<<<<<<<<<<<<
@@ -17972,7 +18027,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":730
+  /* "View.MemoryView":735
  * 
  * 
  *     dst.memview = p_src.memview             # <<<<<<<<<<<<<<
@@ -17982,7 +18037,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   __pyx_t_4 = __pyx_v_p_src->memview;
   __pyx_v_dst.memview = __pyx_t_4;
 
-  /* "View.MemoryView":731
+  /* "View.MemoryView":736
  * 
  *     dst.memview = p_src.memview
  *     dst.data = p_src.data             # <<<<<<<<<<<<<<
@@ -17992,7 +18047,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   __pyx_t_5 = __pyx_v_p_src->data;
   __pyx_v_dst.data = __pyx_t_5;
 
-  /* "View.MemoryView":736
+  /* "View.MemoryView":741
  * 
  * 
  *     cdef __Pyx_memviewslice *p_dst = &dst             # <<<<<<<<<<<<<<
@@ -18001,7 +18056,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
   __pyx_v_p_dst = (&__pyx_v_dst);
 
-  /* "View.MemoryView":737
+  /* "View.MemoryView":742
  * 
  *     cdef __Pyx_memviewslice *p_dst = &dst
  *     cdef int *p_suboffset_dim = &suboffset_dim             # <<<<<<<<<<<<<<
@@ -18010,7 +18065,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
   __pyx_v_p_suboffset_dim = (&__pyx_v_suboffset_dim);
 
-  /* "View.MemoryView":741
+  /* "View.MemoryView":746
  *     cdef bint have_start, have_stop, have_step
  * 
  *     for dim, index in enumerate(indices):             # <<<<<<<<<<<<<<
@@ -18022,26 +18077,26 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
     __pyx_t_3 = __pyx_v_indices; __Pyx_INCREF(__pyx_t_3); __pyx_t_7 = 0;
     __pyx_t_8 = NULL;
   } else {
-    __pyx_t_7 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_v_indices); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 741, __pyx_L1_error)
+    __pyx_t_7 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_v_indices); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 746, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_8 = Py_TYPE(__pyx_t_3)->tp_iternext; if (unlikely(!__pyx_t_8)) __PYX_ERR(1, 741, __pyx_L1_error)
+    __pyx_t_8 = Py_TYPE(__pyx_t_3)->tp_iternext; if (unlikely(!__pyx_t_8)) __PYX_ERR(1, 746, __pyx_L1_error)
   }
   for (;;) {
     if (likely(!__pyx_t_8)) {
       if (likely(PyList_CheckExact(__pyx_t_3))) {
         if (__pyx_t_7 >= PyList_GET_SIZE(__pyx_t_3)) break;
         #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
-        __pyx_t_9 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_7); __Pyx_INCREF(__pyx_t_9); __pyx_t_7++; if (unlikely(0 < 0)) __PYX_ERR(1, 741, __pyx_L1_error)
+        __pyx_t_9 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_7); __Pyx_INCREF(__pyx_t_9); __pyx_t_7++; if (unlikely(0 < 0)) __PYX_ERR(1, 746, __pyx_L1_error)
         #else
-        __pyx_t_9 = PySequence_ITEM(__pyx_t_3, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 741, __pyx_L1_error)
+        __pyx_t_9 = PySequence_ITEM(__pyx_t_3, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 746, __pyx_L1_error)
         __Pyx_GOTREF(__pyx_t_9);
         #endif
       } else {
         if (__pyx_t_7 >= PyTuple_GET_SIZE(__pyx_t_3)) break;
         #if CYTHON_ASSUME_SAFE_MACROS && !CYTHON_AVOID_BORROWED_REFS
-        __pyx_t_9 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_7); __Pyx_INCREF(__pyx_t_9); __pyx_t_7++; if (unlikely(0 < 0)) __PYX_ERR(1, 741, __pyx_L1_error)
+        __pyx_t_9 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_7); __Pyx_INCREF(__pyx_t_9); __pyx_t_7++; if (unlikely(0 < 0)) __PYX_ERR(1, 746, __pyx_L1_error)
         #else
-        __pyx_t_9 = PySequence_ITEM(__pyx_t_3, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 741, __pyx_L1_error)
+        __pyx_t_9 = PySequence_ITEM(__pyx_t_3, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 746, __pyx_L1_error)
         __Pyx_GOTREF(__pyx_t_9);
         #endif
       }
@@ -18051,7 +18106,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
         PyObject* exc_type = PyErr_Occurred();
         if (exc_type) {
           if (likely(__Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))) PyErr_Clear();
-          else __PYX_ERR(1, 741, __pyx_L1_error)
+          else __PYX_ERR(1, 746, __pyx_L1_error)
         }
         break;
       }
@@ -18062,7 +18117,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
     __pyx_v_dim = __pyx_t_6;
     __pyx_t_6 = (__pyx_t_6 + 1);
 
-    /* "View.MemoryView":742
+    /* "View.MemoryView":747
  * 
  *     for dim, index in enumerate(indices):
  *         if PyIndex_Check(index):             # <<<<<<<<<<<<<<
@@ -18072,25 +18127,25 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
     __pyx_t_2 = (PyIndex_Check(__pyx_v_index) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":746
+      /* "View.MemoryView":751
  *                 p_dst, p_src.shape[dim], p_src.strides[dim], p_src.suboffsets[dim],
  *                 dim, new_ndim, p_suboffset_dim,
  *                 index, 0, 0, # start, stop, step             # <<<<<<<<<<<<<<
  *                 0, 0, 0, # have_{start,stop,step}
  *                 False)
  */
-      __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_v_index); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 746, __pyx_L1_error)
+      __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_v_index); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 751, __pyx_L1_error)
 
-      /* "View.MemoryView":743
+      /* "View.MemoryView":748
  *     for dim, index in enumerate(indices):
  *         if PyIndex_Check(index):
  *             slice_memviewslice(             # <<<<<<<<<<<<<<
  *                 p_dst, p_src.shape[dim], p_src.strides[dim], p_src.suboffsets[dim],
  *                 dim, new_ndim, p_suboffset_dim,
  */
-      __pyx_t_11 = __pyx_memoryview_slice_memviewslice(__pyx_v_p_dst, (__pyx_v_p_src->shape[__pyx_v_dim]), (__pyx_v_p_src->strides[__pyx_v_dim]), (__pyx_v_p_src->suboffsets[__pyx_v_dim]), __pyx_v_dim, __pyx_v_new_ndim, __pyx_v_p_suboffset_dim, __pyx_t_10, 0, 0, 0, 0, 0, 0); if (unlikely(__pyx_t_11 == ((int)-1))) __PYX_ERR(1, 743, __pyx_L1_error)
+      __pyx_t_11 = __pyx_memoryview_slice_memviewslice(__pyx_v_p_dst, (__pyx_v_p_src->shape[__pyx_v_dim]), (__pyx_v_p_src->strides[__pyx_v_dim]), (__pyx_v_p_src->suboffsets[__pyx_v_dim]), __pyx_v_dim, __pyx_v_new_ndim, __pyx_v_p_suboffset_dim, __pyx_t_10, 0, 0, 0, 0, 0, 0); if (unlikely(__pyx_t_11 == ((int)-1))) __PYX_ERR(1, 748, __pyx_L1_error)
 
-      /* "View.MemoryView":742
+      /* "View.MemoryView":747
  * 
  *     for dim, index in enumerate(indices):
  *         if PyIndex_Check(index):             # <<<<<<<<<<<<<<
@@ -18100,7 +18155,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
       goto __pyx_L6;
     }
 
-    /* "View.MemoryView":749
+    /* "View.MemoryView":754
  *                 0, 0, 0, # have_{start,stop,step}
  *                 False)
  *         elif index is None:             # <<<<<<<<<<<<<<
@@ -18111,7 +18166,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
     __pyx_t_1 = (__pyx_t_2 != 0);
     if (__pyx_t_1) {
 
-      /* "View.MemoryView":750
+      /* "View.MemoryView":755
  *                 False)
  *         elif index is None:
  *             p_dst.shape[new_ndim] = 1             # <<<<<<<<<<<<<<
@@ -18120,7 +18175,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
       (__pyx_v_p_dst->shape[__pyx_v_new_ndim]) = 1;
 
-      /* "View.MemoryView":751
+      /* "View.MemoryView":756
  *         elif index is None:
  *             p_dst.shape[new_ndim] = 1
  *             p_dst.strides[new_ndim] = 0             # <<<<<<<<<<<<<<
@@ -18129,7 +18184,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
       (__pyx_v_p_dst->strides[__pyx_v_new_ndim]) = 0;
 
-      /* "View.MemoryView":752
+      /* "View.MemoryView":757
  *             p_dst.shape[new_ndim] = 1
  *             p_dst.strides[new_ndim] = 0
  *             p_dst.suboffsets[new_ndim] = -1             # <<<<<<<<<<<<<<
@@ -18138,7 +18193,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
       (__pyx_v_p_dst->suboffsets[__pyx_v_new_ndim]) = -1L;
 
-      /* "View.MemoryView":753
+      /* "View.MemoryView":758
  *             p_dst.strides[new_ndim] = 0
  *             p_dst.suboffsets[new_ndim] = -1
  *             new_ndim += 1             # <<<<<<<<<<<<<<
@@ -18147,7 +18202,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
       __pyx_v_new_ndim = (__pyx_v_new_ndim + 1);
 
-      /* "View.MemoryView":749
+      /* "View.MemoryView":754
  *                 0, 0, 0, # have_{start,stop,step}
  *                 False)
  *         elif index is None:             # <<<<<<<<<<<<<<
@@ -18157,7 +18212,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
       goto __pyx_L6;
     }
 
-    /* "View.MemoryView":755
+    /* "View.MemoryView":760
  *             new_ndim += 1
  *         else:
  *             start = index.start or 0             # <<<<<<<<<<<<<<
@@ -18165,13 +18220,13 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  *             step = index.step or 0
  */
     /*else*/ {
-      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_start); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 755, __pyx_L1_error)
+      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_start); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 760, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_9);
-      __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 755, __pyx_L1_error)
+      __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 760, __pyx_L1_error)
       if (!__pyx_t_1) {
         __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
       } else {
-        __pyx_t_12 = __Pyx_PyIndex_AsSsize_t(__pyx_t_9); if (unlikely((__pyx_t_12 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 755, __pyx_L1_error)
+        __pyx_t_12 = __Pyx_PyIndex_AsSsize_t(__pyx_t_9); if (unlikely((__pyx_t_12 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 760, __pyx_L1_error)
         __pyx_t_10 = __pyx_t_12;
         __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
         goto __pyx_L7_bool_binop_done;
@@ -18180,20 +18235,20 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
       __pyx_L7_bool_binop_done:;
       __pyx_v_start = __pyx_t_10;
 
-      /* "View.MemoryView":756
+      /* "View.MemoryView":761
  *         else:
  *             start = index.start or 0
  *             stop = index.stop or 0             # <<<<<<<<<<<<<<
  *             step = index.step or 0
  * 
  */
-      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_stop); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 756, __pyx_L1_error)
+      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_stop); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 761, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_9);
-      __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 756, __pyx_L1_error)
+      __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 761, __pyx_L1_error)
       if (!__pyx_t_1) {
         __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
       } else {
-        __pyx_t_12 = __Pyx_PyIndex_AsSsize_t(__pyx_t_9); if (unlikely((__pyx_t_12 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 756, __pyx_L1_error)
+        __pyx_t_12 = __Pyx_PyIndex_AsSsize_t(__pyx_t_9); if (unlikely((__pyx_t_12 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 761, __pyx_L1_error)
         __pyx_t_10 = __pyx_t_12;
         __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
         goto __pyx_L9_bool_binop_done;
@@ -18202,20 +18257,20 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
       __pyx_L9_bool_binop_done:;
       __pyx_v_stop = __pyx_t_10;
 
-      /* "View.MemoryView":757
+      /* "View.MemoryView":762
  *             start = index.start or 0
  *             stop = index.stop or 0
  *             step = index.step or 0             # <<<<<<<<<<<<<<
  * 
  *             have_start = index.start is not None
  */
-      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_step); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 757, __pyx_L1_error)
+      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_step); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 762, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_9);
-      __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 757, __pyx_L1_error)
+      __pyx_t_1 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_1 < 0)) __PYX_ERR(1, 762, __pyx_L1_error)
       if (!__pyx_t_1) {
         __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
       } else {
-        __pyx_t_12 = __Pyx_PyIndex_AsSsize_t(__pyx_t_9); if (unlikely((__pyx_t_12 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 757, __pyx_L1_error)
+        __pyx_t_12 = __Pyx_PyIndex_AsSsize_t(__pyx_t_9); if (unlikely((__pyx_t_12 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 762, __pyx_L1_error)
         __pyx_t_10 = __pyx_t_12;
         __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
         goto __pyx_L11_bool_binop_done;
@@ -18224,55 +18279,55 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
       __pyx_L11_bool_binop_done:;
       __pyx_v_step = __pyx_t_10;
 
-      /* "View.MemoryView":759
+      /* "View.MemoryView":764
  *             step = index.step or 0
  * 
  *             have_start = index.start is not None             # <<<<<<<<<<<<<<
  *             have_stop = index.stop is not None
  *             have_step = index.step is not None
  */
-      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_start); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 759, __pyx_L1_error)
+      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_start); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 764, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_9);
       __pyx_t_1 = (__pyx_t_9 != Py_None);
       __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
       __pyx_v_have_start = __pyx_t_1;
 
-      /* "View.MemoryView":760
+      /* "View.MemoryView":765
  * 
  *             have_start = index.start is not None
  *             have_stop = index.stop is not None             # <<<<<<<<<<<<<<
  *             have_step = index.step is not None
  * 
  */
-      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_stop); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 760, __pyx_L1_error)
+      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_stop); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 765, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_9);
       __pyx_t_1 = (__pyx_t_9 != Py_None);
       __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
       __pyx_v_have_stop = __pyx_t_1;
 
-      /* "View.MemoryView":761
+      /* "View.MemoryView":766
  *             have_start = index.start is not None
  *             have_stop = index.stop is not None
  *             have_step = index.step is not None             # <<<<<<<<<<<<<<
  * 
  *             slice_memviewslice(
  */
-      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_step); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 761, __pyx_L1_error)
+      __pyx_t_9 = __Pyx_PyObject_GetAttrStr(__pyx_v_index, __pyx_n_s_step); if (unlikely(!__pyx_t_9)) __PYX_ERR(1, 766, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_9);
       __pyx_t_1 = (__pyx_t_9 != Py_None);
       __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
       __pyx_v_have_step = __pyx_t_1;
 
-      /* "View.MemoryView":763
+      /* "View.MemoryView":768
  *             have_step = index.step is not None
  * 
  *             slice_memviewslice(             # <<<<<<<<<<<<<<
  *                 p_dst, p_src.shape[dim], p_src.strides[dim], p_src.suboffsets[dim],
  *                 dim, new_ndim, p_suboffset_dim,
  */
-      __pyx_t_11 = __pyx_memoryview_slice_memviewslice(__pyx_v_p_dst, (__pyx_v_p_src->shape[__pyx_v_dim]), (__pyx_v_p_src->strides[__pyx_v_dim]), (__pyx_v_p_src->suboffsets[__pyx_v_dim]), __pyx_v_dim, __pyx_v_new_ndim, __pyx_v_p_suboffset_dim, __pyx_v_start, __pyx_v_stop, __pyx_v_step, __pyx_v_have_start, __pyx_v_have_stop, __pyx_v_have_step, 1); if (unlikely(__pyx_t_11 == ((int)-1))) __PYX_ERR(1, 763, __pyx_L1_error)
+      __pyx_t_11 = __pyx_memoryview_slice_memviewslice(__pyx_v_p_dst, (__pyx_v_p_src->shape[__pyx_v_dim]), (__pyx_v_p_src->strides[__pyx_v_dim]), (__pyx_v_p_src->suboffsets[__pyx_v_dim]), __pyx_v_dim, __pyx_v_new_ndim, __pyx_v_p_suboffset_dim, __pyx_v_start, __pyx_v_stop, __pyx_v_step, __pyx_v_have_start, __pyx_v_have_stop, __pyx_v_have_step, 1); if (unlikely(__pyx_t_11 == ((int)-1))) __PYX_ERR(1, 768, __pyx_L1_error)
 
-      /* "View.MemoryView":769
+      /* "View.MemoryView":774
  *                 have_start, have_stop, have_step,
  *                 True)
  *             new_ndim += 1             # <<<<<<<<<<<<<<
@@ -18283,7 +18338,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
     }
     __pyx_L6:;
 
-    /* "View.MemoryView":741
+    /* "View.MemoryView":746
  *     cdef bint have_start, have_stop, have_step
  * 
  *     for dim, index in enumerate(indices):             # <<<<<<<<<<<<<<
@@ -18293,7 +18348,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   }
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "View.MemoryView":771
+  /* "View.MemoryView":776
  *             new_ndim += 1
  * 
  *     if isinstance(memview, _memoryviewslice):             # <<<<<<<<<<<<<<
@@ -18304,7 +18359,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   __pyx_t_2 = (__pyx_t_1 != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":772
+    /* "View.MemoryView":777
  * 
  *     if isinstance(memview, _memoryviewslice):
  *         return memoryview_fromslice(dst, new_ndim,             # <<<<<<<<<<<<<<
@@ -18313,39 +18368,39 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
     __Pyx_XDECREF(((PyObject *)__pyx_r));
 
-    /* "View.MemoryView":773
+    /* "View.MemoryView":778
  *     if isinstance(memview, _memoryviewslice):
  *         return memoryview_fromslice(dst, new_ndim,
  *                                     memviewsliceobj.to_object_func,             # <<<<<<<<<<<<<<
  *                                     memviewsliceobj.to_dtype_func,
  *                                     memview.dtype_is_object)
  */
-    if (unlikely(!__pyx_v_memviewsliceobj)) { __Pyx_RaiseUnboundLocalError("memviewsliceobj"); __PYX_ERR(1, 773, __pyx_L1_error) }
+    if (unlikely(!__pyx_v_memviewsliceobj)) { __Pyx_RaiseUnboundLocalError("memviewsliceobj"); __PYX_ERR(1, 778, __pyx_L1_error) }
 
-    /* "View.MemoryView":774
+    /* "View.MemoryView":779
  *         return memoryview_fromslice(dst, new_ndim,
  *                                     memviewsliceobj.to_object_func,
  *                                     memviewsliceobj.to_dtype_func,             # <<<<<<<<<<<<<<
  *                                     memview.dtype_is_object)
  *     else:
  */
-    if (unlikely(!__pyx_v_memviewsliceobj)) { __Pyx_RaiseUnboundLocalError("memviewsliceobj"); __PYX_ERR(1, 774, __pyx_L1_error) }
+    if (unlikely(!__pyx_v_memviewsliceobj)) { __Pyx_RaiseUnboundLocalError("memviewsliceobj"); __PYX_ERR(1, 779, __pyx_L1_error) }
 
-    /* "View.MemoryView":772
+    /* "View.MemoryView":777
  * 
  *     if isinstance(memview, _memoryviewslice):
  *         return memoryview_fromslice(dst, new_ndim,             # <<<<<<<<<<<<<<
  *                                     memviewsliceobj.to_object_func,
  *                                     memviewsliceobj.to_dtype_func,
  */
-    __pyx_t_3 = __pyx_memoryview_fromslice(__pyx_v_dst, __pyx_v_new_ndim, __pyx_v_memviewsliceobj->to_object_func, __pyx_v_memviewsliceobj->to_dtype_func, __pyx_v_memview->dtype_is_object); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 772, __pyx_L1_error)
+    __pyx_t_3 = __pyx_memoryview_fromslice(__pyx_v_dst, __pyx_v_new_ndim, __pyx_v_memviewsliceobj->to_object_func, __pyx_v_memviewsliceobj->to_dtype_func, __pyx_v_memview->dtype_is_object); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 777, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
-    if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_memoryview_type))))) __PYX_ERR(1, 772, __pyx_L1_error)
+    if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_memoryview_type))))) __PYX_ERR(1, 777, __pyx_L1_error)
     __pyx_r = ((struct __pyx_memoryview_obj *)__pyx_t_3);
     __pyx_t_3 = 0;
     goto __pyx_L0;
 
-    /* "View.MemoryView":771
+    /* "View.MemoryView":776
  *             new_ndim += 1
  * 
  *     if isinstance(memview, _memoryviewslice):             # <<<<<<<<<<<<<<
@@ -18354,7 +18409,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
  */
   }
 
-  /* "View.MemoryView":777
+  /* "View.MemoryView":782
  *                                     memview.dtype_is_object)
  *     else:
  *         return memoryview_fromslice(dst, new_ndim, NULL, NULL,             # <<<<<<<<<<<<<<
@@ -18364,30 +18419,30 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   /*else*/ {
     __Pyx_XDECREF(((PyObject *)__pyx_r));
 
-    /* "View.MemoryView":778
+    /* "View.MemoryView":783
  *     else:
  *         return memoryview_fromslice(dst, new_ndim, NULL, NULL,
  *                                     memview.dtype_is_object)             # <<<<<<<<<<<<<<
  * 
  * 
  */
-    __pyx_t_3 = __pyx_memoryview_fromslice(__pyx_v_dst, __pyx_v_new_ndim, NULL, NULL, __pyx_v_memview->dtype_is_object); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 777, __pyx_L1_error)
+    __pyx_t_3 = __pyx_memoryview_fromslice(__pyx_v_dst, __pyx_v_new_ndim, NULL, NULL, __pyx_v_memview->dtype_is_object); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 782, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
 
-    /* "View.MemoryView":777
+    /* "View.MemoryView":782
  *                                     memview.dtype_is_object)
  *     else:
  *         return memoryview_fromslice(dst, new_ndim, NULL, NULL,             # <<<<<<<<<<<<<<
  *                                     memview.dtype_is_object)
  * 
  */
-    if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_memoryview_type))))) __PYX_ERR(1, 777, __pyx_L1_error)
+    if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_memoryview_type))))) __PYX_ERR(1, 782, __pyx_L1_error)
     __pyx_r = ((struct __pyx_memoryview_obj *)__pyx_t_3);
     __pyx_t_3 = 0;
     goto __pyx_L0;
   }
 
-  /* "View.MemoryView":705
+  /* "View.MemoryView":710
  * 
  * @cname('__pyx_memview_slice')
  * cdef memoryview memview_slice(memoryview memview, object indices):             # <<<<<<<<<<<<<<
@@ -18409,7 +18464,7 @@ static struct __pyx_memoryview_obj *__pyx_memview_slice(struct __pyx_memoryview_
   return __pyx_r;
 }
 
-/* "View.MemoryView":802
+/* "View.MemoryView":807
  * 
  * @cname('__pyx_memoryview_slice_memviewslice')
  * cdef int slice_memviewslice(             # <<<<<<<<<<<<<<
@@ -18425,7 +18480,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
   int __pyx_t_2;
   int __pyx_t_3;
 
-  /* "View.MemoryView":822
+  /* "View.MemoryView":827
  *     cdef bint negative_step
  * 
  *     if not is_slice:             # <<<<<<<<<<<<<<
@@ -18435,7 +18490,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
   __pyx_t_1 = ((!(__pyx_v_is_slice != 0)) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":824
+    /* "View.MemoryView":829
  *     if not is_slice:
  * 
  *         if start < 0:             # <<<<<<<<<<<<<<
@@ -18445,7 +18500,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_t_1 = ((__pyx_v_start < 0) != 0);
     if (__pyx_t_1) {
 
-      /* "View.MemoryView":825
+      /* "View.MemoryView":830
  * 
  *         if start < 0:
  *             start += shape             # <<<<<<<<<<<<<<
@@ -18454,7 +18509,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
       __pyx_v_start = (__pyx_v_start + __pyx_v_shape);
 
-      /* "View.MemoryView":824
+      /* "View.MemoryView":829
  *     if not is_slice:
  * 
  *         if start < 0:             # <<<<<<<<<<<<<<
@@ -18463,7 +18518,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     }
 
-    /* "View.MemoryView":826
+    /* "View.MemoryView":831
  *         if start < 0:
  *             start += shape
  *         if not 0 <= start < shape:             # <<<<<<<<<<<<<<
@@ -18477,16 +18532,16 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_t_2 = ((!(__pyx_t_1 != 0)) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":827
+      /* "View.MemoryView":832
  *             start += shape
  *         if not 0 <= start < shape:
  *             _err_dim(IndexError, "Index out of bounds (axis %d)", dim)             # <<<<<<<<<<<<<<
  *     else:
  * 
  */
-      __pyx_t_3 = __pyx_memoryview_err_dim(__pyx_builtin_IndexError, ((char *)"Index out of bounds (axis %d)"), __pyx_v_dim); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(1, 827, __pyx_L1_error)
+      __pyx_t_3 = __pyx_memoryview_err_dim(__pyx_builtin_IndexError, ((char *)"Index out of bounds (axis %d)"), __pyx_v_dim); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(1, 832, __pyx_L1_error)
 
-      /* "View.MemoryView":826
+      /* "View.MemoryView":831
  *         if start < 0:
  *             start += shape
  *         if not 0 <= start < shape:             # <<<<<<<<<<<<<<
@@ -18495,7 +18550,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     }
 
-    /* "View.MemoryView":822
+    /* "View.MemoryView":827
  *     cdef bint negative_step
  * 
  *     if not is_slice:             # <<<<<<<<<<<<<<
@@ -18505,7 +18560,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":830
+  /* "View.MemoryView":835
  *     else:
  * 
  *         negative_step = have_step != 0 and step < 0             # <<<<<<<<<<<<<<
@@ -18524,7 +18579,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_L6_bool_binop_done:;
     __pyx_v_negative_step = __pyx_t_2;
 
-    /* "View.MemoryView":832
+    /* "View.MemoryView":837
  *         negative_step = have_step != 0 and step < 0
  * 
  *         if have_step and step == 0:             # <<<<<<<<<<<<<<
@@ -18542,16 +18597,16 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_L9_bool_binop_done:;
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":833
+      /* "View.MemoryView":838
  * 
  *         if have_step and step == 0:
  *             _err_dim(ValueError, "Step may not be zero (axis %d)", dim)             # <<<<<<<<<<<<<<
  * 
  * 
  */
-      __pyx_t_3 = __pyx_memoryview_err_dim(__pyx_builtin_ValueError, ((char *)"Step may not be zero (axis %d)"), __pyx_v_dim); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(1, 833, __pyx_L1_error)
+      __pyx_t_3 = __pyx_memoryview_err_dim(__pyx_builtin_ValueError, ((char *)"Step may not be zero (axis %d)"), __pyx_v_dim); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(1, 838, __pyx_L1_error)
 
-      /* "View.MemoryView":832
+      /* "View.MemoryView":837
  *         negative_step = have_step != 0 and step < 0
  * 
  *         if have_step and step == 0:             # <<<<<<<<<<<<<<
@@ -18560,7 +18615,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     }
 
-    /* "View.MemoryView":836
+    /* "View.MemoryView":841
  * 
  * 
  *         if have_start:             # <<<<<<<<<<<<<<
@@ -18570,7 +18625,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_t_2 = (__pyx_v_have_start != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":837
+      /* "View.MemoryView":842
  * 
  *         if have_start:
  *             if start < 0:             # <<<<<<<<<<<<<<
@@ -18580,7 +18635,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       __pyx_t_2 = ((__pyx_v_start < 0) != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":838
+        /* "View.MemoryView":843
  *         if have_start:
  *             if start < 0:
  *                 start += shape             # <<<<<<<<<<<<<<
@@ -18589,7 +18644,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
         __pyx_v_start = (__pyx_v_start + __pyx_v_shape);
 
-        /* "View.MemoryView":839
+        /* "View.MemoryView":844
  *             if start < 0:
  *                 start += shape
  *                 if start < 0:             # <<<<<<<<<<<<<<
@@ -18599,7 +18654,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         __pyx_t_2 = ((__pyx_v_start < 0) != 0);
         if (__pyx_t_2) {
 
-          /* "View.MemoryView":840
+          /* "View.MemoryView":845
  *                 start += shape
  *                 if start < 0:
  *                     start = 0             # <<<<<<<<<<<<<<
@@ -18608,7 +18663,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
           __pyx_v_start = 0;
 
-          /* "View.MemoryView":839
+          /* "View.MemoryView":844
  *             if start < 0:
  *                 start += shape
  *                 if start < 0:             # <<<<<<<<<<<<<<
@@ -18617,7 +18672,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
         }
 
-        /* "View.MemoryView":837
+        /* "View.MemoryView":842
  * 
  *         if have_start:
  *             if start < 0:             # <<<<<<<<<<<<<<
@@ -18627,7 +18682,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         goto __pyx_L12;
       }
 
-      /* "View.MemoryView":841
+      /* "View.MemoryView":846
  *                 if start < 0:
  *                     start = 0
  *             elif start >= shape:             # <<<<<<<<<<<<<<
@@ -18637,7 +18692,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       __pyx_t_2 = ((__pyx_v_start >= __pyx_v_shape) != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":842
+        /* "View.MemoryView":847
  *                     start = 0
  *             elif start >= shape:
  *                 if negative_step:             # <<<<<<<<<<<<<<
@@ -18647,7 +18702,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         __pyx_t_2 = (__pyx_v_negative_step != 0);
         if (__pyx_t_2) {
 
-          /* "View.MemoryView":843
+          /* "View.MemoryView":848
  *             elif start >= shape:
  *                 if negative_step:
  *                     start = shape - 1             # <<<<<<<<<<<<<<
@@ -18656,7 +18711,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
           __pyx_v_start = (__pyx_v_shape - 1);
 
-          /* "View.MemoryView":842
+          /* "View.MemoryView":847
  *                     start = 0
  *             elif start >= shape:
  *                 if negative_step:             # <<<<<<<<<<<<<<
@@ -18666,7 +18721,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
           goto __pyx_L14;
         }
 
-        /* "View.MemoryView":845
+        /* "View.MemoryView":850
  *                     start = shape - 1
  *                 else:
  *                     start = shape             # <<<<<<<<<<<<<<
@@ -18678,7 +18733,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         }
         __pyx_L14:;
 
-        /* "View.MemoryView":841
+        /* "View.MemoryView":846
  *                 if start < 0:
  *                     start = 0
  *             elif start >= shape:             # <<<<<<<<<<<<<<
@@ -18688,7 +18743,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       }
       __pyx_L12:;
 
-      /* "View.MemoryView":836
+      /* "View.MemoryView":841
  * 
  * 
  *         if have_start:             # <<<<<<<<<<<<<<
@@ -18698,7 +18753,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       goto __pyx_L11;
     }
 
-    /* "View.MemoryView":847
+    /* "View.MemoryView":852
  *                     start = shape
  *         else:
  *             if negative_step:             # <<<<<<<<<<<<<<
@@ -18709,7 +18764,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       __pyx_t_2 = (__pyx_v_negative_step != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":848
+        /* "View.MemoryView":853
  *         else:
  *             if negative_step:
  *                 start = shape - 1             # <<<<<<<<<<<<<<
@@ -18718,7 +18773,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
         __pyx_v_start = (__pyx_v_shape - 1);
 
-        /* "View.MemoryView":847
+        /* "View.MemoryView":852
  *                     start = shape
  *         else:
  *             if negative_step:             # <<<<<<<<<<<<<<
@@ -18728,7 +18783,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         goto __pyx_L15;
       }
 
-      /* "View.MemoryView":850
+      /* "View.MemoryView":855
  *                 start = shape - 1
  *             else:
  *                 start = 0             # <<<<<<<<<<<<<<
@@ -18742,7 +18797,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     }
     __pyx_L11:;
 
-    /* "View.MemoryView":852
+    /* "View.MemoryView":857
  *                 start = 0
  * 
  *         if have_stop:             # <<<<<<<<<<<<<<
@@ -18752,7 +18807,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_t_2 = (__pyx_v_have_stop != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":853
+      /* "View.MemoryView":858
  * 
  *         if have_stop:
  *             if stop < 0:             # <<<<<<<<<<<<<<
@@ -18762,7 +18817,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       __pyx_t_2 = ((__pyx_v_stop < 0) != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":854
+        /* "View.MemoryView":859
  *         if have_stop:
  *             if stop < 0:
  *                 stop += shape             # <<<<<<<<<<<<<<
@@ -18771,7 +18826,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
         __pyx_v_stop = (__pyx_v_stop + __pyx_v_shape);
 
-        /* "View.MemoryView":855
+        /* "View.MemoryView":860
  *             if stop < 0:
  *                 stop += shape
  *                 if stop < 0:             # <<<<<<<<<<<<<<
@@ -18781,7 +18836,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         __pyx_t_2 = ((__pyx_v_stop < 0) != 0);
         if (__pyx_t_2) {
 
-          /* "View.MemoryView":856
+          /* "View.MemoryView":861
  *                 stop += shape
  *                 if stop < 0:
  *                     stop = 0             # <<<<<<<<<<<<<<
@@ -18790,7 +18845,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
           __pyx_v_stop = 0;
 
-          /* "View.MemoryView":855
+          /* "View.MemoryView":860
  *             if stop < 0:
  *                 stop += shape
  *                 if stop < 0:             # <<<<<<<<<<<<<<
@@ -18799,7 +18854,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
         }
 
-        /* "View.MemoryView":853
+        /* "View.MemoryView":858
  * 
  *         if have_stop:
  *             if stop < 0:             # <<<<<<<<<<<<<<
@@ -18809,7 +18864,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         goto __pyx_L17;
       }
 
-      /* "View.MemoryView":857
+      /* "View.MemoryView":862
  *                 if stop < 0:
  *                     stop = 0
  *             elif stop > shape:             # <<<<<<<<<<<<<<
@@ -18819,7 +18874,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       __pyx_t_2 = ((__pyx_v_stop > __pyx_v_shape) != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":858
+        /* "View.MemoryView":863
  *                     stop = 0
  *             elif stop > shape:
  *                 stop = shape             # <<<<<<<<<<<<<<
@@ -18828,7 +18883,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
         __pyx_v_stop = __pyx_v_shape;
 
-        /* "View.MemoryView":857
+        /* "View.MemoryView":862
  *                 if stop < 0:
  *                     stop = 0
  *             elif stop > shape:             # <<<<<<<<<<<<<<
@@ -18838,7 +18893,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       }
       __pyx_L17:;
 
-      /* "View.MemoryView":852
+      /* "View.MemoryView":857
  *                 start = 0
  * 
  *         if have_stop:             # <<<<<<<<<<<<<<
@@ -18848,7 +18903,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       goto __pyx_L16;
     }
 
-    /* "View.MemoryView":860
+    /* "View.MemoryView":865
  *                 stop = shape
  *         else:
  *             if negative_step:             # <<<<<<<<<<<<<<
@@ -18859,7 +18914,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       __pyx_t_2 = (__pyx_v_negative_step != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":861
+        /* "View.MemoryView":866
  *         else:
  *             if negative_step:
  *                 stop = -1             # <<<<<<<<<<<<<<
@@ -18868,7 +18923,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
         __pyx_v_stop = -1L;
 
-        /* "View.MemoryView":860
+        /* "View.MemoryView":865
  *                 stop = shape
  *         else:
  *             if negative_step:             # <<<<<<<<<<<<<<
@@ -18878,7 +18933,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         goto __pyx_L19;
       }
 
-      /* "View.MemoryView":863
+      /* "View.MemoryView":868
  *                 stop = -1
  *             else:
  *                 stop = shape             # <<<<<<<<<<<<<<
@@ -18892,7 +18947,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     }
     __pyx_L16:;
 
-    /* "View.MemoryView":865
+    /* "View.MemoryView":870
  *                 stop = shape
  * 
  *         if not have_step:             # <<<<<<<<<<<<<<
@@ -18902,7 +18957,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_t_2 = ((!(__pyx_v_have_step != 0)) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":866
+      /* "View.MemoryView":871
  * 
  *         if not have_step:
  *             step = 1             # <<<<<<<<<<<<<<
@@ -18911,7 +18966,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
       __pyx_v_step = 1;
 
-      /* "View.MemoryView":865
+      /* "View.MemoryView":870
  *                 stop = shape
  * 
  *         if not have_step:             # <<<<<<<<<<<<<<
@@ -18920,7 +18975,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     }
 
-    /* "View.MemoryView":870
+    /* "View.MemoryView":875
  * 
  *         with cython.cdivision(True):
  *             new_shape = (stop - start) // step             # <<<<<<<<<<<<<<
@@ -18929,7 +18984,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     __pyx_v_new_shape = ((__pyx_v_stop - __pyx_v_start) / __pyx_v_step);
 
-    /* "View.MemoryView":872
+    /* "View.MemoryView":877
  *             new_shape = (stop - start) // step
  * 
  *             if (stop - start) - step * new_shape:             # <<<<<<<<<<<<<<
@@ -18939,7 +18994,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_t_2 = (((__pyx_v_stop - __pyx_v_start) - (__pyx_v_step * __pyx_v_new_shape)) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":873
+      /* "View.MemoryView":878
  * 
  *             if (stop - start) - step * new_shape:
  *                 new_shape += 1             # <<<<<<<<<<<<<<
@@ -18948,7 +19003,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
       __pyx_v_new_shape = (__pyx_v_new_shape + 1);
 
-      /* "View.MemoryView":872
+      /* "View.MemoryView":877
  *             new_shape = (stop - start) // step
  * 
  *             if (stop - start) - step * new_shape:             # <<<<<<<<<<<<<<
@@ -18957,7 +19012,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     }
 
-    /* "View.MemoryView":875
+    /* "View.MemoryView":880
  *                 new_shape += 1
  * 
  *         if new_shape < 0:             # <<<<<<<<<<<<<<
@@ -18967,7 +19022,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_t_2 = ((__pyx_v_new_shape < 0) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":876
+      /* "View.MemoryView":881
  * 
  *         if new_shape < 0:
  *             new_shape = 0             # <<<<<<<<<<<<<<
@@ -18976,7 +19031,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
       __pyx_v_new_shape = 0;
 
-      /* "View.MemoryView":875
+      /* "View.MemoryView":880
  *                 new_shape += 1
  * 
  *         if new_shape < 0:             # <<<<<<<<<<<<<<
@@ -18985,7 +19040,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     }
 
-    /* "View.MemoryView":879
+    /* "View.MemoryView":884
  * 
  * 
  *         dst.strides[new_ndim] = stride * step             # <<<<<<<<<<<<<<
@@ -18994,7 +19049,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     (__pyx_v_dst->strides[__pyx_v_new_ndim]) = (__pyx_v_stride * __pyx_v_step);
 
-    /* "View.MemoryView":880
+    /* "View.MemoryView":885
  * 
  *         dst.strides[new_ndim] = stride * step
  *         dst.shape[new_ndim] = new_shape             # <<<<<<<<<<<<<<
@@ -19003,7 +19058,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     (__pyx_v_dst->shape[__pyx_v_new_ndim]) = __pyx_v_new_shape;
 
-    /* "View.MemoryView":881
+    /* "View.MemoryView":886
  *         dst.strides[new_ndim] = stride * step
  *         dst.shape[new_ndim] = new_shape
  *         dst.suboffsets[new_ndim] = suboffset             # <<<<<<<<<<<<<<
@@ -19014,7 +19069,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":884
+  /* "View.MemoryView":889
  * 
  * 
  *     if suboffset_dim[0] < 0:             # <<<<<<<<<<<<<<
@@ -19024,7 +19079,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
   __pyx_t_2 = (((__pyx_v_suboffset_dim[0]) < 0) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":885
+    /* "View.MemoryView":890
  * 
  *     if suboffset_dim[0] < 0:
  *         dst.data += start * stride             # <<<<<<<<<<<<<<
@@ -19033,7 +19088,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
     __pyx_v_dst->data = (__pyx_v_dst->data + (__pyx_v_start * __pyx_v_stride));
 
-    /* "View.MemoryView":884
+    /* "View.MemoryView":889
  * 
  * 
  *     if suboffset_dim[0] < 0:             # <<<<<<<<<<<<<<
@@ -19043,7 +19098,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     goto __pyx_L23;
   }
 
-  /* "View.MemoryView":887
+  /* "View.MemoryView":892
  *         dst.data += start * stride
  *     else:
  *         dst.suboffsets[suboffset_dim[0]] += start * stride             # <<<<<<<<<<<<<<
@@ -19056,7 +19111,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
   }
   __pyx_L23:;
 
-  /* "View.MemoryView":889
+  /* "View.MemoryView":894
  *         dst.suboffsets[suboffset_dim[0]] += start * stride
  * 
  *     if suboffset >= 0:             # <<<<<<<<<<<<<<
@@ -19066,7 +19121,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
   __pyx_t_2 = ((__pyx_v_suboffset >= 0) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":890
+    /* "View.MemoryView":895
  * 
  *     if suboffset >= 0:
  *         if not is_slice:             # <<<<<<<<<<<<<<
@@ -19076,7 +19131,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     __pyx_t_2 = ((!(__pyx_v_is_slice != 0)) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":891
+      /* "View.MemoryView":896
  *     if suboffset >= 0:
  *         if not is_slice:
  *             if new_ndim == 0:             # <<<<<<<<<<<<<<
@@ -19086,7 +19141,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       __pyx_t_2 = ((__pyx_v_new_ndim == 0) != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":892
+        /* "View.MemoryView":897
  *         if not is_slice:
  *             if new_ndim == 0:
  *                 dst.data = (<char **> dst.data)[0] + suboffset             # <<<<<<<<<<<<<<
@@ -19095,7 +19150,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
         __pyx_v_dst->data = ((((char **)__pyx_v_dst->data)[0]) + __pyx_v_suboffset);
 
-        /* "View.MemoryView":891
+        /* "View.MemoryView":896
  *     if suboffset >= 0:
  *         if not is_slice:
  *             if new_ndim == 0:             # <<<<<<<<<<<<<<
@@ -19105,7 +19160,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
         goto __pyx_L26;
       }
 
-      /* "View.MemoryView":894
+      /* "View.MemoryView":899
  *                 dst.data = (<char **> dst.data)[0] + suboffset
  *             else:
  *                 _err_dim(IndexError, "All dimensions preceding dimension %d "             # <<<<<<<<<<<<<<
@@ -19114,18 +19169,18 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
       /*else*/ {
 
-        /* "View.MemoryView":895
+        /* "View.MemoryView":900
  *             else:
  *                 _err_dim(IndexError, "All dimensions preceding dimension %d "
  *                                      "must be indexed and not sliced", dim)             # <<<<<<<<<<<<<<
  *         else:
  *             suboffset_dim[0] = new_ndim
  */
-        __pyx_t_3 = __pyx_memoryview_err_dim(__pyx_builtin_IndexError, ((char *)"All dimensions preceding dimension %d must be indexed and not sliced"), __pyx_v_dim); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(1, 894, __pyx_L1_error)
+        __pyx_t_3 = __pyx_memoryview_err_dim(__pyx_builtin_IndexError, ((char *)"All dimensions preceding dimension %d must be indexed and not sliced"), __pyx_v_dim); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(1, 899, __pyx_L1_error)
       }
       __pyx_L26:;
 
-      /* "View.MemoryView":890
+      /* "View.MemoryView":895
  * 
  *     if suboffset >= 0:
  *         if not is_slice:             # <<<<<<<<<<<<<<
@@ -19135,7 +19190,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
       goto __pyx_L25;
     }
 
-    /* "View.MemoryView":897
+    /* "View.MemoryView":902
  *                                      "must be indexed and not sliced", dim)
  *         else:
  *             suboffset_dim[0] = new_ndim             # <<<<<<<<<<<<<<
@@ -19147,7 +19202,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
     }
     __pyx_L25:;
 
-    /* "View.MemoryView":889
+    /* "View.MemoryView":894
  *         dst.suboffsets[suboffset_dim[0]] += start * stride
  * 
  *     if suboffset >= 0:             # <<<<<<<<<<<<<<
@@ -19156,7 +19211,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
  */
   }
 
-  /* "View.MemoryView":899
+  /* "View.MemoryView":904
  *             suboffset_dim[0] = new_ndim
  * 
  *     return 0             # <<<<<<<<<<<<<<
@@ -19166,7 +19221,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
   __pyx_r = 0;
   goto __pyx_L0;
 
-  /* "View.MemoryView":802
+  /* "View.MemoryView":807
  * 
  * @cname('__pyx_memoryview_slice_memviewslice')
  * cdef int slice_memviewslice(             # <<<<<<<<<<<<<<
@@ -19190,7 +19245,7 @@ static int __pyx_memoryview_slice_memviewslice(__Pyx_memviewslice *__pyx_v_dst,
   return __pyx_r;
 }
 
-/* "View.MemoryView":905
+/* "View.MemoryView":910
  * 
  * @cname('__pyx_pybuffer_index')
  * cdef char *pybuffer_index(Py_buffer *view, char *bufp, Py_ssize_t index,             # <<<<<<<<<<<<<<
@@ -19212,7 +19267,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   PyObject *__pyx_t_4 = NULL;
   __Pyx_RefNannySetupContext("pybuffer_index", 0);
 
-  /* "View.MemoryView":907
+  /* "View.MemoryView":912
  * cdef char *pybuffer_index(Py_buffer *view, char *bufp, Py_ssize_t index,
  *                           Py_ssize_t dim) except NULL:
  *     cdef Py_ssize_t shape, stride, suboffset = -1             # <<<<<<<<<<<<<<
@@ -19221,7 +19276,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
   __pyx_v_suboffset = -1L;
 
-  /* "View.MemoryView":908
+  /* "View.MemoryView":913
  *                           Py_ssize_t dim) except NULL:
  *     cdef Py_ssize_t shape, stride, suboffset = -1
  *     cdef Py_ssize_t itemsize = view.itemsize             # <<<<<<<<<<<<<<
@@ -19231,7 +19286,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   __pyx_t_1 = __pyx_v_view->itemsize;
   __pyx_v_itemsize = __pyx_t_1;
 
-  /* "View.MemoryView":911
+  /* "View.MemoryView":916
  *     cdef char *resultp
  * 
  *     if view.ndim == 0:             # <<<<<<<<<<<<<<
@@ -19241,7 +19296,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   __pyx_t_2 = ((__pyx_v_view->ndim == 0) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":912
+    /* "View.MemoryView":917
  * 
  *     if view.ndim == 0:
  *         shape = view.len / itemsize             # <<<<<<<<<<<<<<
@@ -19250,15 +19305,15 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
     if (unlikely(__pyx_v_itemsize == 0)) {
       PyErr_SetString(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-      __PYX_ERR(1, 912, __pyx_L1_error)
+      __PYX_ERR(1, 917, __pyx_L1_error)
     }
     else if (sizeof(Py_ssize_t) == sizeof(long) && (!(((Py_ssize_t)-1) > 0)) && unlikely(__pyx_v_itemsize == (Py_ssize_t)-1)  && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_v_view->len))) {
       PyErr_SetString(PyExc_OverflowError, "value too large to perform division");
-      __PYX_ERR(1, 912, __pyx_L1_error)
+      __PYX_ERR(1, 917, __pyx_L1_error)
     }
     __pyx_v_shape = __Pyx_div_Py_ssize_t(__pyx_v_view->len, __pyx_v_itemsize);
 
-    /* "View.MemoryView":913
+    /* "View.MemoryView":918
  *     if view.ndim == 0:
  *         shape = view.len / itemsize
  *         stride = itemsize             # <<<<<<<<<<<<<<
@@ -19267,7 +19322,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
     __pyx_v_stride = __pyx_v_itemsize;
 
-    /* "View.MemoryView":911
+    /* "View.MemoryView":916
  *     cdef char *resultp
  * 
  *     if view.ndim == 0:             # <<<<<<<<<<<<<<
@@ -19277,7 +19332,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":915
+  /* "View.MemoryView":920
  *         stride = itemsize
  *     else:
  *         shape = view.shape[dim]             # <<<<<<<<<<<<<<
@@ -19287,7 +19342,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   /*else*/ {
     __pyx_v_shape = (__pyx_v_view->shape[__pyx_v_dim]);
 
-    /* "View.MemoryView":916
+    /* "View.MemoryView":921
  *     else:
  *         shape = view.shape[dim]
  *         stride = view.strides[dim]             # <<<<<<<<<<<<<<
@@ -19296,7 +19351,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
     __pyx_v_stride = (__pyx_v_view->strides[__pyx_v_dim]);
 
-    /* "View.MemoryView":917
+    /* "View.MemoryView":922
  *         shape = view.shape[dim]
  *         stride = view.strides[dim]
  *         if view.suboffsets != NULL:             # <<<<<<<<<<<<<<
@@ -19306,7 +19361,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
     __pyx_t_2 = ((__pyx_v_view->suboffsets != NULL) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":918
+      /* "View.MemoryView":923
  *         stride = view.strides[dim]
  *         if view.suboffsets != NULL:
  *             suboffset = view.suboffsets[dim]             # <<<<<<<<<<<<<<
@@ -19315,7 +19370,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
       __pyx_v_suboffset = (__pyx_v_view->suboffsets[__pyx_v_dim]);
 
-      /* "View.MemoryView":917
+      /* "View.MemoryView":922
  *         shape = view.shape[dim]
  *         stride = view.strides[dim]
  *         if view.suboffsets != NULL:             # <<<<<<<<<<<<<<
@@ -19326,7 +19381,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":920
+  /* "View.MemoryView":925
  *             suboffset = view.suboffsets[dim]
  * 
  *     if index < 0:             # <<<<<<<<<<<<<<
@@ -19336,7 +19391,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   __pyx_t_2 = ((__pyx_v_index < 0) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":921
+    /* "View.MemoryView":926
  * 
  *     if index < 0:
  *         index += view.shape[dim]             # <<<<<<<<<<<<<<
@@ -19345,7 +19400,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
     __pyx_v_index = (__pyx_v_index + (__pyx_v_view->shape[__pyx_v_dim]));
 
-    /* "View.MemoryView":922
+    /* "View.MemoryView":927
  *     if index < 0:
  *         index += view.shape[dim]
  *         if index < 0:             # <<<<<<<<<<<<<<
@@ -19355,26 +19410,26 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
     __pyx_t_2 = ((__pyx_v_index < 0) != 0);
     if (unlikely(__pyx_t_2)) {
 
-      /* "View.MemoryView":923
+      /* "View.MemoryView":928
  *         index += view.shape[dim]
  *         if index < 0:
  *             raise IndexError("Out of bounds on buffer access (axis %d)" % dim)             # <<<<<<<<<<<<<<
  * 
  *     if index >= shape:
  */
-      __pyx_t_3 = PyInt_FromSsize_t(__pyx_v_dim); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 923, __pyx_L1_error)
+      __pyx_t_3 = PyInt_FromSsize_t(__pyx_v_dim); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 928, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_3);
-      __pyx_t_4 = __Pyx_PyString_Format(__pyx_kp_s_Out_of_bounds_on_buffer_access_a, __pyx_t_3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 923, __pyx_L1_error)
+      __pyx_t_4 = __Pyx_PyString_Format(__pyx_kp_s_Out_of_bounds_on_buffer_access_a, __pyx_t_3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 928, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-      __pyx_t_3 = __Pyx_PyObject_CallOneArg(__pyx_builtin_IndexError, __pyx_t_4); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 923, __pyx_L1_error)
+      __pyx_t_3 = __Pyx_PyObject_CallOneArg(__pyx_builtin_IndexError, __pyx_t_4); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 928, __pyx_L1_error)
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __Pyx_Raise(__pyx_t_3, 0, 0, 0);
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-      __PYX_ERR(1, 923, __pyx_L1_error)
+      __PYX_ERR(1, 928, __pyx_L1_error)
 
-      /* "View.MemoryView":922
+      /* "View.MemoryView":927
  *     if index < 0:
  *         index += view.shape[dim]
  *         if index < 0:             # <<<<<<<<<<<<<<
@@ -19383,7 +19438,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
     }
 
-    /* "View.MemoryView":920
+    /* "View.MemoryView":925
  *             suboffset = view.suboffsets[dim]
  * 
  *     if index < 0:             # <<<<<<<<<<<<<<
@@ -19392,7 +19447,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
   }
 
-  /* "View.MemoryView":925
+  /* "View.MemoryView":930
  *             raise IndexError("Out of bounds on buffer access (axis %d)" % dim)
  * 
  *     if index >= shape:             # <<<<<<<<<<<<<<
@@ -19402,26 +19457,26 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   __pyx_t_2 = ((__pyx_v_index >= __pyx_v_shape) != 0);
   if (unlikely(__pyx_t_2)) {
 
-    /* "View.MemoryView":926
+    /* "View.MemoryView":931
  * 
  *     if index >= shape:
  *         raise IndexError("Out of bounds on buffer access (axis %d)" % dim)             # <<<<<<<<<<<<<<
  * 
  *     resultp = bufp + index * stride
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-    __pyx_t_3 = PyInt_FromSsize_t(__pyx_v_dim); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 926, __pyx_L1_error)
+    __pyx_t_3 = PyInt_FromSsize_t(__pyx_v_dim); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 931, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_4 = __Pyx_PyString_Format(__pyx_kp_s_Out_of_bounds_on_buffer_access_a, __pyx_t_3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 926, __pyx_L1_error)
+    __pyx_t_4 = __Pyx_PyString_Format(__pyx_kp_s_Out_of_bounds_on_buffer_access_a, __pyx_t_3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 931, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __pyx_t_3 = __Pyx_PyObject_CallOneArg(__pyx_builtin_IndexError, __pyx_t_4); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 926, __pyx_L1_error)
+    __pyx_t_3 = __Pyx_PyObject_CallOneArg(__pyx_builtin_IndexError, __pyx_t_4); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 931, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     __Pyx_Raise(__pyx_t_3, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __PYX_ERR(1, 926, __pyx_L1_error)
+    __PYX_ERR(1, 931, __pyx_L1_error)
 
-    /* "View.MemoryView":925
+    /* "View.MemoryView":930
  *             raise IndexError("Out of bounds on buffer access (axis %d)" % dim)
  * 
  *     if index >= shape:             # <<<<<<<<<<<<<<
@@ -19430,7 +19485,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
   }
 
-  /* "View.MemoryView":928
+  /* "View.MemoryView":933
  *         raise IndexError("Out of bounds on buffer access (axis %d)" % dim)
  * 
  *     resultp = bufp + index * stride             # <<<<<<<<<<<<<<
@@ -19439,7 +19494,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
   __pyx_v_resultp = (__pyx_v_bufp + (__pyx_v_index * __pyx_v_stride));
 
-  /* "View.MemoryView":929
+  /* "View.MemoryView":934
  * 
  *     resultp = bufp + index * stride
  *     if suboffset >= 0:             # <<<<<<<<<<<<<<
@@ -19449,7 +19504,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   __pyx_t_2 = ((__pyx_v_suboffset >= 0) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":930
+    /* "View.MemoryView":935
  *     resultp = bufp + index * stride
  *     if suboffset >= 0:
  *         resultp = (<char **> resultp)[0] + suboffset             # <<<<<<<<<<<<<<
@@ -19458,7 +19513,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
     __pyx_v_resultp = ((((char **)__pyx_v_resultp)[0]) + __pyx_v_suboffset);
 
-    /* "View.MemoryView":929
+    /* "View.MemoryView":934
  * 
  *     resultp = bufp + index * stride
  *     if suboffset >= 0:             # <<<<<<<<<<<<<<
@@ -19467,7 +19522,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
  */
   }
 
-  /* "View.MemoryView":932
+  /* "View.MemoryView":937
  *         resultp = (<char **> resultp)[0] + suboffset
  * 
  *     return resultp             # <<<<<<<<<<<<<<
@@ -19477,7 +19532,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   __pyx_r = __pyx_v_resultp;
   goto __pyx_L0;
 
-  /* "View.MemoryView":905
+  /* "View.MemoryView":910
  * 
  * @cname('__pyx_pybuffer_index')
  * cdef char *pybuffer_index(Py_buffer *view, char *bufp, Py_ssize_t index,             # <<<<<<<<<<<<<<
@@ -19496,7 +19551,7 @@ static char *__pyx_pybuffer_index(Py_buffer *__pyx_v_view, char *__pyx_v_bufp, P
   return __pyx_r;
 }
 
-/* "View.MemoryView":938
+/* "View.MemoryView":943
  * 
  * @cname('__pyx_memslice_transpose')
  * cdef int transpose_memslice(__Pyx_memviewslice *memslice) nogil except 0:             # <<<<<<<<<<<<<<
@@ -19521,7 +19576,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
   int __pyx_t_8;
   int __pyx_t_9;
 
-  /* "View.MemoryView":939
+  /* "View.MemoryView":944
  * @cname('__pyx_memslice_transpose')
  * cdef int transpose_memslice(__Pyx_memviewslice *memslice) nogil except 0:
  *     cdef int ndim = memslice.memview.view.ndim             # <<<<<<<<<<<<<<
@@ -19531,7 +19586,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
   __pyx_t_1 = __pyx_v_memslice->memview->view.ndim;
   __pyx_v_ndim = __pyx_t_1;
 
-  /* "View.MemoryView":941
+  /* "View.MemoryView":946
  *     cdef int ndim = memslice.memview.view.ndim
  * 
  *     cdef Py_ssize_t *shape = memslice.shape             # <<<<<<<<<<<<<<
@@ -19541,7 +19596,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
   __pyx_t_2 = __pyx_v_memslice->shape;
   __pyx_v_shape = __pyx_t_2;
 
-  /* "View.MemoryView":942
+  /* "View.MemoryView":947
  * 
  *     cdef Py_ssize_t *shape = memslice.shape
  *     cdef Py_ssize_t *strides = memslice.strides             # <<<<<<<<<<<<<<
@@ -19551,7 +19606,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
   __pyx_t_2 = __pyx_v_memslice->strides;
   __pyx_v_strides = __pyx_t_2;
 
-  /* "View.MemoryView":946
+  /* "View.MemoryView":951
  * 
  *     cdef int i, j
  *     for i in range(ndim / 2):             # <<<<<<<<<<<<<<
@@ -19563,7 +19618,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
   for (__pyx_t_1 = 0; __pyx_t_1 < __pyx_t_4; __pyx_t_1+=1) {
     __pyx_v_i = __pyx_t_1;
 
-    /* "View.MemoryView":947
+    /* "View.MemoryView":952
  *     cdef int i, j
  *     for i in range(ndim / 2):
  *         j = ndim - 1 - i             # <<<<<<<<<<<<<<
@@ -19572,7 +19627,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
  */
     __pyx_v_j = ((__pyx_v_ndim - 1) - __pyx_v_i);
 
-    /* "View.MemoryView":948
+    /* "View.MemoryView":953
  *     for i in range(ndim / 2):
  *         j = ndim - 1 - i
  *         strides[i], strides[j] = strides[j], strides[i]             # <<<<<<<<<<<<<<
@@ -19584,7 +19639,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
     (__pyx_v_strides[__pyx_v_i]) = __pyx_t_5;
     (__pyx_v_strides[__pyx_v_j]) = __pyx_t_6;
 
-    /* "View.MemoryView":949
+    /* "View.MemoryView":954
  *         j = ndim - 1 - i
  *         strides[i], strides[j] = strides[j], strides[i]
  *         shape[i], shape[j] = shape[j], shape[i]             # <<<<<<<<<<<<<<
@@ -19596,7 +19651,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
     (__pyx_v_shape[__pyx_v_i]) = __pyx_t_6;
     (__pyx_v_shape[__pyx_v_j]) = __pyx_t_5;
 
-    /* "View.MemoryView":951
+    /* "View.MemoryView":956
  *         shape[i], shape[j] = shape[j], shape[i]
  * 
  *         if memslice.suboffsets[i] >= 0 or memslice.suboffsets[j] >= 0:             # <<<<<<<<<<<<<<
@@ -19614,16 +19669,16 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
     __pyx_L6_bool_binop_done:;
     if (__pyx_t_7) {
 
-      /* "View.MemoryView":952
+      /* "View.MemoryView":957
  * 
  *         if memslice.suboffsets[i] >= 0 or memslice.suboffsets[j] >= 0:
  *             _err(ValueError, "Cannot transpose memoryview with indirect dimensions")             # <<<<<<<<<<<<<<
  * 
  *     return 1
  */
-      __pyx_t_9 = __pyx_memoryview_err(__pyx_builtin_ValueError, ((char *)"Cannot transpose memoryview with indirect dimensions")); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 952, __pyx_L1_error)
+      __pyx_t_9 = __pyx_memoryview_err(__pyx_builtin_ValueError, ((char *)"Cannot transpose memoryview with indirect dimensions")); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(1, 957, __pyx_L1_error)
 
-      /* "View.MemoryView":951
+      /* "View.MemoryView":956
  *         shape[i], shape[j] = shape[j], shape[i]
  * 
  *         if memslice.suboffsets[i] >= 0 or memslice.suboffsets[j] >= 0:             # <<<<<<<<<<<<<<
@@ -19633,7 +19688,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
     }
   }
 
-  /* "View.MemoryView":954
+  /* "View.MemoryView":959
  *             _err(ValueError, "Cannot transpose memoryview with indirect dimensions")
  * 
  *     return 1             # <<<<<<<<<<<<<<
@@ -19643,7 +19698,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
   __pyx_r = 1;
   goto __pyx_L0;
 
-  /* "View.MemoryView":938
+  /* "View.MemoryView":943
  * 
  * @cname('__pyx_memslice_transpose')
  * cdef int transpose_memslice(__Pyx_memviewslice *memslice) nogil except 0:             # <<<<<<<<<<<<<<
@@ -19667,7 +19722,7 @@ static int __pyx_memslice_transpose(__Pyx_memviewslice *__pyx_v_memslice) {
   return __pyx_r;
 }
 
-/* "View.MemoryView":971
+/* "View.MemoryView":976
  *     cdef int (*to_dtype_func)(char *, object) except 0
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -19690,7 +19745,7 @@ static void __pyx_memoryviewslice___pyx_pf_15View_dot_MemoryView_16_memoryviewsl
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__dealloc__", 0);
 
-  /* "View.MemoryView":972
+  /* "View.MemoryView":977
  * 
  *     def __dealloc__(self):
  *         __PYX_XDEC_MEMVIEW(&self.from_slice, 1)             # <<<<<<<<<<<<<<
@@ -19699,7 +19754,7 @@ static void __pyx_memoryviewslice___pyx_pf_15View_dot_MemoryView_16_memoryviewsl
  */
   __PYX_XDEC_MEMVIEW((&__pyx_v_self->from_slice), 1);
 
-  /* "View.MemoryView":971
+  /* "View.MemoryView":976
  *     cdef int (*to_dtype_func)(char *, object) except 0
  * 
  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
@@ -19711,7 +19766,7 @@ static void __pyx_memoryviewslice___pyx_pf_15View_dot_MemoryView_16_memoryviewsl
   __Pyx_RefNannyFinishContext();
 }
 
-/* "View.MemoryView":974
+/* "View.MemoryView":979
  *         __PYX_XDEC_MEMVIEW(&self.from_slice, 1)
  * 
  *     cdef convert_item_to_object(self, char *itemp):             # <<<<<<<<<<<<<<
@@ -19726,7 +19781,7 @@ static PyObject *__pyx_memoryviewslice_convert_item_to_object(struct __pyx_memor
   PyObject *__pyx_t_2 = NULL;
   __Pyx_RefNannySetupContext("convert_item_to_object", 0);
 
-  /* "View.MemoryView":975
+  /* "View.MemoryView":980
  * 
  *     cdef convert_item_to_object(self, char *itemp):
  *         if self.to_object_func != NULL:             # <<<<<<<<<<<<<<
@@ -19736,7 +19791,7 @@ static PyObject *__pyx_memoryviewslice_convert_item_to_object(struct __pyx_memor
   __pyx_t_1 = ((__pyx_v_self->to_object_func != NULL) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":976
+    /* "View.MemoryView":981
  *     cdef convert_item_to_object(self, char *itemp):
  *         if self.to_object_func != NULL:
  *             return self.to_object_func(itemp)             # <<<<<<<<<<<<<<
@@ -19744,13 +19799,13 @@ static PyObject *__pyx_memoryviewslice_convert_item_to_object(struct __pyx_memor
  *             return memoryview.convert_item_to_object(self, itemp)
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     __Pyx_XDECREF(__pyx_r);
-    __pyx_t_2 = __pyx_v_self->to_object_func(__pyx_v_itemp); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 976, __pyx_L1_error)
+    __pyx_t_2 = __pyx_v_self->to_object_func(__pyx_v_itemp); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 981, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
     __pyx_r = __pyx_t_2;
     __pyx_t_2 = 0;
     goto __pyx_L0;
 
-    /* "View.MemoryView":975
+    /* "View.MemoryView":980
  * 
  *     cdef convert_item_to_object(self, char *itemp):
  *         if self.to_object_func != NULL:             # <<<<<<<<<<<<<<
@@ -19759,7 +19814,7 @@ static PyObject *__pyx_memoryviewslice_convert_item_to_object(struct __pyx_memor
  */
   }
 
-  /* "View.MemoryView":978
+  /* "View.MemoryView":983
  *             return self.to_object_func(itemp)
  *         else:
  *             return memoryview.convert_item_to_object(self, itemp)             # <<<<<<<<<<<<<<
@@ -19768,14 +19823,14 @@ static PyObject *__pyx_memoryviewslice_convert_item_to_object(struct __pyx_memor
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   /*else*/ {
     __Pyx_XDECREF(__pyx_r);
-    __pyx_t_2 = __pyx_memoryview_convert_item_to_object(((struct __pyx_memoryview_obj *)__pyx_v_self), __pyx_v_itemp); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 978, __pyx_L1_error)
+    __pyx_t_2 = __pyx_memoryview_convert_item_to_object(((struct __pyx_memoryview_obj *)__pyx_v_self), __pyx_v_itemp); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 983, __pyx_L1_error)
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     __pyx_r = __pyx_t_2;
     __pyx_t_2 = 0;
     goto __pyx_L0;
   }
 
-  /* "View.MemoryView":974
+  /* "View.MemoryView":979
  *         __PYX_XDEC_MEMVIEW(&self.from_slice, 1)
  * 
  *     cdef convert_item_to_object(self, char *itemp):             # <<<<<<<<<<<<<<
@@ -19794,7 +19849,7 @@ static PyObject *__pyx_memoryviewslice_convert_item_to_object(struct __pyx_memor
   return __pyx_r;
 }
 
-/* "View.MemoryView":980
+/* "View.MemoryView":985
  *             return memoryview.convert_item_to_object(self, itemp)
  * 
  *     cdef assign_item_from_object(self, char *itemp, object value):             # <<<<<<<<<<<<<<
@@ -19810,7 +19865,7 @@ static PyObject *__pyx_memoryviewslice_assign_item_from_object(struct __pyx_memo
   PyObject *__pyx_t_3 = NULL;
   __Pyx_RefNannySetupContext("assign_item_from_object", 0);
 
-  /* "View.MemoryView":981
+  /* "View.MemoryView":986
  * 
  *     cdef assign_item_from_object(self, char *itemp, object value):
  *         if self.to_dtype_func != NULL:             # <<<<<<<<<<<<<<
@@ -19820,16 +19875,16 @@ static PyObject *__pyx_memoryviewslice_assign_item_from_object(struct __pyx_memo
   __pyx_t_1 = ((__pyx_v_self->to_dtype_func != NULL) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":982
+    /* "View.MemoryView":987
  *     cdef assign_item_from_object(self, char *itemp, object value):
  *         if self.to_dtype_func != NULL:
  *             self.to_dtype_func(itemp, value)             # <<<<<<<<<<<<<<
  *         else:
  *             memoryview.assign_item_from_object(self, itemp, value)
  */
-    __pyx_t_2 = __pyx_v_self->to_dtype_func(__pyx_v_itemp, __pyx_v_value); if (unlikely(__pyx_t_2 == ((int)0))) __PYX_ERR(1, 982, __pyx_L1_error)
+    __pyx_t_2 = __pyx_v_self->to_dtype_func(__pyx_v_itemp, __pyx_v_value); if (unlikely(__pyx_t_2 == ((int)0))) __PYX_ERR(1, 987, __pyx_L1_error)
 
-    /* "View.MemoryView":981
+    /* "View.MemoryView":986
  * 
  *     cdef assign_item_from_object(self, char *itemp, object value):
  *         if self.to_dtype_func != NULL:             # <<<<<<<<<<<<<<
@@ -19839,7 +19894,7 @@ static PyObject *__pyx_memoryviewslice_assign_item_from_object(struct __pyx_memo
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":984
+  /* "View.MemoryView":989
  *             self.to_dtype_func(itemp, value)
  *         else:
  *             memoryview.assign_item_from_object(self, itemp, value)             # <<<<<<<<<<<<<<
@@ -19847,13 +19902,13 @@ static PyObject *__pyx_memoryviewslice_assign_item_from_object(struct __pyx_memo
  *     @property
  */
   /*else*/ {
-    __pyx_t_3 = __pyx_memoryview_assign_item_from_object(((struct __pyx_memoryview_obj *)__pyx_v_self), __pyx_v_itemp, __pyx_v_value); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 984, __pyx_L1_error)
+    __pyx_t_3 = __pyx_memoryview_assign_item_from_object(((struct __pyx_memoryview_obj *)__pyx_v_self), __pyx_v_itemp, __pyx_v_value); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 989, __pyx_L1_error)
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   }
   __pyx_L3:;
 
-  /* "View.MemoryView":980
+  /* "View.MemoryView":985
  *             return memoryview.convert_item_to_object(self, itemp)
  * 
  *     cdef assign_item_from_object(self, char *itemp, object value):             # <<<<<<<<<<<<<<
@@ -19874,7 +19929,7 @@ static PyObject *__pyx_memoryviewslice_assign_item_from_object(struct __pyx_memo
   return __pyx_r;
 }
 
-/* "View.MemoryView":987
+/* "View.MemoryView":992
  * 
  *     @property
  *     def base(self):             # <<<<<<<<<<<<<<
@@ -19900,7 +19955,7 @@ static PyObject *__pyx_pf_15View_dot_MemoryView_16_memoryviewslice_4base___get__
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__get__", 0);
 
-  /* "View.MemoryView":988
+  /* "View.MemoryView":993
  *     @property
  *     def base(self):
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@@ -19912,7 +19967,7 @@ static PyObject *__pyx_pf_15View_dot_MemoryView_16_memoryviewslice_4base___get__
   __pyx_r = __pyx_v_self->from_object;
   goto __pyx_L0;
 
-  /* "View.MemoryView":987
+  /* "View.MemoryView":992
  * 
  *     @property
  *     def base(self):             # <<<<<<<<<<<<<<
@@ -20034,7 +20089,7 @@ static PyObject *__pyx_pf___pyx_memoryviewslice_2__setstate_cython__(CYTHON_UNUS
   return __pyx_r;
 }
 
-/* "View.MemoryView":994
+/* "View.MemoryView":999
  * 
  * @cname('__pyx_memoryview_fromslice')
  * cdef memoryview_fromslice(__Pyx_memviewslice memviewslice,             # <<<<<<<<<<<<<<
@@ -20059,7 +20114,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   Py_ssize_t __pyx_t_9;
   __Pyx_RefNannySetupContext("memoryview_fromslice", 0);
 
-  /* "View.MemoryView":1002
+  /* "View.MemoryView":1007
  *     cdef _memoryviewslice result
  * 
  *     if <PyObject *> memviewslice.memview == Py_None:             # <<<<<<<<<<<<<<
@@ -20069,7 +20124,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __pyx_t_1 = ((((PyObject *)__pyx_v_memviewslice.memview) == Py_None) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":1003
+    /* "View.MemoryView":1008
  * 
  *     if <PyObject *> memviewslice.memview == Py_None:
  *         return None             # <<<<<<<<<<<<<<
@@ -20080,7 +20135,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
     __pyx_r = Py_None; __Pyx_INCREF(Py_None);
     goto __pyx_L0;
 
-    /* "View.MemoryView":1002
+    /* "View.MemoryView":1007
  *     cdef _memoryviewslice result
  * 
  *     if <PyObject *> memviewslice.memview == Py_None:             # <<<<<<<<<<<<<<
@@ -20089,16 +20144,16 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   }
 
-  /* "View.MemoryView":1008
+  /* "View.MemoryView":1013
  * 
  * 
  *     result = _memoryviewslice(None, 0, dtype_is_object)             # <<<<<<<<<<<<<<
  * 
  *     result.from_slice = memviewslice
  */
-  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_v_dtype_is_object); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1008, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyBool_FromLong(__pyx_v_dtype_is_object); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1013, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
-  __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1008, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1013, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_INCREF(Py_None);
   __Pyx_GIVEREF(Py_None);
@@ -20109,13 +20164,13 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __Pyx_GIVEREF(__pyx_t_2);
   PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_t_2);
   __pyx_t_2 = 0;
-  __pyx_t_2 = __Pyx_PyObject_Call(((PyObject *)__pyx_memoryviewslice_type), __pyx_t_3, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1008, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyObject_Call(((PyObject *)__pyx_memoryviewslice_type), __pyx_t_3, NULL); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1013, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
   __pyx_v_result = ((struct __pyx_memoryviewslice_obj *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "View.MemoryView":1010
+  /* "View.MemoryView":1015
  *     result = _memoryviewslice(None, 0, dtype_is_object)
  * 
  *     result.from_slice = memviewslice             # <<<<<<<<<<<<<<
@@ -20124,7 +20179,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __pyx_v_result->from_slice = __pyx_v_memviewslice;
 
-  /* "View.MemoryView":1011
+  /* "View.MemoryView":1016
  * 
  *     result.from_slice = memviewslice
  *     __PYX_INC_MEMVIEW(&memviewslice, 1)             # <<<<<<<<<<<<<<
@@ -20133,14 +20188,14 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __PYX_INC_MEMVIEW((&__pyx_v_memviewslice), 1);
 
-  /* "View.MemoryView":1013
+  /* "View.MemoryView":1018
  *     __PYX_INC_MEMVIEW(&memviewslice, 1)
  * 
  *     result.from_object = (<memoryview> memviewslice.memview).base             # <<<<<<<<<<<<<<
  *     result.typeinfo = memviewslice.memview.typeinfo
  * 
  */
-  __pyx_t_2 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_memviewslice.memview), __pyx_n_s_base); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1013, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_memviewslice.memview), __pyx_n_s_base); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1018, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_GIVEREF(__pyx_t_2);
   __Pyx_GOTREF(__pyx_v_result->from_object);
@@ -20148,7 +20203,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __pyx_v_result->from_object = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "View.MemoryView":1014
+  /* "View.MemoryView":1019
  * 
  *     result.from_object = (<memoryview> memviewslice.memview).base
  *     result.typeinfo = memviewslice.memview.typeinfo             # <<<<<<<<<<<<<<
@@ -20158,7 +20213,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __pyx_t_4 = __pyx_v_memviewslice.memview->typeinfo;
   __pyx_v_result->__pyx_base.typeinfo = __pyx_t_4;
 
-  /* "View.MemoryView":1016
+  /* "View.MemoryView":1021
  *     result.typeinfo = memviewslice.memview.typeinfo
  * 
  *     result.view = memviewslice.memview.view             # <<<<<<<<<<<<<<
@@ -20168,7 +20223,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __pyx_t_5 = __pyx_v_memviewslice.memview->view;
   __pyx_v_result->__pyx_base.view = __pyx_t_5;
 
-  /* "View.MemoryView":1017
+  /* "View.MemoryView":1022
  * 
  *     result.view = memviewslice.memview.view
  *     result.view.buf = <void *> memviewslice.data             # <<<<<<<<<<<<<<
@@ -20177,7 +20232,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __pyx_v_result->__pyx_base.view.buf = ((void *)__pyx_v_memviewslice.data);
 
-  /* "View.MemoryView":1018
+  /* "View.MemoryView":1023
  *     result.view = memviewslice.memview.view
  *     result.view.buf = <void *> memviewslice.data
  *     result.view.ndim = ndim             # <<<<<<<<<<<<<<
@@ -20186,7 +20241,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __pyx_v_result->__pyx_base.view.ndim = __pyx_v_ndim;
 
-  /* "View.MemoryView":1019
+  /* "View.MemoryView":1024
  *     result.view.buf = <void *> memviewslice.data
  *     result.view.ndim = ndim
  *     (<__pyx_buffer *> &result.view).obj = Py_None             # <<<<<<<<<<<<<<
@@ -20195,7 +20250,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   ((Py_buffer *)(&__pyx_v_result->__pyx_base.view))->obj = Py_None;
 
-  /* "View.MemoryView":1020
+  /* "View.MemoryView":1025
  *     result.view.ndim = ndim
  *     (<__pyx_buffer *> &result.view).obj = Py_None
  *     Py_INCREF(Py_None)             # <<<<<<<<<<<<<<
@@ -20204,7 +20259,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   Py_INCREF(Py_None);
 
-  /* "View.MemoryView":1022
+  /* "View.MemoryView":1027
  *     Py_INCREF(Py_None)
  * 
  *     if (<memoryview>memviewslice.memview).flags & PyBUF_WRITABLE:             # <<<<<<<<<<<<<<
@@ -20214,7 +20269,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __pyx_t_1 = ((((struct __pyx_memoryview_obj *)__pyx_v_memviewslice.memview)->flags & PyBUF_WRITABLE) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":1023
+    /* "View.MemoryView":1028
  * 
  *     if (<memoryview>memviewslice.memview).flags & PyBUF_WRITABLE:
  *         result.flags = PyBUF_RECORDS             # <<<<<<<<<<<<<<
@@ -20223,7 +20278,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
     __pyx_v_result->__pyx_base.flags = PyBUF_RECORDS;
 
-    /* "View.MemoryView":1022
+    /* "View.MemoryView":1027
  *     Py_INCREF(Py_None)
  * 
  *     if (<memoryview>memviewslice.memview).flags & PyBUF_WRITABLE:             # <<<<<<<<<<<<<<
@@ -20233,7 +20288,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
     goto __pyx_L4;
   }
 
-  /* "View.MemoryView":1025
+  /* "View.MemoryView":1030
  *         result.flags = PyBUF_RECORDS
  *     else:
  *         result.flags = PyBUF_RECORDS_RO             # <<<<<<<<<<<<<<
@@ -20245,7 +20300,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   }
   __pyx_L4:;
 
-  /* "View.MemoryView":1027
+  /* "View.MemoryView":1032
  *         result.flags = PyBUF_RECORDS_RO
  * 
  *     result.view.shape = <Py_ssize_t *> result.from_slice.shape             # <<<<<<<<<<<<<<
@@ -20254,7 +20309,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __pyx_v_result->__pyx_base.view.shape = ((Py_ssize_t *)__pyx_v_result->from_slice.shape);
 
-  /* "View.MemoryView":1028
+  /* "View.MemoryView":1033
  * 
  *     result.view.shape = <Py_ssize_t *> result.from_slice.shape
  *     result.view.strides = <Py_ssize_t *> result.from_slice.strides             # <<<<<<<<<<<<<<
@@ -20263,7 +20318,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __pyx_v_result->__pyx_base.view.strides = ((Py_ssize_t *)__pyx_v_result->from_slice.strides);
 
-  /* "View.MemoryView":1031
+  /* "View.MemoryView":1036
  * 
  * 
  *     result.view.suboffsets = NULL             # <<<<<<<<<<<<<<
@@ -20272,7 +20327,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __pyx_v_result->__pyx_base.view.suboffsets = NULL;
 
-  /* "View.MemoryView":1032
+  /* "View.MemoryView":1037
  * 
  *     result.view.suboffsets = NULL
  *     for suboffset in result.from_slice.suboffsets[:ndim]:             # <<<<<<<<<<<<<<
@@ -20284,7 +20339,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
     __pyx_t_6 = __pyx_t_8;
     __pyx_v_suboffset = (__pyx_t_6[0]);
 
-    /* "View.MemoryView":1033
+    /* "View.MemoryView":1038
  *     result.view.suboffsets = NULL
  *     for suboffset in result.from_slice.suboffsets[:ndim]:
  *         if suboffset >= 0:             # <<<<<<<<<<<<<<
@@ -20294,7 +20349,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
     __pyx_t_1 = ((__pyx_v_suboffset >= 0) != 0);
     if (__pyx_t_1) {
 
-      /* "View.MemoryView":1034
+      /* "View.MemoryView":1039
  *     for suboffset in result.from_slice.suboffsets[:ndim]:
  *         if suboffset >= 0:
  *             result.view.suboffsets = <Py_ssize_t *> result.from_slice.suboffsets             # <<<<<<<<<<<<<<
@@ -20303,7 +20358,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
       __pyx_v_result->__pyx_base.view.suboffsets = ((Py_ssize_t *)__pyx_v_result->from_slice.suboffsets);
 
-      /* "View.MemoryView":1035
+      /* "View.MemoryView":1040
  *         if suboffset >= 0:
  *             result.view.suboffsets = <Py_ssize_t *> result.from_slice.suboffsets
  *             break             # <<<<<<<<<<<<<<
@@ -20312,7 +20367,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
       goto __pyx_L6_break;
 
-      /* "View.MemoryView":1033
+      /* "View.MemoryView":1038
  *     result.view.suboffsets = NULL
  *     for suboffset in result.from_slice.suboffsets[:ndim]:
  *         if suboffset >= 0:             # <<<<<<<<<<<<<<
@@ -20323,7 +20378,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   }
   __pyx_L6_break:;
 
-  /* "View.MemoryView":1037
+  /* "View.MemoryView":1042
  *             break
  * 
  *     result.view.len = result.view.itemsize             # <<<<<<<<<<<<<<
@@ -20333,7 +20388,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __pyx_t_9 = __pyx_v_result->__pyx_base.view.itemsize;
   __pyx_v_result->__pyx_base.view.len = __pyx_t_9;
 
-  /* "View.MemoryView":1038
+  /* "View.MemoryView":1043
  * 
  *     result.view.len = result.view.itemsize
  *     for length in result.view.shape[:ndim]:             # <<<<<<<<<<<<<<
@@ -20343,29 +20398,29 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __pyx_t_7 = (__pyx_v_result->__pyx_base.view.shape + __pyx_v_ndim);
   for (__pyx_t_8 = __pyx_v_result->__pyx_base.view.shape; __pyx_t_8 < __pyx_t_7; __pyx_t_8++) {
     __pyx_t_6 = __pyx_t_8;
-    __pyx_t_2 = PyInt_FromSsize_t((__pyx_t_6[0])); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1038, __pyx_L1_error)
+    __pyx_t_2 = PyInt_FromSsize_t((__pyx_t_6[0])); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1043, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_XDECREF_SET(__pyx_v_length, __pyx_t_2);
     __pyx_t_2 = 0;
 
-    /* "View.MemoryView":1039
+    /* "View.MemoryView":1044
  *     result.view.len = result.view.itemsize
  *     for length in result.view.shape[:ndim]:
  *         result.view.len *= length             # <<<<<<<<<<<<<<
  * 
  *     result.to_object_func = to_object_func
  */
-    __pyx_t_2 = PyInt_FromSsize_t(__pyx_v_result->__pyx_base.view.len); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1039, __pyx_L1_error)
+    __pyx_t_2 = PyInt_FromSsize_t(__pyx_v_result->__pyx_base.view.len); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1044, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_3 = PyNumber_InPlaceMultiply(__pyx_t_2, __pyx_v_length); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1039, __pyx_L1_error)
+    __pyx_t_3 = PyNumber_InPlaceMultiply(__pyx_t_2, __pyx_v_length); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1044, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __pyx_t_9 = __Pyx_PyIndex_AsSsize_t(__pyx_t_3); if (unlikely((__pyx_t_9 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 1039, __pyx_L1_error)
+    __pyx_t_9 = __Pyx_PyIndex_AsSsize_t(__pyx_t_3); if (unlikely((__pyx_t_9 == (Py_ssize_t)-1) && PyErr_Occurred())) __PYX_ERR(1, 1044, __pyx_L1_error)
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
     __pyx_v_result->__pyx_base.view.len = __pyx_t_9;
   }
 
-  /* "View.MemoryView":1041
+  /* "View.MemoryView":1046
  *         result.view.len *= length
  * 
  *     result.to_object_func = to_object_func             # <<<<<<<<<<<<<<
@@ -20374,7 +20429,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __pyx_v_result->to_object_func = __pyx_v_to_object_func;
 
-  /* "View.MemoryView":1042
+  /* "View.MemoryView":1047
  * 
  *     result.to_object_func = to_object_func
  *     result.to_dtype_func = to_dtype_func             # <<<<<<<<<<<<<<
@@ -20383,7 +20438,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
  */
   __pyx_v_result->to_dtype_func = __pyx_v_to_dtype_func;
 
-  /* "View.MemoryView":1044
+  /* "View.MemoryView":1049
  *     result.to_dtype_func = to_dtype_func
  * 
  *     return result             # <<<<<<<<<<<<<<
@@ -20395,7 +20450,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   __pyx_r = ((PyObject *)__pyx_v_result);
   goto __pyx_L0;
 
-  /* "View.MemoryView":994
+  /* "View.MemoryView":999
  * 
  * @cname('__pyx_memoryview_fromslice')
  * cdef memoryview_fromslice(__Pyx_memviewslice memviewslice,             # <<<<<<<<<<<<<<
@@ -20417,7 +20472,7 @@ static PyObject *__pyx_memoryview_fromslice(__Pyx_memviewslice __pyx_v_memviewsl
   return __pyx_r;
 }
 
-/* "View.MemoryView":1047
+/* "View.MemoryView":1052
  * 
  * @cname('__pyx_memoryview_get_slice_from_memoryview')
  * cdef __Pyx_memviewslice *get_slice_from_memview(memoryview memview,             # <<<<<<<<<<<<<<
@@ -20434,7 +20489,7 @@ static __Pyx_memviewslice *__pyx_memoryview_get_slice_from_memoryview(struct __p
   PyObject *__pyx_t_3 = NULL;
   __Pyx_RefNannySetupContext("get_slice_from_memview", 0);
 
-  /* "View.MemoryView":1050
+  /* "View.MemoryView":1055
  *                                                    __Pyx_memviewslice *mslice):
  *     cdef _memoryviewslice obj
  *     if isinstance(memview, _memoryviewslice):             # <<<<<<<<<<<<<<
@@ -20445,20 +20500,20 @@ static __Pyx_memviewslice *__pyx_memoryview_get_slice_from_memoryview(struct __p
   __pyx_t_2 = (__pyx_t_1 != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1051
+    /* "View.MemoryView":1056
  *     cdef _memoryviewslice obj
  *     if isinstance(memview, _memoryviewslice):
  *         obj = memview             # <<<<<<<<<<<<<<
  *         return &obj.from_slice
  *     else:
  */
-    if (!(likely(((((PyObject *)__pyx_v_memview)) == Py_None) || likely(__Pyx_TypeTest(((PyObject *)__pyx_v_memview), __pyx_memoryviewslice_type))))) __PYX_ERR(1, 1051, __pyx_L1_error)
+    if (!(likely(((((PyObject *)__pyx_v_memview)) == Py_None) || likely(__Pyx_TypeTest(((PyObject *)__pyx_v_memview), __pyx_memoryviewslice_type))))) __PYX_ERR(1, 1056, __pyx_L1_error)
     __pyx_t_3 = ((PyObject *)__pyx_v_memview);
     __Pyx_INCREF(__pyx_t_3);
     __pyx_v_obj = ((struct __pyx_memoryviewslice_obj *)__pyx_t_3);
     __pyx_t_3 = 0;
 
-    /* "View.MemoryView":1052
+    /* "View.MemoryView":1057
  *     if isinstance(memview, _memoryviewslice):
  *         obj = memview
  *         return &obj.from_slice             # <<<<<<<<<<<<<<
@@ -20468,7 +20523,7 @@ static __Pyx_memviewslice *__pyx_memoryview_get_slice_from_memoryview(struct __p
     __pyx_r = (&__pyx_v_obj->from_slice);
     goto __pyx_L0;
 
-    /* "View.MemoryView":1050
+    /* "View.MemoryView":1055
  *                                                    __Pyx_memviewslice *mslice):
  *     cdef _memoryviewslice obj
  *     if isinstance(memview, _memoryviewslice):             # <<<<<<<<<<<<<<
@@ -20477,7 +20532,7 @@ static __Pyx_memviewslice *__pyx_memoryview_get_slice_from_memoryview(struct __p
  */
   }
 
-  /* "View.MemoryView":1054
+  /* "View.MemoryView":1059
  *         return &obj.from_slice
  *     else:
  *         slice_copy(memview, mslice)             # <<<<<<<<<<<<<<
@@ -20487,7 +20542,7 @@ static __Pyx_memviewslice *__pyx_memoryview_get_slice_from_memoryview(struct __p
   /*else*/ {
     __pyx_memoryview_slice_copy(__pyx_v_memview, __pyx_v_mslice);
 
-    /* "View.MemoryView":1055
+    /* "View.MemoryView":1060
  *     else:
  *         slice_copy(memview, mslice)
  *         return mslice             # <<<<<<<<<<<<<<
@@ -20498,7 +20553,7 @@ static __Pyx_memviewslice *__pyx_memoryview_get_slice_from_memoryview(struct __p
     goto __pyx_L0;
   }
 
-  /* "View.MemoryView":1047
+  /* "View.MemoryView":1052
  * 
  * @cname('__pyx_memoryview_get_slice_from_memoryview')
  * cdef __Pyx_memviewslice *get_slice_from_memview(memoryview memview,             # <<<<<<<<<<<<<<
@@ -20517,7 +20572,7 @@ static __Pyx_memviewslice *__pyx_memoryview_get_slice_from_memoryview(struct __p
   return __pyx_r;
 }
 
-/* "View.MemoryView":1058
+/* "View.MemoryView":1063
  * 
  * @cname('__pyx_memoryview_slice_copy')
  * cdef void slice_copy(memoryview memview, __Pyx_memviewslice *dst):             # <<<<<<<<<<<<<<
@@ -20538,7 +20593,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
   Py_ssize_t __pyx_t_5;
   __Pyx_RefNannySetupContext("slice_copy", 0);
 
-  /* "View.MemoryView":1062
+  /* "View.MemoryView":1067
  *     cdef (Py_ssize_t*) shape, strides, suboffsets
  * 
  *     shape = memview.view.shape             # <<<<<<<<<<<<<<
@@ -20548,7 +20603,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
   __pyx_t_1 = __pyx_v_memview->view.shape;
   __pyx_v_shape = __pyx_t_1;
 
-  /* "View.MemoryView":1063
+  /* "View.MemoryView":1068
  * 
  *     shape = memview.view.shape
  *     strides = memview.view.strides             # <<<<<<<<<<<<<<
@@ -20558,7 +20613,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
   __pyx_t_1 = __pyx_v_memview->view.strides;
   __pyx_v_strides = __pyx_t_1;
 
-  /* "View.MemoryView":1064
+  /* "View.MemoryView":1069
  *     shape = memview.view.shape
  *     strides = memview.view.strides
  *     suboffsets = memview.view.suboffsets             # <<<<<<<<<<<<<<
@@ -20568,7 +20623,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
   __pyx_t_1 = __pyx_v_memview->view.suboffsets;
   __pyx_v_suboffsets = __pyx_t_1;
 
-  /* "View.MemoryView":1066
+  /* "View.MemoryView":1071
  *     suboffsets = memview.view.suboffsets
  * 
  *     dst.memview = <__pyx_memoryview *> memview             # <<<<<<<<<<<<<<
@@ -20577,7 +20632,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
  */
   __pyx_v_dst->memview = ((struct __pyx_memoryview_obj *)__pyx_v_memview);
 
-  /* "View.MemoryView":1067
+  /* "View.MemoryView":1072
  * 
  *     dst.memview = <__pyx_memoryview *> memview
  *     dst.data = <char *> memview.view.buf             # <<<<<<<<<<<<<<
@@ -20586,7 +20641,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
  */
   __pyx_v_dst->data = ((char *)__pyx_v_memview->view.buf);
 
-  /* "View.MemoryView":1069
+  /* "View.MemoryView":1074
  *     dst.data = <char *> memview.view.buf
  * 
  *     for dim in range(memview.view.ndim):             # <<<<<<<<<<<<<<
@@ -20598,7 +20653,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_dim = __pyx_t_4;
 
-    /* "View.MemoryView":1070
+    /* "View.MemoryView":1075
  * 
  *     for dim in range(memview.view.ndim):
  *         dst.shape[dim] = shape[dim]             # <<<<<<<<<<<<<<
@@ -20607,7 +20662,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
  */
     (__pyx_v_dst->shape[__pyx_v_dim]) = (__pyx_v_shape[__pyx_v_dim]);
 
-    /* "View.MemoryView":1071
+    /* "View.MemoryView":1076
  *     for dim in range(memview.view.ndim):
  *         dst.shape[dim] = shape[dim]
  *         dst.strides[dim] = strides[dim]             # <<<<<<<<<<<<<<
@@ -20616,7 +20671,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
  */
     (__pyx_v_dst->strides[__pyx_v_dim]) = (__pyx_v_strides[__pyx_v_dim]);
 
-    /* "View.MemoryView":1072
+    /* "View.MemoryView":1077
  *         dst.shape[dim] = shape[dim]
  *         dst.strides[dim] = strides[dim]
  *         dst.suboffsets[dim] = suboffsets[dim] if suboffsets else -1             # <<<<<<<<<<<<<<
@@ -20631,7 +20686,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
     (__pyx_v_dst->suboffsets[__pyx_v_dim]) = __pyx_t_5;
   }
 
-  /* "View.MemoryView":1058
+  /* "View.MemoryView":1063
  * 
  * @cname('__pyx_memoryview_slice_copy')
  * cdef void slice_copy(memoryview memview, __Pyx_memviewslice *dst):             # <<<<<<<<<<<<<<
@@ -20643,7 +20698,7 @@ static void __pyx_memoryview_slice_copy(struct __pyx_memoryview_obj *__pyx_v_mem
   __Pyx_RefNannyFinishContext();
 }
 
-/* "View.MemoryView":1075
+/* "View.MemoryView":1080
  * 
  * @cname('__pyx_memoryview_copy_object')
  * cdef memoryview_copy(memoryview memview):             # <<<<<<<<<<<<<<
@@ -20658,7 +20713,7 @@ static PyObject *__pyx_memoryview_copy_object(struct __pyx_memoryview_obj *__pyx
   PyObject *__pyx_t_1 = NULL;
   __Pyx_RefNannySetupContext("memoryview_copy", 0);
 
-  /* "View.MemoryView":1078
+  /* "View.MemoryView":1083
  *     "Create a new memoryview object"
  *     cdef __Pyx_memviewslice memviewslice
  *     slice_copy(memview, &memviewslice)             # <<<<<<<<<<<<<<
@@ -20667,7 +20722,7 @@ static PyObject *__pyx_memoryview_copy_object(struct __pyx_memoryview_obj *__pyx
  */
   __pyx_memoryview_slice_copy(__pyx_v_memview, (&__pyx_v_memviewslice));
 
-  /* "View.MemoryView":1079
+  /* "View.MemoryView":1084
  *     cdef __Pyx_memviewslice memviewslice
  *     slice_copy(memview, &memviewslice)
  *     return memoryview_copy_from_slice(memview, &memviewslice)             # <<<<<<<<<<<<<<
@@ -20675,13 +20730,13 @@ static PyObject *__pyx_memoryview_copy_object(struct __pyx_memoryview_obj *__pyx
  * @cname('__pyx_memoryview_copy_object_from_slice')
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = __pyx_memoryview_copy_object_from_slice(__pyx_v_memview, (&__pyx_v_memviewslice)); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1079, __pyx_L1_error)
+  __pyx_t_1 = __pyx_memoryview_copy_object_from_slice(__pyx_v_memview, (&__pyx_v_memviewslice)); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1084, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_r = __pyx_t_1;
   __pyx_t_1 = 0;
   goto __pyx_L0;
 
-  /* "View.MemoryView":1075
+  /* "View.MemoryView":1080
  * 
  * @cname('__pyx_memoryview_copy_object')
  * cdef memoryview_copy(memoryview memview):             # <<<<<<<<<<<<<<
@@ -20700,7 +20755,7 @@ static PyObject *__pyx_memoryview_copy_object(struct __pyx_memoryview_obj *__pyx
   return __pyx_r;
 }
 
-/* "View.MemoryView":1082
+/* "View.MemoryView":1087
  * 
  * @cname('__pyx_memoryview_copy_object_from_slice')
  * cdef memoryview_copy_from_slice(memoryview memview, __Pyx_memviewslice *memviewslice):             # <<<<<<<<<<<<<<
@@ -20720,7 +20775,7 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
   PyObject *__pyx_t_5 = NULL;
   __Pyx_RefNannySetupContext("memoryview_copy_from_slice", 0);
 
-  /* "View.MemoryView":1089
+  /* "View.MemoryView":1094
  *     cdef int (*to_dtype_func)(char *, object) except 0
  * 
  *     if isinstance(memview, _memoryviewslice):             # <<<<<<<<<<<<<<
@@ -20731,7 +20786,7 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
   __pyx_t_2 = (__pyx_t_1 != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1090
+    /* "View.MemoryView":1095
  * 
  *     if isinstance(memview, _memoryviewslice):
  *         to_object_func = (<_memoryviewslice> memview).to_object_func             # <<<<<<<<<<<<<<
@@ -20741,7 +20796,7 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
     __pyx_t_3 = ((struct __pyx_memoryviewslice_obj *)__pyx_v_memview)->to_object_func;
     __pyx_v_to_object_func = __pyx_t_3;
 
-    /* "View.MemoryView":1091
+    /* "View.MemoryView":1096
  *     if isinstance(memview, _memoryviewslice):
  *         to_object_func = (<_memoryviewslice> memview).to_object_func
  *         to_dtype_func = (<_memoryviewslice> memview).to_dtype_func             # <<<<<<<<<<<<<<
@@ -20751,7 +20806,7 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
     __pyx_t_4 = ((struct __pyx_memoryviewslice_obj *)__pyx_v_memview)->to_dtype_func;
     __pyx_v_to_dtype_func = __pyx_t_4;
 
-    /* "View.MemoryView":1089
+    /* "View.MemoryView":1094
  *     cdef int (*to_dtype_func)(char *, object) except 0
  * 
  *     if isinstance(memview, _memoryviewslice):             # <<<<<<<<<<<<<<
@@ -20761,7 +20816,7 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":1093
+  /* "View.MemoryView":1098
  *         to_dtype_func = (<_memoryviewslice> memview).to_dtype_func
  *     else:
  *         to_object_func = NULL             # <<<<<<<<<<<<<<
@@ -20771,7 +20826,7 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
   /*else*/ {
     __pyx_v_to_object_func = NULL;
 
-    /* "View.MemoryView":1094
+    /* "View.MemoryView":1099
  *     else:
  *         to_object_func = NULL
  *         to_dtype_func = NULL             # <<<<<<<<<<<<<<
@@ -20782,7 +20837,7 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":1096
+  /* "View.MemoryView":1101
  *         to_dtype_func = NULL
  * 
  *     return memoryview_fromslice(memviewslice[0], memview.view.ndim,             # <<<<<<<<<<<<<<
@@ -20791,20 +20846,20 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
  */
   __Pyx_XDECREF(__pyx_r);
 
-  /* "View.MemoryView":1098
+  /* "View.MemoryView":1103
  *     return memoryview_fromslice(memviewslice[0], memview.view.ndim,
  *                                 to_object_func, to_dtype_func,
  *                                 memview.dtype_is_object)             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  __pyx_t_5 = __pyx_memoryview_fromslice((__pyx_v_memviewslice[0]), __pyx_v_memview->view.ndim, __pyx_v_to_object_func, __pyx_v_to_dtype_func, __pyx_v_memview->dtype_is_object); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 1096, __pyx_L1_error)
+  __pyx_t_5 = __pyx_memoryview_fromslice((__pyx_v_memviewslice[0]), __pyx_v_memview->view.ndim, __pyx_v_to_object_func, __pyx_v_to_dtype_func, __pyx_v_memview->dtype_is_object); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 1101, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_5);
   __pyx_r = __pyx_t_5;
   __pyx_t_5 = 0;
   goto __pyx_L0;
 
-  /* "View.MemoryView":1082
+  /* "View.MemoryView":1087
  * 
  * @cname('__pyx_memoryview_copy_object_from_slice')
  * cdef memoryview_copy_from_slice(memoryview memview, __Pyx_memviewslice *memviewslice):             # <<<<<<<<<<<<<<
@@ -20823,7 +20878,7 @@ static PyObject *__pyx_memoryview_copy_object_from_slice(struct __pyx_memoryview
   return __pyx_r;
 }
 
-/* "View.MemoryView":1104
+/* "View.MemoryView":1109
  * 
  * 
  * cdef Py_ssize_t abs_py_ssize_t(Py_ssize_t arg) nogil:             # <<<<<<<<<<<<<<
@@ -20835,7 +20890,7 @@ static Py_ssize_t abs_py_ssize_t(Py_ssize_t __pyx_v_arg) {
   Py_ssize_t __pyx_r;
   int __pyx_t_1;
 
-  /* "View.MemoryView":1105
+  /* "View.MemoryView":1110
  * 
  * cdef Py_ssize_t abs_py_ssize_t(Py_ssize_t arg) nogil:
  *     if arg < 0:             # <<<<<<<<<<<<<<
@@ -20845,7 +20900,7 @@ static Py_ssize_t abs_py_ssize_t(Py_ssize_t __pyx_v_arg) {
   __pyx_t_1 = ((__pyx_v_arg < 0) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":1106
+    /* "View.MemoryView":1111
  * cdef Py_ssize_t abs_py_ssize_t(Py_ssize_t arg) nogil:
  *     if arg < 0:
  *         return -arg             # <<<<<<<<<<<<<<
@@ -20855,7 +20910,7 @@ static Py_ssize_t abs_py_ssize_t(Py_ssize_t __pyx_v_arg) {
     __pyx_r = (-__pyx_v_arg);
     goto __pyx_L0;
 
-    /* "View.MemoryView":1105
+    /* "View.MemoryView":1110
  * 
  * cdef Py_ssize_t abs_py_ssize_t(Py_ssize_t arg) nogil:
  *     if arg < 0:             # <<<<<<<<<<<<<<
@@ -20864,7 +20919,7 @@ static Py_ssize_t abs_py_ssize_t(Py_ssize_t __pyx_v_arg) {
  */
   }
 
-  /* "View.MemoryView":1108
+  /* "View.MemoryView":1113
  *         return -arg
  *     else:
  *         return arg             # <<<<<<<<<<<<<<
@@ -20876,7 +20931,7 @@ static Py_ssize_t abs_py_ssize_t(Py_ssize_t __pyx_v_arg) {
     goto __pyx_L0;
   }
 
-  /* "View.MemoryView":1104
+  /* "View.MemoryView":1109
  * 
  * 
  * cdef Py_ssize_t abs_py_ssize_t(Py_ssize_t arg) nogil:             # <<<<<<<<<<<<<<
@@ -20889,7 +20944,7 @@ static Py_ssize_t abs_py_ssize_t(Py_ssize_t __pyx_v_arg) {
   return __pyx_r;
 }
 
-/* "View.MemoryView":1111
+/* "View.MemoryView":1116
  * 
  * @cname('__pyx_get_best_slice_order')
  * cdef char get_best_order(__Pyx_memviewslice *mslice, int ndim) nogil:             # <<<<<<<<<<<<<<
@@ -20907,7 +20962,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
   int __pyx_t_3;
   int __pyx_t_4;
 
-  /* "View.MemoryView":1116
+  /* "View.MemoryView":1121
  *     """
  *     cdef int i
  *     cdef Py_ssize_t c_stride = 0             # <<<<<<<<<<<<<<
@@ -20916,7 +20971,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
  */
   __pyx_v_c_stride = 0;
 
-  /* "View.MemoryView":1117
+  /* "View.MemoryView":1122
  *     cdef int i
  *     cdef Py_ssize_t c_stride = 0
  *     cdef Py_ssize_t f_stride = 0             # <<<<<<<<<<<<<<
@@ -20925,7 +20980,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
  */
   __pyx_v_f_stride = 0;
 
-  /* "View.MemoryView":1119
+  /* "View.MemoryView":1124
  *     cdef Py_ssize_t f_stride = 0
  * 
  *     for i in range(ndim - 1, -1, -1):             # <<<<<<<<<<<<<<
@@ -20935,7 +20990,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
   for (__pyx_t_1 = (__pyx_v_ndim - 1); __pyx_t_1 > -1; __pyx_t_1-=1) {
     __pyx_v_i = __pyx_t_1;
 
-    /* "View.MemoryView":1120
+    /* "View.MemoryView":1125
  * 
  *     for i in range(ndim - 1, -1, -1):
  *         if mslice.shape[i] > 1:             # <<<<<<<<<<<<<<
@@ -20945,7 +21000,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
     __pyx_t_2 = (((__pyx_v_mslice->shape[__pyx_v_i]) > 1) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1121
+      /* "View.MemoryView":1126
  *     for i in range(ndim - 1, -1, -1):
  *         if mslice.shape[i] > 1:
  *             c_stride = mslice.strides[i]             # <<<<<<<<<<<<<<
@@ -20954,7 +21009,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
  */
       __pyx_v_c_stride = (__pyx_v_mslice->strides[__pyx_v_i]);
 
-      /* "View.MemoryView":1122
+      /* "View.MemoryView":1127
  *         if mslice.shape[i] > 1:
  *             c_stride = mslice.strides[i]
  *             break             # <<<<<<<<<<<<<<
@@ -20963,7 +21018,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
  */
       goto __pyx_L4_break;
 
-      /* "View.MemoryView":1120
+      /* "View.MemoryView":1125
  * 
  *     for i in range(ndim - 1, -1, -1):
  *         if mslice.shape[i] > 1:             # <<<<<<<<<<<<<<
@@ -20974,7 +21029,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
   }
   __pyx_L4_break:;
 
-  /* "View.MemoryView":1124
+  /* "View.MemoryView":1129
  *             break
  * 
  *     for i in range(ndim):             # <<<<<<<<<<<<<<
@@ -20986,7 +21041,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_i = __pyx_t_4;
 
-    /* "View.MemoryView":1125
+    /* "View.MemoryView":1130
  * 
  *     for i in range(ndim):
  *         if mslice.shape[i] > 1:             # <<<<<<<<<<<<<<
@@ -20996,7 +21051,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
     __pyx_t_2 = (((__pyx_v_mslice->shape[__pyx_v_i]) > 1) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1126
+      /* "View.MemoryView":1131
  *     for i in range(ndim):
  *         if mslice.shape[i] > 1:
  *             f_stride = mslice.strides[i]             # <<<<<<<<<<<<<<
@@ -21005,7 +21060,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
  */
       __pyx_v_f_stride = (__pyx_v_mslice->strides[__pyx_v_i]);
 
-      /* "View.MemoryView":1127
+      /* "View.MemoryView":1132
  *         if mslice.shape[i] > 1:
  *             f_stride = mslice.strides[i]
  *             break             # <<<<<<<<<<<<<<
@@ -21014,7 +21069,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
  */
       goto __pyx_L7_break;
 
-      /* "View.MemoryView":1125
+      /* "View.MemoryView":1130
  * 
  *     for i in range(ndim):
  *         if mslice.shape[i] > 1:             # <<<<<<<<<<<<<<
@@ -21025,7 +21080,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
   }
   __pyx_L7_break:;
 
-  /* "View.MemoryView":1129
+  /* "View.MemoryView":1134
  *             break
  * 
  *     if abs_py_ssize_t(c_stride) <= abs_py_ssize_t(f_stride):             # <<<<<<<<<<<<<<
@@ -21035,7 +21090,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
   __pyx_t_2 = ((abs_py_ssize_t(__pyx_v_c_stride) <= abs_py_ssize_t(__pyx_v_f_stride)) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1130
+    /* "View.MemoryView":1135
  * 
  *     if abs_py_ssize_t(c_stride) <= abs_py_ssize_t(f_stride):
  *         return 'C'             # <<<<<<<<<<<<<<
@@ -21045,7 +21100,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
     __pyx_r = 'C';
     goto __pyx_L0;
 
-    /* "View.MemoryView":1129
+    /* "View.MemoryView":1134
  *             break
  * 
  *     if abs_py_ssize_t(c_stride) <= abs_py_ssize_t(f_stride):             # <<<<<<<<<<<<<<
@@ -21054,7 +21109,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
  */
   }
 
-  /* "View.MemoryView":1132
+  /* "View.MemoryView":1137
  *         return 'C'
  *     else:
  *         return 'F'             # <<<<<<<<<<<<<<
@@ -21066,7 +21121,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
     goto __pyx_L0;
   }
 
-  /* "View.MemoryView":1111
+  /* "View.MemoryView":1116
  * 
  * @cname('__pyx_get_best_slice_order')
  * cdef char get_best_order(__Pyx_memviewslice *mslice, int ndim) nogil:             # <<<<<<<<<<<<<<
@@ -21079,7 +21134,7 @@ static char __pyx_get_best_slice_order(__Pyx_memviewslice *__pyx_v_mslice, int _
   return __pyx_r;
 }
 
-/* "View.MemoryView":1135
+/* "View.MemoryView":1140
  * 
  * @cython.cdivision(True)
  * cdef void _copy_strided_to_strided(char *src_data, Py_ssize_t *src_strides,             # <<<<<<<<<<<<<<
@@ -21100,7 +21155,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
   Py_ssize_t __pyx_t_5;
   Py_ssize_t __pyx_t_6;
 
-  /* "View.MemoryView":1142
+  /* "View.MemoryView":1147
  * 
  *     cdef Py_ssize_t i
  *     cdef Py_ssize_t src_extent = src_shape[0]             # <<<<<<<<<<<<<<
@@ -21109,7 +21164,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
   __pyx_v_src_extent = (__pyx_v_src_shape[0]);
 
-  /* "View.MemoryView":1143
+  /* "View.MemoryView":1148
  *     cdef Py_ssize_t i
  *     cdef Py_ssize_t src_extent = src_shape[0]
  *     cdef Py_ssize_t dst_extent = dst_shape[0]             # <<<<<<<<<<<<<<
@@ -21118,7 +21173,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
   __pyx_v_dst_extent = (__pyx_v_dst_shape[0]);
 
-  /* "View.MemoryView":1144
+  /* "View.MemoryView":1149
  *     cdef Py_ssize_t src_extent = src_shape[0]
  *     cdef Py_ssize_t dst_extent = dst_shape[0]
  *     cdef Py_ssize_t src_stride = src_strides[0]             # <<<<<<<<<<<<<<
@@ -21127,7 +21182,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
   __pyx_v_src_stride = (__pyx_v_src_strides[0]);
 
-  /* "View.MemoryView":1145
+  /* "View.MemoryView":1150
  *     cdef Py_ssize_t dst_extent = dst_shape[0]
  *     cdef Py_ssize_t src_stride = src_strides[0]
  *     cdef Py_ssize_t dst_stride = dst_strides[0]             # <<<<<<<<<<<<<<
@@ -21136,7 +21191,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
   __pyx_v_dst_stride = (__pyx_v_dst_strides[0]);
 
-  /* "View.MemoryView":1147
+  /* "View.MemoryView":1152
  *     cdef Py_ssize_t dst_stride = dst_strides[0]
  * 
  *     if ndim == 1:             # <<<<<<<<<<<<<<
@@ -21146,7 +21201,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
   __pyx_t_1 = ((__pyx_v_ndim == 1) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":1148
+    /* "View.MemoryView":1153
  * 
  *     if ndim == 1:
  *        if (src_stride > 0 and dst_stride > 0 and             # <<<<<<<<<<<<<<
@@ -21166,7 +21221,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
       goto __pyx_L5_bool_binop_done;
     }
 
-    /* "View.MemoryView":1149
+    /* "View.MemoryView":1154
  *     if ndim == 1:
  *        if (src_stride > 0 and dst_stride > 0 and
  *            <size_t> src_stride == itemsize == <size_t> dst_stride):             # <<<<<<<<<<<<<<
@@ -21181,7 +21236,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
     __pyx_t_1 = __pyx_t_3;
     __pyx_L5_bool_binop_done:;
 
-    /* "View.MemoryView":1148
+    /* "View.MemoryView":1153
  * 
  *     if ndim == 1:
  *        if (src_stride > 0 and dst_stride > 0 and             # <<<<<<<<<<<<<<
@@ -21190,7 +21245,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
     if (__pyx_t_1) {
 
-      /* "View.MemoryView":1150
+      /* "View.MemoryView":1155
  *        if (src_stride > 0 and dst_stride > 0 and
  *            <size_t> src_stride == itemsize == <size_t> dst_stride):
  *            memcpy(dst_data, src_data, itemsize * dst_extent)             # <<<<<<<<<<<<<<
@@ -21199,7 +21254,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
       (void)(memcpy(__pyx_v_dst_data, __pyx_v_src_data, (__pyx_v_itemsize * __pyx_v_dst_extent)));
 
-      /* "View.MemoryView":1148
+      /* "View.MemoryView":1153
  * 
  *     if ndim == 1:
  *        if (src_stride > 0 and dst_stride > 0 and             # <<<<<<<<<<<<<<
@@ -21209,7 +21264,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
       goto __pyx_L4;
     }
 
-    /* "View.MemoryView":1152
+    /* "View.MemoryView":1157
  *            memcpy(dst_data, src_data, itemsize * dst_extent)
  *        else:
  *            for i in range(dst_extent):             # <<<<<<<<<<<<<<
@@ -21222,7 +21277,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
       for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
         __pyx_v_i = __pyx_t_6;
 
-        /* "View.MemoryView":1153
+        /* "View.MemoryView":1158
  *        else:
  *            for i in range(dst_extent):
  *                memcpy(dst_data, src_data, itemsize)             # <<<<<<<<<<<<<<
@@ -21231,7 +21286,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
         (void)(memcpy(__pyx_v_dst_data, __pyx_v_src_data, __pyx_v_itemsize));
 
-        /* "View.MemoryView":1154
+        /* "View.MemoryView":1159
  *            for i in range(dst_extent):
  *                memcpy(dst_data, src_data, itemsize)
  *                src_data += src_stride             # <<<<<<<<<<<<<<
@@ -21240,7 +21295,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
         __pyx_v_src_data = (__pyx_v_src_data + __pyx_v_src_stride);
 
-        /* "View.MemoryView":1155
+        /* "View.MemoryView":1160
  *                memcpy(dst_data, src_data, itemsize)
  *                src_data += src_stride
  *                dst_data += dst_stride             # <<<<<<<<<<<<<<
@@ -21252,7 +21307,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
     }
     __pyx_L4:;
 
-    /* "View.MemoryView":1147
+    /* "View.MemoryView":1152
  *     cdef Py_ssize_t dst_stride = dst_strides[0]
  * 
  *     if ndim == 1:             # <<<<<<<<<<<<<<
@@ -21262,7 +21317,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":1157
+  /* "View.MemoryView":1162
  *                dst_data += dst_stride
  *     else:
  *         for i in range(dst_extent):             # <<<<<<<<<<<<<<
@@ -21275,7 +21330,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
     for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
       __pyx_v_i = __pyx_t_6;
 
-      /* "View.MemoryView":1158
+      /* "View.MemoryView":1163
  *     else:
  *         for i in range(dst_extent):
  *             _copy_strided_to_strided(src_data, src_strides + 1,             # <<<<<<<<<<<<<<
@@ -21284,7 +21339,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
       _copy_strided_to_strided(__pyx_v_src_data, (__pyx_v_src_strides + 1), __pyx_v_dst_data, (__pyx_v_dst_strides + 1), (__pyx_v_src_shape + 1), (__pyx_v_dst_shape + 1), (__pyx_v_ndim - 1), __pyx_v_itemsize);
 
-      /* "View.MemoryView":1162
+      /* "View.MemoryView":1167
  *                                      src_shape + 1, dst_shape + 1,
  *                                      ndim - 1, itemsize)
  *             src_data += src_stride             # <<<<<<<<<<<<<<
@@ -21293,7 +21348,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
  */
       __pyx_v_src_data = (__pyx_v_src_data + __pyx_v_src_stride);
 
-      /* "View.MemoryView":1163
+      /* "View.MemoryView":1168
  *                                      ndim - 1, itemsize)
  *             src_data += src_stride
  *             dst_data += dst_stride             # <<<<<<<<<<<<<<
@@ -21305,7 +21360,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":1135
+  /* "View.MemoryView":1140
  * 
  * @cython.cdivision(True)
  * cdef void _copy_strided_to_strided(char *src_data, Py_ssize_t *src_strides,             # <<<<<<<<<<<<<<
@@ -21316,7 +21371,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
   /* function exit code */
 }
 
-/* "View.MemoryView":1165
+/* "View.MemoryView":1170
  *             dst_data += dst_stride
  * 
  * cdef void copy_strided_to_strided(__Pyx_memviewslice *src,             # <<<<<<<<<<<<<<
@@ -21326,7 +21381,7 @@ static void _copy_strided_to_strided(char *__pyx_v_src_data, Py_ssize_t *__pyx_v
 
 static void copy_strided_to_strided(__Pyx_memviewslice *__pyx_v_src, __Pyx_memviewslice *__pyx_v_dst, int __pyx_v_ndim, size_t __pyx_v_itemsize) {
 
-  /* "View.MemoryView":1168
+  /* "View.MemoryView":1173
  *                                   __Pyx_memviewslice *dst,
  *                                   int ndim, size_t itemsize) nogil:
  *     _copy_strided_to_strided(src.data, src.strides, dst.data, dst.strides,             # <<<<<<<<<<<<<<
@@ -21335,7 +21390,7 @@ static void copy_strided_to_strided(__Pyx_memviewslice *__pyx_v_src, __Pyx_memvi
  */
   _copy_strided_to_strided(__pyx_v_src->data, __pyx_v_src->strides, __pyx_v_dst->data, __pyx_v_dst->strides, __pyx_v_src->shape, __pyx_v_dst->shape, __pyx_v_ndim, __pyx_v_itemsize);
 
-  /* "View.MemoryView":1165
+  /* "View.MemoryView":1170
  *             dst_data += dst_stride
  * 
  * cdef void copy_strided_to_strided(__Pyx_memviewslice *src,             # <<<<<<<<<<<<<<
@@ -21346,7 +21401,7 @@ static void copy_strided_to_strided(__Pyx_memviewslice *__pyx_v_src, __Pyx_memvi
   /* function exit code */
 }
 
-/* "View.MemoryView":1172
+/* "View.MemoryView":1177
  * 
  * @cname('__pyx_memoryview_slice_get_size')
  * cdef Py_ssize_t slice_get_size(__Pyx_memviewslice *src, int ndim) nogil:             # <<<<<<<<<<<<<<
@@ -21363,7 +21418,7 @@ static Py_ssize_t __pyx_memoryview_slice_get_size(__Pyx_memviewslice *__pyx_v_sr
   int __pyx_t_3;
   int __pyx_t_4;
 
-  /* "View.MemoryView":1175
+  /* "View.MemoryView":1180
  *     "Return the size of the memory occupied by the slice in number of bytes"
  *     cdef int i
  *     cdef Py_ssize_t size = src.memview.view.itemsize             # <<<<<<<<<<<<<<
@@ -21373,7 +21428,7 @@ static Py_ssize_t __pyx_memoryview_slice_get_size(__Pyx_memviewslice *__pyx_v_sr
   __pyx_t_1 = __pyx_v_src->memview->view.itemsize;
   __pyx_v_size = __pyx_t_1;
 
-  /* "View.MemoryView":1177
+  /* "View.MemoryView":1182
  *     cdef Py_ssize_t size = src.memview.view.itemsize
  * 
  *     for i in range(ndim):             # <<<<<<<<<<<<<<
@@ -21385,7 +21440,7 @@ static Py_ssize_t __pyx_memoryview_slice_get_size(__Pyx_memviewslice *__pyx_v_sr
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_i = __pyx_t_4;
 
-    /* "View.MemoryView":1178
+    /* "View.MemoryView":1183
  * 
  *     for i in range(ndim):
  *         size *= src.shape[i]             # <<<<<<<<<<<<<<
@@ -21395,7 +21450,7 @@ static Py_ssize_t __pyx_memoryview_slice_get_size(__Pyx_memviewslice *__pyx_v_sr
     __pyx_v_size = (__pyx_v_size * (__pyx_v_src->shape[__pyx_v_i]));
   }
 
-  /* "View.MemoryView":1180
+  /* "View.MemoryView":1185
  *         size *= src.shape[i]
  * 
  *     return size             # <<<<<<<<<<<<<<
@@ -21405,7 +21460,7 @@ static Py_ssize_t __pyx_memoryview_slice_get_size(__Pyx_memviewslice *__pyx_v_sr
   __pyx_r = __pyx_v_size;
   goto __pyx_L0;
 
-  /* "View.MemoryView":1172
+  /* "View.MemoryView":1177
  * 
  * @cname('__pyx_memoryview_slice_get_size')
  * cdef Py_ssize_t slice_get_size(__Pyx_memviewslice *src, int ndim) nogil:             # <<<<<<<<<<<<<<
@@ -21418,7 +21473,7 @@ static Py_ssize_t __pyx_memoryview_slice_get_size(__Pyx_memviewslice *__pyx_v_sr
   return __pyx_r;
 }
 
-/* "View.MemoryView":1183
+/* "View.MemoryView":1188
  * 
  * @cname('__pyx_fill_contig_strides_array')
  * cdef Py_ssize_t fill_contig_strides_array(             # <<<<<<<<<<<<<<
@@ -21434,7 +21489,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
   int __pyx_t_3;
   int __pyx_t_4;
 
-  /* "View.MemoryView":1192
+  /* "View.MemoryView":1197
  *     cdef int idx
  * 
  *     if order == 'F':             # <<<<<<<<<<<<<<
@@ -21444,7 +21499,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
   __pyx_t_1 = ((__pyx_v_order == 'F') != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":1193
+    /* "View.MemoryView":1198
  * 
  *     if order == 'F':
  *         for idx in range(ndim):             # <<<<<<<<<<<<<<
@@ -21456,7 +21511,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
     for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
       __pyx_v_idx = __pyx_t_4;
 
-      /* "View.MemoryView":1194
+      /* "View.MemoryView":1199
  *     if order == 'F':
  *         for idx in range(ndim):
  *             strides[idx] = stride             # <<<<<<<<<<<<<<
@@ -21465,7 +21520,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
  */
       (__pyx_v_strides[__pyx_v_idx]) = __pyx_v_stride;
 
-      /* "View.MemoryView":1195
+      /* "View.MemoryView":1200
  *         for idx in range(ndim):
  *             strides[idx] = stride
  *             stride = stride * shape[idx]             # <<<<<<<<<<<<<<
@@ -21475,7 +21530,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
       __pyx_v_stride = (__pyx_v_stride * (__pyx_v_shape[__pyx_v_idx]));
     }
 
-    /* "View.MemoryView":1192
+    /* "View.MemoryView":1197
  *     cdef int idx
  * 
  *     if order == 'F':             # <<<<<<<<<<<<<<
@@ -21485,7 +21540,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":1197
+  /* "View.MemoryView":1202
  *             stride = stride * shape[idx]
  *     else:
  *         for idx in range(ndim - 1, -1, -1):             # <<<<<<<<<<<<<<
@@ -21496,7 +21551,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
     for (__pyx_t_2 = (__pyx_v_ndim - 1); __pyx_t_2 > -1; __pyx_t_2-=1) {
       __pyx_v_idx = __pyx_t_2;
 
-      /* "View.MemoryView":1198
+      /* "View.MemoryView":1203
  *     else:
  *         for idx in range(ndim - 1, -1, -1):
  *             strides[idx] = stride             # <<<<<<<<<<<<<<
@@ -21505,7 +21560,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
  */
       (__pyx_v_strides[__pyx_v_idx]) = __pyx_v_stride;
 
-      /* "View.MemoryView":1199
+      /* "View.MemoryView":1204
  *         for idx in range(ndim - 1, -1, -1):
  *             strides[idx] = stride
  *             stride = stride * shape[idx]             # <<<<<<<<<<<<<<
@@ -21517,7 +21572,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":1201
+  /* "View.MemoryView":1206
  *             stride = stride * shape[idx]
  * 
  *     return stride             # <<<<<<<<<<<<<<
@@ -21527,7 +21582,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
   __pyx_r = __pyx_v_stride;
   goto __pyx_L0;
 
-  /* "View.MemoryView":1183
+  /* "View.MemoryView":1188
  * 
  * @cname('__pyx_fill_contig_strides_array')
  * cdef Py_ssize_t fill_contig_strides_array(             # <<<<<<<<<<<<<<
@@ -21540,7 +21595,7 @@ static Py_ssize_t __pyx_fill_contig_strides_array(Py_ssize_t *__pyx_v_shape, Py_
   return __pyx_r;
 }
 
-/* "View.MemoryView":1204
+/* "View.MemoryView":1209
  * 
  * @cname('__pyx_memoryview_copy_data_to_temp')
  * cdef void *copy_data_to_temp(__Pyx_memviewslice *src,             # <<<<<<<<<<<<<<
@@ -21561,7 +21616,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   int __pyx_t_5;
   int __pyx_t_6;
 
-  /* "View.MemoryView":1215
+  /* "View.MemoryView":1220
  *     cdef void *result
  * 
  *     cdef size_t itemsize = src.memview.view.itemsize             # <<<<<<<<<<<<<<
@@ -21571,7 +21626,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   __pyx_t_1 = __pyx_v_src->memview->view.itemsize;
   __pyx_v_itemsize = __pyx_t_1;
 
-  /* "View.MemoryView":1216
+  /* "View.MemoryView":1221
  * 
  *     cdef size_t itemsize = src.memview.view.itemsize
  *     cdef size_t size = slice_get_size(src, ndim)             # <<<<<<<<<<<<<<
@@ -21580,7 +21635,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
  */
   __pyx_v_size = __pyx_memoryview_slice_get_size(__pyx_v_src, __pyx_v_ndim);
 
-  /* "View.MemoryView":1218
+  /* "View.MemoryView":1223
  *     cdef size_t size = slice_get_size(src, ndim)
  * 
  *     result = malloc(size)             # <<<<<<<<<<<<<<
@@ -21589,7 +21644,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
  */
   __pyx_v_result = malloc(__pyx_v_size);
 
-  /* "View.MemoryView":1219
+  /* "View.MemoryView":1224
  * 
  *     result = malloc(size)
  *     if not result:             # <<<<<<<<<<<<<<
@@ -21599,16 +21654,16 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   __pyx_t_2 = ((!(__pyx_v_result != 0)) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1220
+    /* "View.MemoryView":1225
  *     result = malloc(size)
  *     if not result:
  *         _err(MemoryError, NULL)             # <<<<<<<<<<<<<<
  * 
  * 
  */
-    __pyx_t_3 = __pyx_memoryview_err(__pyx_builtin_MemoryError, NULL); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(1, 1220, __pyx_L1_error)
+    __pyx_t_3 = __pyx_memoryview_err(__pyx_builtin_MemoryError, NULL); if (unlikely(__pyx_t_3 == ((int)-1))) __PYX_ERR(1, 1225, __pyx_L1_error)
 
-    /* "View.MemoryView":1219
+    /* "View.MemoryView":1224
  * 
  *     result = malloc(size)
  *     if not result:             # <<<<<<<<<<<<<<
@@ -21617,7 +21672,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
  */
   }
 
-  /* "View.MemoryView":1223
+  /* "View.MemoryView":1228
  * 
  * 
  *     tmpslice.data = <char *> result             # <<<<<<<<<<<<<<
@@ -21626,7 +21681,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
  */
   __pyx_v_tmpslice->data = ((char *)__pyx_v_result);
 
-  /* "View.MemoryView":1224
+  /* "View.MemoryView":1229
  * 
  *     tmpslice.data = <char *> result
  *     tmpslice.memview = src.memview             # <<<<<<<<<<<<<<
@@ -21636,7 +21691,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   __pyx_t_4 = __pyx_v_src->memview;
   __pyx_v_tmpslice->memview = __pyx_t_4;
 
-  /* "View.MemoryView":1225
+  /* "View.MemoryView":1230
  *     tmpslice.data = <char *> result
  *     tmpslice.memview = src.memview
  *     for i in range(ndim):             # <<<<<<<<<<<<<<
@@ -21648,7 +21703,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
     __pyx_v_i = __pyx_t_6;
 
-    /* "View.MemoryView":1226
+    /* "View.MemoryView":1231
  *     tmpslice.memview = src.memview
  *     for i in range(ndim):
  *         tmpslice.shape[i] = src.shape[i]             # <<<<<<<<<<<<<<
@@ -21657,7 +21712,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
  */
     (__pyx_v_tmpslice->shape[__pyx_v_i]) = (__pyx_v_src->shape[__pyx_v_i]);
 
-    /* "View.MemoryView":1227
+    /* "View.MemoryView":1232
  *     for i in range(ndim):
  *         tmpslice.shape[i] = src.shape[i]
  *         tmpslice.suboffsets[i] = -1             # <<<<<<<<<<<<<<
@@ -21667,7 +21722,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
     (__pyx_v_tmpslice->suboffsets[__pyx_v_i]) = -1L;
   }
 
-  /* "View.MemoryView":1229
+  /* "View.MemoryView":1234
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  * 
  *     fill_contig_strides_array(&tmpslice.shape[0], &tmpslice.strides[0], itemsize,             # <<<<<<<<<<<<<<
@@ -21676,7 +21731,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
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   (void)(__pyx_fill_contig_strides_array((&(__pyx_v_tmpslice->shape[0])), (&(__pyx_v_tmpslice->strides[0])), __pyx_v_itemsize, __pyx_v_ndim, __pyx_v_order));
 
-  /* "View.MemoryView":1233
+  /* "View.MemoryView":1238
  * 
  * 
  *     for i in range(ndim):             # <<<<<<<<<<<<<<
@@ -21688,7 +21743,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
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     __pyx_v_i = __pyx_t_6;
 
-    /* "View.MemoryView":1234
+    /* "View.MemoryView":1239
  * 
  *     for i in range(ndim):
  *         if tmpslice.shape[i] == 1:             # <<<<<<<<<<<<<<
@@ -21698,7 +21753,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
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     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1235
+      /* "View.MemoryView":1240
  *     for i in range(ndim):
  *         if tmpslice.shape[i] == 1:
  *             tmpslice.strides[i] = 0             # <<<<<<<<<<<<<<
@@ -21707,7 +21762,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
  */
       (__pyx_v_tmpslice->strides[__pyx_v_i]) = 0;
 
-      /* "View.MemoryView":1234
+      /* "View.MemoryView":1239
  * 
  *     for i in range(ndim):
  *         if tmpslice.shape[i] == 1:             # <<<<<<<<<<<<<<
@@ -21717,7 +21772,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
     }
   }
 
-  /* "View.MemoryView":1237
+  /* "View.MemoryView":1242
  *             tmpslice.strides[i] = 0
  * 
  *     if slice_is_contig(src[0], order, ndim):             # <<<<<<<<<<<<<<
@@ -21727,7 +21782,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   __pyx_t_2 = (__pyx_memviewslice_is_contig((__pyx_v_src[0]), __pyx_v_order, __pyx_v_ndim) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1238
+    /* "View.MemoryView":1243
  * 
  *     if slice_is_contig(src[0], order, ndim):
  *         memcpy(result, src.data, size)             # <<<<<<<<<<<<<<
@@ -21736,7 +21791,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
  */
     (void)(memcpy(__pyx_v_result, __pyx_v_src->data, __pyx_v_size));
 
-    /* "View.MemoryView":1237
+    /* "View.MemoryView":1242
  *             tmpslice.strides[i] = 0
  * 
  *     if slice_is_contig(src[0], order, ndim):             # <<<<<<<<<<<<<<
@@ -21746,7 +21801,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
     goto __pyx_L9;
   }
 
-  /* "View.MemoryView":1240
+  /* "View.MemoryView":1245
  *         memcpy(result, src.data, size)
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  *         copy_strided_to_strided(src, tmpslice, ndim, itemsize)             # <<<<<<<<<<<<<<
@@ -21758,7 +21813,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   }
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-  /* "View.MemoryView":1242
+  /* "View.MemoryView":1247
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  *     return result             # <<<<<<<<<<<<<<
@@ -21768,7 +21823,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   __pyx_r = __pyx_v_result;
   goto __pyx_L0;
 
-  /* "View.MemoryView":1204
+  /* "View.MemoryView":1209
  * 
  * @cname('__pyx_memoryview_copy_data_to_temp')
  * cdef void *copy_data_to_temp(__Pyx_memviewslice *src,             # <<<<<<<<<<<<<<
@@ -21792,7 +21847,7 @@ static void *__pyx_memoryview_copy_data_to_temp(__Pyx_memviewslice *__pyx_v_src,
   return __pyx_r;
 }
 
-/* "View.MemoryView":1247
+/* "View.MemoryView":1252
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  * cdef int _err_extents(int i, Py_ssize_t extent1,             # <<<<<<<<<<<<<<
@@ -21812,20 +21867,20 @@ static int __pyx_memoryview_err_extents(int __pyx_v_i, Py_ssize_t __pyx_v_extent
   #endif
   __Pyx_RefNannySetupContext("_err_extents", 0);
 
-  /* "View.MemoryView":1250
+  /* "View.MemoryView":1255
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  *                                                         (i, extent1, extent2))             # <<<<<<<<<<<<<<
  * 
  * @cname('__pyx_memoryview_err_dim')
  */
-  __pyx_t_1 = __Pyx_PyInt_From_int(__pyx_v_i); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1250, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyInt_From_int(__pyx_v_i); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1255, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyInt_FromSsize_t(__pyx_v_extent1); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1250, __pyx_L1_error)
+  __pyx_t_2 = PyInt_FromSsize_t(__pyx_v_extent1); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1255, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
-  __pyx_t_3 = PyInt_FromSsize_t(__pyx_v_extent2); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1250, __pyx_L1_error)
+  __pyx_t_3 = PyInt_FromSsize_t(__pyx_v_extent2); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1255, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_3);
-  __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 1250, __pyx_L1_error)
+  __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 1255, __pyx_L1_error)
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@@ -21837,24 +21892,24 @@ static int __pyx_memoryview_err_extents(int __pyx_v_i, Py_ssize_t __pyx_v_extent
   __pyx_t_2 = 0;
   __pyx_t_3 = 0;
 
-  /* "View.MemoryView":1249
+  /* "View.MemoryView":1254
  * cdef int _err_extents(int i, Py_ssize_t extent1,
  *                              Py_ssize_t extent2) except -1 with gil:
  *     raise ValueError("got differing extents in dimension %d (got %d and %d)" %             # <<<<<<<<<<<<<<
  *                                                         (i, extent1, extent2))
  * 
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-  __pyx_t_3 = __Pyx_PyString_Format(__pyx_kp_s_got_differing_extents_in_dimensi, __pyx_t_4); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1249, __pyx_L1_error)
+  __pyx_t_3 = __Pyx_PyString_Format(__pyx_kp_s_got_differing_extents_in_dimensi, __pyx_t_4); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1254, __pyx_L1_error)
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-  __pyx_t_4 = __Pyx_PyObject_CallOneArg(__pyx_builtin_ValueError, __pyx_t_3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 1249, __pyx_L1_error)
+  __pyx_t_4 = __Pyx_PyObject_CallOneArg(__pyx_builtin_ValueError, __pyx_t_3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 1254, __pyx_L1_error)
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   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
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-  __PYX_ERR(1, 1249, __pyx_L1_error)
+  __PYX_ERR(1, 1254, __pyx_L1_error)
 
-  /* "View.MemoryView":1247
+  /* "View.MemoryView":1252
  * 
  * @cname('__pyx_memoryview_err_extents')
  * cdef int _err_extents(int i, Py_ssize_t extent1,             # <<<<<<<<<<<<<<
@@ -21877,7 +21932,7 @@ static int __pyx_memoryview_err_extents(int __pyx_v_i, Py_ssize_t __pyx_v_extent
   return __pyx_r;
 }
 
-/* "View.MemoryView":1253
+/* "View.MemoryView":1258
  * 
  * @cname('__pyx_memoryview_err_dim')
  * cdef int _err_dim(object error, char *msg, int dim) except -1 with gil:             # <<<<<<<<<<<<<<
@@ -21898,18 +21953,18 @@ static int __pyx_memoryview_err_dim(PyObject *__pyx_v_error, char *__pyx_v_msg,
   __Pyx_RefNannySetupContext("_err_dim", 0);
   __Pyx_INCREF(__pyx_v_error);
 
-  /* "View.MemoryView":1254
+  /* "View.MemoryView":1259
  * @cname('__pyx_memoryview_err_dim')
  * cdef int _err_dim(object error, char *msg, int dim) except -1 with gil:
  *     raise error(msg.decode('ascii') % dim)             # <<<<<<<<<<<<<<
  * 
  * @cname('__pyx_memoryview_err')
  */
-  __pyx_t_2 = __Pyx_decode_c_string(__pyx_v_msg, 0, strlen(__pyx_v_msg), NULL, NULL, PyUnicode_DecodeASCII); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1254, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_decode_c_string(__pyx_v_msg, 0, strlen(__pyx_v_msg), NULL, NULL, PyUnicode_DecodeASCII); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1259, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
-  __pyx_t_3 = __Pyx_PyInt_From_int(__pyx_v_dim); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1254, __pyx_L1_error)
+  __pyx_t_3 = __Pyx_PyInt_From_int(__pyx_v_dim); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1259, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_3);
-  __pyx_t_4 = PyUnicode_Format(__pyx_t_2, __pyx_t_3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 1254, __pyx_L1_error)
+  __pyx_t_4 = PyUnicode_Format(__pyx_t_2, __pyx_t_3); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 1259, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_4);
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
@@ -21927,14 +21982,14 @@ static int __pyx_memoryview_err_dim(PyObject *__pyx_v_error, char *__pyx_v_msg,
   __pyx_t_1 = (__pyx_t_2) ? __Pyx_PyObject_Call2Args(__pyx_t_3, __pyx_t_2, __pyx_t_4) : __Pyx_PyObject_CallOneArg(__pyx_t_3, __pyx_t_4);
   __Pyx_XDECREF(__pyx_t_2); __pyx_t_2 = 0;
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-  if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1254, __pyx_L1_error)
+  if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1259, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
   __Pyx_Raise(__pyx_t_1, 0, 0, 0);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __PYX_ERR(1, 1254, __pyx_L1_error)
+  __PYX_ERR(1, 1259, __pyx_L1_error)
 
-  /* "View.MemoryView":1253
+  /* "View.MemoryView":1258
  * 
  * @cname('__pyx_memoryview_err_dim')
  * cdef int _err_dim(object error, char *msg, int dim) except -1 with gil:             # <<<<<<<<<<<<<<
@@ -21958,7 +22013,7 @@ static int __pyx_memoryview_err_dim(PyObject *__pyx_v_error, char *__pyx_v_msg,
   return __pyx_r;
 }
 
-/* "View.MemoryView":1257
+/* "View.MemoryView":1262
  * 
  * @cname('__pyx_memoryview_err')
  * cdef int _err(object error, char *msg) except -1 with gil:             # <<<<<<<<<<<<<<
@@ -21980,7 +22035,7 @@ static int __pyx_memoryview_err(PyObject *__pyx_v_error, char *__pyx_v_msg) {
   __Pyx_RefNannySetupContext("_err", 0);
   __Pyx_INCREF(__pyx_v_error);
 
-  /* "View.MemoryView":1258
+  /* "View.MemoryView":1263
  * @cname('__pyx_memoryview_err')
  * cdef int _err(object error, char *msg) except -1 with gil:
  *     if msg != NULL:             # <<<<<<<<<<<<<<
@@ -21990,14 +22045,14 @@ static int __pyx_memoryview_err(PyObject *__pyx_v_error, char *__pyx_v_msg) {
   __pyx_t_1 = ((__pyx_v_msg != NULL) != 0);
   if (unlikely(__pyx_t_1)) {
 
-    /* "View.MemoryView":1259
+    /* "View.MemoryView":1264
  * cdef int _err(object error, char *msg) except -1 with gil:
  *     if msg != NULL:
  *         raise error(msg.decode('ascii'))             # <<<<<<<<<<<<<<
  *     else:
  *         raise error
  */
-    __pyx_t_3 = __Pyx_decode_c_string(__pyx_v_msg, 0, strlen(__pyx_v_msg), NULL, NULL, PyUnicode_DecodeASCII); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1259, __pyx_L1_error)
+    __pyx_t_3 = __Pyx_decode_c_string(__pyx_v_msg, 0, strlen(__pyx_v_msg), NULL, NULL, PyUnicode_DecodeASCII); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 1264, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_INCREF(__pyx_v_error);
     __pyx_t_4 = __pyx_v_error; __pyx_t_5 = NULL;
@@ -22013,14 +22068,14 @@ static int __pyx_memoryview_err(PyObject *__pyx_v_error, char *__pyx_v_msg) {
     __pyx_t_2 = (__pyx_t_5) ? __Pyx_PyObject_Call2Args(__pyx_t_4, __pyx_t_5, __pyx_t_3) : __Pyx_PyObject_CallOneArg(__pyx_t_4, __pyx_t_3);
     __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0;
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1259, __pyx_L1_error)
+    if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 1264, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     __Pyx_Raise(__pyx_t_2, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __PYX_ERR(1, 1259, __pyx_L1_error)
+    __PYX_ERR(1, 1264, __pyx_L1_error)
 
-    /* "View.MemoryView":1258
+    /* "View.MemoryView":1263
  * @cname('__pyx_memoryview_err')
  * cdef int _err(object error, char *msg) except -1 with gil:
  *     if msg != NULL:             # <<<<<<<<<<<<<<
@@ -22029,7 +22084,7 @@ static int __pyx_memoryview_err(PyObject *__pyx_v_error, char *__pyx_v_msg) {
  */
   }
 
-  /* "View.MemoryView":1261
+  /* "View.MemoryView":1266
  *         raise error(msg.decode('ascii'))
  *     else:
  *         raise error             # <<<<<<<<<<<<<<
@@ -22038,10 +22093,10 @@ static int __pyx_memoryview_err(PyObject *__pyx_v_error, char *__pyx_v_msg) {
  */
   /*else*/ {
     __Pyx_Raise(__pyx_v_error, 0, 0, 0);
-    __PYX_ERR(1, 1261, __pyx_L1_error)
+    __PYX_ERR(1, 1266, __pyx_L1_error)
   }
 
-  /* "View.MemoryView":1257
+  /* "View.MemoryView":1262
  * 
  * @cname('__pyx_memoryview_err')
  * cdef int _err(object error, char *msg) except -1 with gil:             # <<<<<<<<<<<<<<
@@ -22065,7 +22120,7 @@ static int __pyx_memoryview_err(PyObject *__pyx_v_error, char *__pyx_v_msg) {
   return __pyx_r;
 }
 
-/* "View.MemoryView":1264
+/* "View.MemoryView":1269
  * 
  * @cname('__pyx_memoryview_copy_contents')
  * cdef int memoryview_copy_contents(__Pyx_memviewslice src,             # <<<<<<<<<<<<<<
@@ -22092,7 +22147,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   void *__pyx_t_7;
   int __pyx_t_8;
 
-  /* "View.MemoryView":1272
+  /* "View.MemoryView":1277
  *     Check for overlapping memory and verify the shapes.
  *     """
  *     cdef void *tmpdata = NULL             # <<<<<<<<<<<<<<
@@ -22101,7 +22156,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   __pyx_v_tmpdata = NULL;
 
-  /* "View.MemoryView":1273
+  /* "View.MemoryView":1278
  *     """
  *     cdef void *tmpdata = NULL
  *     cdef size_t itemsize = src.memview.view.itemsize             # <<<<<<<<<<<<<<
@@ -22111,7 +22166,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   __pyx_t_1 = __pyx_v_src.memview->view.itemsize;
   __pyx_v_itemsize = __pyx_t_1;
 
-  /* "View.MemoryView":1275
+  /* "View.MemoryView":1280
  *     cdef size_t itemsize = src.memview.view.itemsize
  *     cdef int i
  *     cdef char order = get_best_order(&src, src_ndim)             # <<<<<<<<<<<<<<
@@ -22120,7 +22175,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   __pyx_v_order = __pyx_get_best_slice_order((&__pyx_v_src), __pyx_v_src_ndim);
 
-  /* "View.MemoryView":1276
+  /* "View.MemoryView":1281
  *     cdef int i
  *     cdef char order = get_best_order(&src, src_ndim)
  *     cdef bint broadcasting = False             # <<<<<<<<<<<<<<
@@ -22129,7 +22184,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   __pyx_v_broadcasting = 0;
 
-  /* "View.MemoryView":1277
+  /* "View.MemoryView":1282
  *     cdef char order = get_best_order(&src, src_ndim)
  *     cdef bint broadcasting = False
  *     cdef bint direct_copy = False             # <<<<<<<<<<<<<<
@@ -22138,7 +22193,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   __pyx_v_direct_copy = 0;
 
-  /* "View.MemoryView":1280
+  /* "View.MemoryView":1285
  *     cdef __Pyx_memviewslice tmp
  * 
  *     if src_ndim < dst_ndim:             # <<<<<<<<<<<<<<
@@ -22148,7 +22203,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   __pyx_t_2 = ((__pyx_v_src_ndim < __pyx_v_dst_ndim) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1281
+    /* "View.MemoryView":1286
  * 
  *     if src_ndim < dst_ndim:
  *         broadcast_leading(&src, src_ndim, dst_ndim)             # <<<<<<<<<<<<<<
@@ -22157,7 +22212,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
     __pyx_memoryview_broadcast_leading((&__pyx_v_src), __pyx_v_src_ndim, __pyx_v_dst_ndim);
 
-    /* "View.MemoryView":1280
+    /* "View.MemoryView":1285
  *     cdef __Pyx_memviewslice tmp
  * 
  *     if src_ndim < dst_ndim:             # <<<<<<<<<<<<<<
@@ -22167,7 +22222,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":1282
+  /* "View.MemoryView":1287
  *     if src_ndim < dst_ndim:
  *         broadcast_leading(&src, src_ndim, dst_ndim)
  *     elif dst_ndim < src_ndim:             # <<<<<<<<<<<<<<
@@ -22177,7 +22232,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   __pyx_t_2 = ((__pyx_v_dst_ndim < __pyx_v_src_ndim) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1283
+    /* "View.MemoryView":1288
  *         broadcast_leading(&src, src_ndim, dst_ndim)
  *     elif dst_ndim < src_ndim:
  *         broadcast_leading(&dst, dst_ndim, src_ndim)             # <<<<<<<<<<<<<<
@@ -22186,7 +22241,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
     __pyx_memoryview_broadcast_leading((&__pyx_v_dst), __pyx_v_dst_ndim, __pyx_v_src_ndim);
 
-    /* "View.MemoryView":1282
+    /* "View.MemoryView":1287
  *     if src_ndim < dst_ndim:
  *         broadcast_leading(&src, src_ndim, dst_ndim)
  *     elif dst_ndim < src_ndim:             # <<<<<<<<<<<<<<
@@ -22196,7 +22251,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":1285
+  /* "View.MemoryView":1290
  *         broadcast_leading(&dst, dst_ndim, src_ndim)
  * 
  *     cdef int ndim = max(src_ndim, dst_ndim)             # <<<<<<<<<<<<<<
@@ -22212,7 +22267,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   }
   __pyx_v_ndim = __pyx_t_5;
 
-  /* "View.MemoryView":1287
+  /* "View.MemoryView":1292
  *     cdef int ndim = max(src_ndim, dst_ndim)
  * 
  *     for i in range(ndim):             # <<<<<<<<<<<<<<
@@ -22224,7 +22279,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_i = __pyx_t_4;
 
-    /* "View.MemoryView":1288
+    /* "View.MemoryView":1293
  * 
  *     for i in range(ndim):
  *         if src.shape[i] != dst.shape[i]:             # <<<<<<<<<<<<<<
@@ -22234,7 +22289,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     __pyx_t_2 = (((__pyx_v_src.shape[__pyx_v_i]) != (__pyx_v_dst.shape[__pyx_v_i])) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1289
+      /* "View.MemoryView":1294
  *     for i in range(ndim):
  *         if src.shape[i] != dst.shape[i]:
  *             if src.shape[i] == 1:             # <<<<<<<<<<<<<<
@@ -22244,7 +22299,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
       __pyx_t_2 = (((__pyx_v_src.shape[__pyx_v_i]) == 1) != 0);
       if (__pyx_t_2) {
 
-        /* "View.MemoryView":1290
+        /* "View.MemoryView":1295
  *         if src.shape[i] != dst.shape[i]:
  *             if src.shape[i] == 1:
  *                 broadcasting = True             # <<<<<<<<<<<<<<
@@ -22253,7 +22308,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
         __pyx_v_broadcasting = 1;
 
-        /* "View.MemoryView":1291
+        /* "View.MemoryView":1296
  *             if src.shape[i] == 1:
  *                 broadcasting = True
  *                 src.strides[i] = 0             # <<<<<<<<<<<<<<
@@ -22262,7 +22317,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
         (__pyx_v_src.strides[__pyx_v_i]) = 0;
 
-        /* "View.MemoryView":1289
+        /* "View.MemoryView":1294
  *     for i in range(ndim):
  *         if src.shape[i] != dst.shape[i]:
  *             if src.shape[i] == 1:             # <<<<<<<<<<<<<<
@@ -22272,7 +22327,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
         goto __pyx_L7;
       }
 
-      /* "View.MemoryView":1293
+      /* "View.MemoryView":1298
  *                 src.strides[i] = 0
  *             else:
  *                 _err_extents(i, dst.shape[i], src.shape[i])             # <<<<<<<<<<<<<<
@@ -22280,11 +22335,11 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  *         if src.suboffsets[i] >= 0:
  */
       /*else*/ {
-        __pyx_t_6 = __pyx_memoryview_err_extents(__pyx_v_i, (__pyx_v_dst.shape[__pyx_v_i]), (__pyx_v_src.shape[__pyx_v_i])); if (unlikely(__pyx_t_6 == ((int)-1))) __PYX_ERR(1, 1293, __pyx_L1_error)
+        __pyx_t_6 = __pyx_memoryview_err_extents(__pyx_v_i, (__pyx_v_dst.shape[__pyx_v_i]), (__pyx_v_src.shape[__pyx_v_i])); if (unlikely(__pyx_t_6 == ((int)-1))) __PYX_ERR(1, 1298, __pyx_L1_error)
       }
       __pyx_L7:;
 
-      /* "View.MemoryView":1288
+      /* "View.MemoryView":1293
  * 
  *     for i in range(ndim):
  *         if src.shape[i] != dst.shape[i]:             # <<<<<<<<<<<<<<
@@ -22293,7 +22348,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
     }
 
-    /* "View.MemoryView":1295
+    /* "View.MemoryView":1300
  *                 _err_extents(i, dst.shape[i], src.shape[i])
  * 
  *         if src.suboffsets[i] >= 0:             # <<<<<<<<<<<<<<
@@ -22303,16 +22358,16 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     __pyx_t_2 = (((__pyx_v_src.suboffsets[__pyx_v_i]) >= 0) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1296
+      /* "View.MemoryView":1301
  * 
  *         if src.suboffsets[i] >= 0:
  *             _err_dim(ValueError, "Dimension %d is not direct", i)             # <<<<<<<<<<<<<<
  * 
  *     if slices_overlap(&src, &dst, ndim, itemsize):
  */
-      __pyx_t_6 = __pyx_memoryview_err_dim(__pyx_builtin_ValueError, ((char *)"Dimension %d is not direct"), __pyx_v_i); if (unlikely(__pyx_t_6 == ((int)-1))) __PYX_ERR(1, 1296, __pyx_L1_error)
+      __pyx_t_6 = __pyx_memoryview_err_dim(__pyx_builtin_ValueError, ((char *)"Dimension %d is not direct"), __pyx_v_i); if (unlikely(__pyx_t_6 == ((int)-1))) __PYX_ERR(1, 1301, __pyx_L1_error)
 
-      /* "View.MemoryView":1295
+      /* "View.MemoryView":1300
  *                 _err_extents(i, dst.shape[i], src.shape[i])
  * 
  *         if src.suboffsets[i] >= 0:             # <<<<<<<<<<<<<<
@@ -22322,7 +22377,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     }
   }
 
-  /* "View.MemoryView":1298
+  /* "View.MemoryView":1303
  *             _err_dim(ValueError, "Dimension %d is not direct", i)
  * 
  *     if slices_overlap(&src, &dst, ndim, itemsize):             # <<<<<<<<<<<<<<
@@ -22332,7 +22387,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   __pyx_t_2 = (__pyx_slices_overlap((&__pyx_v_src), (&__pyx_v_dst), __pyx_v_ndim, __pyx_v_itemsize) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1300
+    /* "View.MemoryView":1305
  *     if slices_overlap(&src, &dst, ndim, itemsize):
  * 
  *         if not slice_is_contig(src, order, ndim):             # <<<<<<<<<<<<<<
@@ -22342,7 +22397,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     __pyx_t_2 = ((!(__pyx_memviewslice_is_contig(__pyx_v_src, __pyx_v_order, __pyx_v_ndim) != 0)) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1301
+      /* "View.MemoryView":1306
  * 
  *         if not slice_is_contig(src, order, ndim):
  *             order = get_best_order(&dst, ndim)             # <<<<<<<<<<<<<<
@@ -22351,7 +22406,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
       __pyx_v_order = __pyx_get_best_slice_order((&__pyx_v_dst), __pyx_v_ndim);
 
-      /* "View.MemoryView":1300
+      /* "View.MemoryView":1305
  *     if slices_overlap(&src, &dst, ndim, itemsize):
  * 
  *         if not slice_is_contig(src, order, ndim):             # <<<<<<<<<<<<<<
@@ -22360,17 +22415,17 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
     }
 
-    /* "View.MemoryView":1303
+    /* "View.MemoryView":1308
  *             order = get_best_order(&dst, ndim)
  * 
  *         tmpdata = copy_data_to_temp(&src, &tmp, order, ndim)             # <<<<<<<<<<<<<<
  *         src = tmp
  * 
  */
-    __pyx_t_7 = __pyx_memoryview_copy_data_to_temp((&__pyx_v_src), (&__pyx_v_tmp), __pyx_v_order, __pyx_v_ndim); if (unlikely(__pyx_t_7 == ((void *)NULL))) __PYX_ERR(1, 1303, __pyx_L1_error)
+    __pyx_t_7 = __pyx_memoryview_copy_data_to_temp((&__pyx_v_src), (&__pyx_v_tmp), __pyx_v_order, __pyx_v_ndim); if (unlikely(__pyx_t_7 == ((void *)NULL))) __PYX_ERR(1, 1308, __pyx_L1_error)
     __pyx_v_tmpdata = __pyx_t_7;
 
-    /* "View.MemoryView":1304
+    /* "View.MemoryView":1309
  * 
  *         tmpdata = copy_data_to_temp(&src, &tmp, order, ndim)
  *         src = tmp             # <<<<<<<<<<<<<<
@@ -22379,7 +22434,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
     __pyx_v_src = __pyx_v_tmp;
 
-    /* "View.MemoryView":1298
+    /* "View.MemoryView":1303
  *             _err_dim(ValueError, "Dimension %d is not direct", i)
  * 
  *     if slices_overlap(&src, &dst, ndim, itemsize):             # <<<<<<<<<<<<<<
@@ -22388,7 +22443,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   }
 
-  /* "View.MemoryView":1306
+  /* "View.MemoryView":1311
  *         src = tmp
  * 
  *     if not broadcasting:             # <<<<<<<<<<<<<<
@@ -22398,7 +22453,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   __pyx_t_2 = ((!(__pyx_v_broadcasting != 0)) != 0);
   if (__pyx_t_2) {
 
-    /* "View.MemoryView":1309
+    /* "View.MemoryView":1314
  * 
  * 
  *         if slice_is_contig(src, 'C', ndim):             # <<<<<<<<<<<<<<
@@ -22408,7 +22463,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     __pyx_t_2 = (__pyx_memviewslice_is_contig(__pyx_v_src, 'C', __pyx_v_ndim) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1310
+      /* "View.MemoryView":1315
  * 
  *         if slice_is_contig(src, 'C', ndim):
  *             direct_copy = slice_is_contig(dst, 'C', ndim)             # <<<<<<<<<<<<<<
@@ -22417,7 +22472,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
       __pyx_v_direct_copy = __pyx_memviewslice_is_contig(__pyx_v_dst, 'C', __pyx_v_ndim);
 
-      /* "View.MemoryView":1309
+      /* "View.MemoryView":1314
  * 
  * 
  *         if slice_is_contig(src, 'C', ndim):             # <<<<<<<<<<<<<<
@@ -22427,7 +22482,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
       goto __pyx_L12;
     }
 
-    /* "View.MemoryView":1311
+    /* "View.MemoryView":1316
  *         if slice_is_contig(src, 'C', ndim):
  *             direct_copy = slice_is_contig(dst, 'C', ndim)
  *         elif slice_is_contig(src, 'F', ndim):             # <<<<<<<<<<<<<<
@@ -22437,7 +22492,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     __pyx_t_2 = (__pyx_memviewslice_is_contig(__pyx_v_src, 'F', __pyx_v_ndim) != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1312
+      /* "View.MemoryView":1317
  *             direct_copy = slice_is_contig(dst, 'C', ndim)
  *         elif slice_is_contig(src, 'F', ndim):
  *             direct_copy = slice_is_contig(dst, 'F', ndim)             # <<<<<<<<<<<<<<
@@ -22446,7 +22501,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
       __pyx_v_direct_copy = __pyx_memviewslice_is_contig(__pyx_v_dst, 'F', __pyx_v_ndim);
 
-      /* "View.MemoryView":1311
+      /* "View.MemoryView":1316
  *         if slice_is_contig(src, 'C', ndim):
  *             direct_copy = slice_is_contig(dst, 'C', ndim)
  *         elif slice_is_contig(src, 'F', ndim):             # <<<<<<<<<<<<<<
@@ -22456,7 +22511,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     }
     __pyx_L12:;
 
-    /* "View.MemoryView":1314
+    /* "View.MemoryView":1319
  *             direct_copy = slice_is_contig(dst, 'F', ndim)
  * 
  *         if direct_copy:             # <<<<<<<<<<<<<<
@@ -22466,7 +22521,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
     __pyx_t_2 = (__pyx_v_direct_copy != 0);
     if (__pyx_t_2) {
 
-      /* "View.MemoryView":1316
+      /* "View.MemoryView":1321
  *         if direct_copy:
  * 
  *             refcount_copying(&dst, dtype_is_object, ndim, False)             # <<<<<<<<<<<<<<
@@ -22475,7 +22530,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
       __pyx_memoryview_refcount_copying((&__pyx_v_dst), __pyx_v_dtype_is_object, __pyx_v_ndim, 0);
 
-      /* "View.MemoryView":1317
+      /* "View.MemoryView":1322
  * 
  *             refcount_copying(&dst, dtype_is_object, ndim, False)
  *             memcpy(dst.data, src.data, slice_get_size(&src, ndim))             # <<<<<<<<<<<<<<
@@ -22484,7 +22539,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
       (void)(memcpy(__pyx_v_dst.data, __pyx_v_src.data, __pyx_memoryview_slice_get_size((&__pyx_v_src), __pyx_v_ndim)));
 
-      /* "View.MemoryView":1318
+      /* "View.MemoryView":1323
  *             refcount_copying(&dst, dtype_is_object, ndim, False)
  *             memcpy(dst.data, src.data, slice_get_size(&src, ndim))
  *             refcount_copying(&dst, dtype_is_object, ndim, True)             # <<<<<<<<<<<<<<
@@ -22493,7 +22548,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
       __pyx_memoryview_refcount_copying((&__pyx_v_dst), __pyx_v_dtype_is_object, __pyx_v_ndim, 1);
 
-      /* "View.MemoryView":1319
+      /* "View.MemoryView":1324
  *             memcpy(dst.data, src.data, slice_get_size(&src, ndim))
  *             refcount_copying(&dst, dtype_is_object, ndim, True)
  *             free(tmpdata)             # <<<<<<<<<<<<<<
@@ -22502,7 +22557,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
       free(__pyx_v_tmpdata);
 
-      /* "View.MemoryView":1320
+      /* "View.MemoryView":1325
  *             refcount_copying(&dst, dtype_is_object, ndim, True)
  *             free(tmpdata)
  *             return 0             # <<<<<<<<<<<<<<
@@ -22512,7 +22567,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
       __pyx_r = 0;
       goto __pyx_L0;
 
-      /* "View.MemoryView":1314
+      /* "View.MemoryView":1319
  *             direct_copy = slice_is_contig(dst, 'F', ndim)
  * 
  *         if direct_copy:             # <<<<<<<<<<<<<<
@@ -22521,7 +22576,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
     }
 
-    /* "View.MemoryView":1306
+    /* "View.MemoryView":1311
  *         src = tmp
  * 
  *     if not broadcasting:             # <<<<<<<<<<<<<<
@@ -22530,7 +22585,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   }
 
-  /* "View.MemoryView":1322
+  /* "View.MemoryView":1327
  *             return 0
  * 
  *     if order == 'F' == get_best_order(&dst, ndim):             # <<<<<<<<<<<<<<
@@ -22544,25 +22599,25 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   __pyx_t_8 = (__pyx_t_2 != 0);
   if (__pyx_t_8) {
 
-    /* "View.MemoryView":1325
+    /* "View.MemoryView":1330
  * 
  * 
  *         transpose_memslice(&src)             # <<<<<<<<<<<<<<
  *         transpose_memslice(&dst)
  * 
  */
-    __pyx_t_5 = __pyx_memslice_transpose((&__pyx_v_src)); if (unlikely(__pyx_t_5 == ((int)0))) __PYX_ERR(1, 1325, __pyx_L1_error)
+    __pyx_t_5 = __pyx_memslice_transpose((&__pyx_v_src)); if (unlikely(__pyx_t_5 == ((int)0))) __PYX_ERR(1, 1330, __pyx_L1_error)
 
-    /* "View.MemoryView":1326
+    /* "View.MemoryView":1331
  * 
  *         transpose_memslice(&src)
  *         transpose_memslice(&dst)             # <<<<<<<<<<<<<<
  * 
  *     refcount_copying(&dst, dtype_is_object, ndim, False)
  */
-    __pyx_t_5 = __pyx_memslice_transpose((&__pyx_v_dst)); if (unlikely(__pyx_t_5 == ((int)0))) __PYX_ERR(1, 1326, __pyx_L1_error)
+    __pyx_t_5 = __pyx_memslice_transpose((&__pyx_v_dst)); if (unlikely(__pyx_t_5 == ((int)0))) __PYX_ERR(1, 1331, __pyx_L1_error)
 
-    /* "View.MemoryView":1322
+    /* "View.MemoryView":1327
  *             return 0
  * 
  *     if order == 'F' == get_best_order(&dst, ndim):             # <<<<<<<<<<<<<<
@@ -22571,7 +22626,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   }
 
-  /* "View.MemoryView":1328
+  /* "View.MemoryView":1333
  *         transpose_memslice(&dst)
  * 
  *     refcount_copying(&dst, dtype_is_object, ndim, False)             # <<<<<<<<<<<<<<
@@ -22580,7 +22635,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   __pyx_memoryview_refcount_copying((&__pyx_v_dst), __pyx_v_dtype_is_object, __pyx_v_ndim, 0);
 
-  /* "View.MemoryView":1329
+  /* "View.MemoryView":1334
  * 
  *     refcount_copying(&dst, dtype_is_object, ndim, False)
  *     copy_strided_to_strided(&src, &dst, ndim, itemsize)             # <<<<<<<<<<<<<<
@@ -22589,7 +22644,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   copy_strided_to_strided((&__pyx_v_src), (&__pyx_v_dst), __pyx_v_ndim, __pyx_v_itemsize);
 
-  /* "View.MemoryView":1330
+  /* "View.MemoryView":1335
  *     refcount_copying(&dst, dtype_is_object, ndim, False)
  *     copy_strided_to_strided(&src, &dst, ndim, itemsize)
  *     refcount_copying(&dst, dtype_is_object, ndim, True)             # <<<<<<<<<<<<<<
@@ -22598,7 +22653,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   __pyx_memoryview_refcount_copying((&__pyx_v_dst), __pyx_v_dtype_is_object, __pyx_v_ndim, 1);
 
-  /* "View.MemoryView":1332
+  /* "View.MemoryView":1337
  *     refcount_copying(&dst, dtype_is_object, ndim, True)
  * 
  *     free(tmpdata)             # <<<<<<<<<<<<<<
@@ -22607,7 +22662,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
  */
   free(__pyx_v_tmpdata);
 
-  /* "View.MemoryView":1333
+  /* "View.MemoryView":1338
  * 
  *     free(tmpdata)
  *     return 0             # <<<<<<<<<<<<<<
@@ -22617,7 +22672,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   __pyx_r = 0;
   goto __pyx_L0;
 
-  /* "View.MemoryView":1264
+  /* "View.MemoryView":1269
  * 
  * @cname('__pyx_memoryview_copy_contents')
  * cdef int memoryview_copy_contents(__Pyx_memviewslice src,             # <<<<<<<<<<<<<<
@@ -22641,7 +22696,7 @@ static int __pyx_memoryview_copy_contents(__Pyx_memviewslice __pyx_v_src, __Pyx_
   return __pyx_r;
 }
 
-/* "View.MemoryView":1336
+/* "View.MemoryView":1341
  * 
  * @cname('__pyx_memoryview_broadcast_leading')
  * cdef void broadcast_leading(__Pyx_memviewslice *mslice,             # <<<<<<<<<<<<<<
@@ -22656,7 +22711,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
   int __pyx_t_2;
   int __pyx_t_3;
 
-  /* "View.MemoryView":1340
+  /* "View.MemoryView":1345
  *                             int ndim_other) nogil:
  *     cdef int i
  *     cdef int offset = ndim_other - ndim             # <<<<<<<<<<<<<<
@@ -22665,7 +22720,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
  */
   __pyx_v_offset = (__pyx_v_ndim_other - __pyx_v_ndim);
 
-  /* "View.MemoryView":1342
+  /* "View.MemoryView":1347
  *     cdef int offset = ndim_other - ndim
  * 
  *     for i in range(ndim - 1, -1, -1):             # <<<<<<<<<<<<<<
@@ -22675,7 +22730,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
   for (__pyx_t_1 = (__pyx_v_ndim - 1); __pyx_t_1 > -1; __pyx_t_1-=1) {
     __pyx_v_i = __pyx_t_1;
 
-    /* "View.MemoryView":1343
+    /* "View.MemoryView":1348
  * 
  *     for i in range(ndim - 1, -1, -1):
  *         mslice.shape[i + offset] = mslice.shape[i]             # <<<<<<<<<<<<<<
@@ -22684,7 +22739,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
  */
     (__pyx_v_mslice->shape[(__pyx_v_i + __pyx_v_offset)]) = (__pyx_v_mslice->shape[__pyx_v_i]);
 
-    /* "View.MemoryView":1344
+    /* "View.MemoryView":1349
  *     for i in range(ndim - 1, -1, -1):
  *         mslice.shape[i + offset] = mslice.shape[i]
  *         mslice.strides[i + offset] = mslice.strides[i]             # <<<<<<<<<<<<<<
@@ -22693,7 +22748,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
  */
     (__pyx_v_mslice->strides[(__pyx_v_i + __pyx_v_offset)]) = (__pyx_v_mslice->strides[__pyx_v_i]);
 
-    /* "View.MemoryView":1345
+    /* "View.MemoryView":1350
  *         mslice.shape[i + offset] = mslice.shape[i]
  *         mslice.strides[i + offset] = mslice.strides[i]
  *         mslice.suboffsets[i + offset] = mslice.suboffsets[i]             # <<<<<<<<<<<<<<
@@ -22703,7 +22758,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
     (__pyx_v_mslice->suboffsets[(__pyx_v_i + __pyx_v_offset)]) = (__pyx_v_mslice->suboffsets[__pyx_v_i]);
   }
 
-  /* "View.MemoryView":1347
+  /* "View.MemoryView":1352
  *         mslice.suboffsets[i + offset] = mslice.suboffsets[i]
  * 
  *     for i in range(offset):             # <<<<<<<<<<<<<<
@@ -22715,7 +22770,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "View.MemoryView":1348
+    /* "View.MemoryView":1353
  * 
  *     for i in range(offset):
  *         mslice.shape[i] = 1             # <<<<<<<<<<<<<<
@@ -22724,7 +22779,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
  */
     (__pyx_v_mslice->shape[__pyx_v_i]) = 1;
 
-    /* "View.MemoryView":1349
+    /* "View.MemoryView":1354
  *     for i in range(offset):
  *         mslice.shape[i] = 1
  *         mslice.strides[i] = mslice.strides[0]             # <<<<<<<<<<<<<<
@@ -22733,7 +22788,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
  */
     (__pyx_v_mslice->strides[__pyx_v_i]) = (__pyx_v_mslice->strides[0]);
 
-    /* "View.MemoryView":1350
+    /* "View.MemoryView":1355
  *         mslice.shape[i] = 1
  *         mslice.strides[i] = mslice.strides[0]
  *         mslice.suboffsets[i] = -1             # <<<<<<<<<<<<<<
@@ -22743,7 +22798,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
     (__pyx_v_mslice->suboffsets[__pyx_v_i]) = -1L;
   }
 
-  /* "View.MemoryView":1336
+  /* "View.MemoryView":1341
  * 
  * @cname('__pyx_memoryview_broadcast_leading')
  * cdef void broadcast_leading(__Pyx_memviewslice *mslice,             # <<<<<<<<<<<<<<
@@ -22754,7 +22809,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
   /* function exit code */
 }
 
-/* "View.MemoryView":1358
+/* "View.MemoryView":1363
  * 
  * @cname('__pyx_memoryview_refcount_copying')
  * cdef void refcount_copying(__Pyx_memviewslice *dst, bint dtype_is_object,             # <<<<<<<<<<<<<<
@@ -22765,7 +22820,7 @@ static void __pyx_memoryview_broadcast_leading(__Pyx_memviewslice *__pyx_v_mslic
 static void __pyx_memoryview_refcount_copying(__Pyx_memviewslice *__pyx_v_dst, int __pyx_v_dtype_is_object, int __pyx_v_ndim, int __pyx_v_inc) {
   int __pyx_t_1;
 
-  /* "View.MemoryView":1362
+  /* "View.MemoryView":1367
  * 
  * 
  *     if dtype_is_object:             # <<<<<<<<<<<<<<
@@ -22775,7 +22830,7 @@ static void __pyx_memoryview_refcount_copying(__Pyx_memviewslice *__pyx_v_dst, i
   __pyx_t_1 = (__pyx_v_dtype_is_object != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":1363
+    /* "View.MemoryView":1368
  * 
  *     if dtype_is_object:
  *         refcount_objects_in_slice_with_gil(dst.data, dst.shape,             # <<<<<<<<<<<<<<
@@ -22784,7 +22839,7 @@ static void __pyx_memoryview_refcount_copying(__Pyx_memviewslice *__pyx_v_dst, i
  */
     __pyx_memoryview_refcount_objects_in_slice_with_gil(__pyx_v_dst->data, __pyx_v_dst->shape, __pyx_v_dst->strides, __pyx_v_ndim, __pyx_v_inc);
 
-    /* "View.MemoryView":1362
+    /* "View.MemoryView":1367
  * 
  * 
  *     if dtype_is_object:             # <<<<<<<<<<<<<<
@@ -22793,7 +22848,7 @@ static void __pyx_memoryview_refcount_copying(__Pyx_memviewslice *__pyx_v_dst, i
  */
   }
 
-  /* "View.MemoryView":1358
+  /* "View.MemoryView":1363
  * 
  * @cname('__pyx_memoryview_refcount_copying')
  * cdef void refcount_copying(__Pyx_memviewslice *dst, bint dtype_is_object,             # <<<<<<<<<<<<<<
@@ -22804,7 +22859,7 @@ static void __pyx_memoryview_refcount_copying(__Pyx_memviewslice *__pyx_v_dst, i
   /* function exit code */
 }
 
-/* "View.MemoryView":1367
+/* "View.MemoryView":1372
  * 
  * @cname('__pyx_memoryview_refcount_objects_in_slice_with_gil')
  * cdef void refcount_objects_in_slice_with_gil(char *data, Py_ssize_t *shape,             # <<<<<<<<<<<<<<
@@ -22819,7 +22874,7 @@ static void __pyx_memoryview_refcount_objects_in_slice_with_gil(char *__pyx_v_da
   #endif
   __Pyx_RefNannySetupContext("refcount_objects_in_slice_with_gil", 0);
 
-  /* "View.MemoryView":1370
+  /* "View.MemoryView":1375
  *                                              Py_ssize_t *strides, int ndim,
  *                                              bint inc) with gil:
  *     refcount_objects_in_slice(data, shape, strides, ndim, inc)             # <<<<<<<<<<<<<<
@@ -22828,7 +22883,7 @@ static void __pyx_memoryview_refcount_objects_in_slice_with_gil(char *__pyx_v_da
  */
   __pyx_memoryview_refcount_objects_in_slice(__pyx_v_data, __pyx_v_shape, __pyx_v_strides, __pyx_v_ndim, __pyx_v_inc);
 
-  /* "View.MemoryView":1367
+  /* "View.MemoryView":1372
  * 
  * @cname('__pyx_memoryview_refcount_objects_in_slice_with_gil')
  * cdef void refcount_objects_in_slice_with_gil(char *data, Py_ssize_t *shape,             # <<<<<<<<<<<<<<
@@ -22843,7 +22898,7 @@ static void __pyx_memoryview_refcount_objects_in_slice_with_gil(char *__pyx_v_da
   #endif
 }
 
-/* "View.MemoryView":1373
+/* "View.MemoryView":1378
  * 
  * @cname('__pyx_memoryview_refcount_objects_in_slice')
  * cdef void refcount_objects_in_slice(char *data, Py_ssize_t *shape,             # <<<<<<<<<<<<<<
@@ -22860,7 +22915,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
   int __pyx_t_4;
   __Pyx_RefNannySetupContext("refcount_objects_in_slice", 0);
 
-  /* "View.MemoryView":1377
+  /* "View.MemoryView":1382
  *     cdef Py_ssize_t i
  * 
  *     for i in range(shape[0]):             # <<<<<<<<<<<<<<
@@ -22872,7 +22927,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "View.MemoryView":1378
+    /* "View.MemoryView":1383
  * 
  *     for i in range(shape[0]):
  *         if ndim == 1:             # <<<<<<<<<<<<<<
@@ -22882,7 +22937,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
     __pyx_t_4 = ((__pyx_v_ndim == 1) != 0);
     if (__pyx_t_4) {
 
-      /* "View.MemoryView":1379
+      /* "View.MemoryView":1384
  *     for i in range(shape[0]):
  *         if ndim == 1:
  *             if inc:             # <<<<<<<<<<<<<<
@@ -22892,7 +22947,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
       __pyx_t_4 = (__pyx_v_inc != 0);
       if (__pyx_t_4) {
 
-        /* "View.MemoryView":1380
+        /* "View.MemoryView":1385
  *         if ndim == 1:
  *             if inc:
  *                 Py_INCREF((<PyObject **> data)[0])             # <<<<<<<<<<<<<<
@@ -22901,7 +22956,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
  */
         Py_INCREF((((PyObject **)__pyx_v_data)[0]));
 
-        /* "View.MemoryView":1379
+        /* "View.MemoryView":1384
  *     for i in range(shape[0]):
  *         if ndim == 1:
  *             if inc:             # <<<<<<<<<<<<<<
@@ -22911,7 +22966,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
         goto __pyx_L6;
       }
 
-      /* "View.MemoryView":1382
+      /* "View.MemoryView":1387
  *                 Py_INCREF((<PyObject **> data)[0])
  *             else:
  *                 Py_DECREF((<PyObject **> data)[0])             # <<<<<<<<<<<<<<
@@ -22923,7 +22978,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
       }
       __pyx_L6:;
 
-      /* "View.MemoryView":1378
+      /* "View.MemoryView":1383
  * 
  *     for i in range(shape[0]):
  *         if ndim == 1:             # <<<<<<<<<<<<<<
@@ -22933,7 +22988,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
       goto __pyx_L5;
     }
 
-    /* "View.MemoryView":1384
+    /* "View.MemoryView":1389
  *                 Py_DECREF((<PyObject **> data)[0])
  *         else:
  *             refcount_objects_in_slice(data, shape + 1, strides + 1,             # <<<<<<<<<<<<<<
@@ -22942,7 +22997,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
  */
     /*else*/ {
 
-      /* "View.MemoryView":1385
+      /* "View.MemoryView":1390
  *         else:
  *             refcount_objects_in_slice(data, shape + 1, strides + 1,
  *                                       ndim - 1, inc)             # <<<<<<<<<<<<<<
@@ -22953,7 +23008,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
     }
     __pyx_L5:;
 
-    /* "View.MemoryView":1387
+    /* "View.MemoryView":1392
  *                                       ndim - 1, inc)
  * 
  *         data += strides[0]             # <<<<<<<<<<<<<<
@@ -22963,7 +23018,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
     __pyx_v_data = (__pyx_v_data + (__pyx_v_strides[0]));
   }
 
-  /* "View.MemoryView":1373
+  /* "View.MemoryView":1378
  * 
  * @cname('__pyx_memoryview_refcount_objects_in_slice')
  * cdef void refcount_objects_in_slice(char *data, Py_ssize_t *shape,             # <<<<<<<<<<<<<<
@@ -22975,7 +23030,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
   __Pyx_RefNannyFinishContext();
 }
 
-/* "View.MemoryView":1393
+/* "View.MemoryView":1398
  * 
  * @cname('__pyx_memoryview_slice_assign_scalar')
  * cdef void slice_assign_scalar(__Pyx_memviewslice *dst, int ndim,             # <<<<<<<<<<<<<<
@@ -22985,7 +23040,7 @@ static void __pyx_memoryview_refcount_objects_in_slice(char *__pyx_v_data, Py_ss
 
 static void __pyx_memoryview_slice_assign_scalar(__Pyx_memviewslice *__pyx_v_dst, int __pyx_v_ndim, size_t __pyx_v_itemsize, void *__pyx_v_item, int __pyx_v_dtype_is_object) {
 
-  /* "View.MemoryView":1396
+  /* "View.MemoryView":1401
  *                               size_t itemsize, void *item,
  *                               bint dtype_is_object) nogil:
  *     refcount_copying(dst, dtype_is_object, ndim, False)             # <<<<<<<<<<<<<<
@@ -22994,7 +23049,7 @@ static void __pyx_memoryview_slice_assign_scalar(__Pyx_memviewslice *__pyx_v_dst
  */
   __pyx_memoryview_refcount_copying(__pyx_v_dst, __pyx_v_dtype_is_object, __pyx_v_ndim, 0);
 
-  /* "View.MemoryView":1397
+  /* "View.MemoryView":1402
  *                               bint dtype_is_object) nogil:
  *     refcount_copying(dst, dtype_is_object, ndim, False)
  *     _slice_assign_scalar(dst.data, dst.shape, dst.strides, ndim,             # <<<<<<<<<<<<<<
@@ -23003,7 +23058,7 @@ static void __pyx_memoryview_slice_assign_scalar(__Pyx_memviewslice *__pyx_v_dst
  */
   __pyx_memoryview__slice_assign_scalar(__pyx_v_dst->data, __pyx_v_dst->shape, __pyx_v_dst->strides, __pyx_v_ndim, __pyx_v_itemsize, __pyx_v_item);
 
-  /* "View.MemoryView":1399
+  /* "View.MemoryView":1404
  *     _slice_assign_scalar(dst.data, dst.shape, dst.strides, ndim,
  *                          itemsize, item)
  *     refcount_copying(dst, dtype_is_object, ndim, True)             # <<<<<<<<<<<<<<
@@ -23012,7 +23067,7 @@ static void __pyx_memoryview_slice_assign_scalar(__Pyx_memviewslice *__pyx_v_dst
  */
   __pyx_memoryview_refcount_copying(__pyx_v_dst, __pyx_v_dtype_is_object, __pyx_v_ndim, 1);
 
-  /* "View.MemoryView":1393
+  /* "View.MemoryView":1398
  * 
  * @cname('__pyx_memoryview_slice_assign_scalar')
  * cdef void slice_assign_scalar(__Pyx_memviewslice *dst, int ndim,             # <<<<<<<<<<<<<<
@@ -23023,7 +23078,7 @@ static void __pyx_memoryview_slice_assign_scalar(__Pyx_memviewslice *__pyx_v_dst
   /* function exit code */
 }
 
-/* "View.MemoryView":1403
+/* "View.MemoryView":1408
  * 
  * @cname('__pyx_memoryview__slice_assign_scalar')
  * cdef void _slice_assign_scalar(char *data, Py_ssize_t *shape,             # <<<<<<<<<<<<<<
@@ -23040,7 +23095,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
   Py_ssize_t __pyx_t_3;
   Py_ssize_t __pyx_t_4;
 
-  /* "View.MemoryView":1407
+  /* "View.MemoryView":1412
  *                               size_t itemsize, void *item) nogil:
  *     cdef Py_ssize_t i
  *     cdef Py_ssize_t stride = strides[0]             # <<<<<<<<<<<<<<
@@ -23049,7 +23104,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
  */
   __pyx_v_stride = (__pyx_v_strides[0]);
 
-  /* "View.MemoryView":1408
+  /* "View.MemoryView":1413
  *     cdef Py_ssize_t i
  *     cdef Py_ssize_t stride = strides[0]
  *     cdef Py_ssize_t extent = shape[0]             # <<<<<<<<<<<<<<
@@ -23058,7 +23113,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
  */
   __pyx_v_extent = (__pyx_v_shape[0]);
 
-  /* "View.MemoryView":1410
+  /* "View.MemoryView":1415
  *     cdef Py_ssize_t extent = shape[0]
  * 
  *     if ndim == 1:             # <<<<<<<<<<<<<<
@@ -23068,7 +23123,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
   __pyx_t_1 = ((__pyx_v_ndim == 1) != 0);
   if (__pyx_t_1) {
 
-    /* "View.MemoryView":1411
+    /* "View.MemoryView":1416
  * 
  *     if ndim == 1:
  *         for i in range(extent):             # <<<<<<<<<<<<<<
@@ -23080,7 +23135,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
     for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
       __pyx_v_i = __pyx_t_4;
 
-      /* "View.MemoryView":1412
+      /* "View.MemoryView":1417
  *     if ndim == 1:
  *         for i in range(extent):
  *             memcpy(data, item, itemsize)             # <<<<<<<<<<<<<<
@@ -23089,7 +23144,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
  */
       (void)(memcpy(__pyx_v_data, __pyx_v_item, __pyx_v_itemsize));
 
-      /* "View.MemoryView":1413
+      /* "View.MemoryView":1418
  *         for i in range(extent):
  *             memcpy(data, item, itemsize)
  *             data += stride             # <<<<<<<<<<<<<<
@@ -23099,7 +23154,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
       __pyx_v_data = (__pyx_v_data + __pyx_v_stride);
     }
 
-    /* "View.MemoryView":1410
+    /* "View.MemoryView":1415
  *     cdef Py_ssize_t extent = shape[0]
  * 
  *     if ndim == 1:             # <<<<<<<<<<<<<<
@@ -23109,7 +23164,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
     goto __pyx_L3;
   }
 
-  /* "View.MemoryView":1415
+  /* "View.MemoryView":1420
  *             data += stride
  *     else:
  *         for i in range(extent):             # <<<<<<<<<<<<<<
@@ -23122,7 +23177,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
     for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
       __pyx_v_i = __pyx_t_4;
 
-      /* "View.MemoryView":1416
+      /* "View.MemoryView":1421
  *     else:
  *         for i in range(extent):
  *             _slice_assign_scalar(data, shape + 1, strides + 1,             # <<<<<<<<<<<<<<
@@ -23131,7 +23186,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
  */
       __pyx_memoryview__slice_assign_scalar(__pyx_v_data, (__pyx_v_shape + 1), (__pyx_v_strides + 1), (__pyx_v_ndim - 1), __pyx_v_itemsize, __pyx_v_item);
 
-      /* "View.MemoryView":1418
+      /* "View.MemoryView":1423
  *             _slice_assign_scalar(data, shape + 1, strides + 1,
  *                                 ndim - 1, itemsize, item)
  *             data += stride             # <<<<<<<<<<<<<<
@@ -23143,7 +23198,7 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
   }
   __pyx_L3:;
 
-  /* "View.MemoryView":1403
+  /* "View.MemoryView":1408
  * 
  * @cname('__pyx_memoryview__slice_assign_scalar')
  * cdef void _slice_assign_scalar(char *data, Py_ssize_t *shape,             # <<<<<<<<<<<<<<
@@ -23156,8 +23211,8 @@ static void __pyx_memoryview__slice_assign_scalar(char *__pyx_v_data, Py_ssize_t
 
 /* "(tree fragment)":1
  * def __pyx_unpickle_Enum(__pyx_type, long __pyx_checksum, __pyx_state):             # <<<<<<<<<<<<<<
- *     if __pyx_checksum != 0xb068931:
- *         from pickle import PickleError as __pyx_PickleError
+ *     cdef object __pyx_PickleError
+ *     cdef object __pyx_result
  */
 
 /* Python wrapper */
@@ -23234,8 +23289,8 @@ static PyObject *__pyx_pw_15View_dot_MemoryView_1__pyx_unpickle_Enum(PyObject *_
 }
 
 static PyObject *__pyx_pf_15View_dot_MemoryView___pyx_unpickle_Enum(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state) {
-  PyObject *__pyx_v___pyx_PickleError = NULL;
-  PyObject *__pyx_v___pyx_result = NULL;
+  PyObject *__pyx_v___pyx_PickleError = 0;
+  PyObject *__pyx_v___pyx_result = 0;
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   int __pyx_t_1;
@@ -23246,8 +23301,9 @@ static PyObject *__pyx_pf_15View_dot_MemoryView___pyx_unpickle_Enum(CYTHON_UNUSE
   int __pyx_t_6;
   __Pyx_RefNannySetupContext("__pyx_unpickle_Enum", 0);
 
-  /* "(tree fragment)":2
- * def __pyx_unpickle_Enum(__pyx_type, long __pyx_checksum, __pyx_state):
+  /* "(tree fragment)":4
+ *     cdef object __pyx_PickleError
+ *     cdef object __pyx_result
  *     if __pyx_checksum != 0xb068931:             # <<<<<<<<<<<<<<
  *         from pickle import PickleError as __pyx_PickleError
  *         raise __pyx_PickleError("Incompatible checksums (%s vs 0xb068931 = (name))" % __pyx_checksum)
@@ -23255,38 +23311,38 @@ static PyObject *__pyx_pf_15View_dot_MemoryView___pyx_unpickle_Enum(CYTHON_UNUSE
   __pyx_t_1 = ((__pyx_v___pyx_checksum != 0xb068931) != 0);
   if (__pyx_t_1) {
 
-    /* "(tree fragment)":3
- * def __pyx_unpickle_Enum(__pyx_type, long __pyx_checksum, __pyx_state):
+    /* "(tree fragment)":5
+ *     cdef object __pyx_result
  *     if __pyx_checksum != 0xb068931:
  *         from pickle import PickleError as __pyx_PickleError             # <<<<<<<<<<<<<<
  *         raise __pyx_PickleError("Incompatible checksums (%s vs 0xb068931 = (name))" % __pyx_checksum)
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  */
-    __pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 3, __pyx_L1_error)
+    __pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 5, __pyx_L1_error)
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+    __pyx_t_3 = __Pyx_Import(__pyx_n_s_pickle, __pyx_t_2, 0); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 5, __pyx_L1_error)
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+    __pyx_t_2 = __Pyx_ImportFrom(__pyx_t_3, __pyx_n_s_PickleError); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 5, __pyx_L1_error)
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-    /* "(tree fragment)":4
+    /* "(tree fragment)":6
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  *         raise __pyx_PickleError("Incompatible checksums (%s vs 0xb068931 = (name))" % __pyx_checksum)             # <<<<<<<<<<<<<<
  *     __pyx_result = Enum.__new__(__pyx_type)
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-    __pyx_t_2 = __Pyx_PyInt_From_long(__pyx_v___pyx_checksum); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 4, __pyx_L1_error)
+    __pyx_t_2 = __Pyx_PyInt_From_long(__pyx_v___pyx_checksum); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 6, __pyx_L1_error)
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-    if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 4, __pyx_L1_error)
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-    __PYX_ERR(1, 4, __pyx_L1_error)
+    __PYX_ERR(1, 6, __pyx_L1_error)
 
-    /* "(tree fragment)":2
- * def __pyx_unpickle_Enum(__pyx_type, long __pyx_checksum, __pyx_state):
+    /* "(tree fragment)":4
+ *     cdef object __pyx_PickleError
+ *     cdef object __pyx_result
  *     if __pyx_checksum != 0xb068931:             # <<<<<<<<<<<<<<
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  *         raise __pyx_PickleError("Incompatible checksums (%s vs 0xb068931 = (name))" % __pyx_checksum)
  */
   }
 
-  /* "(tree fragment)":5
+  /* "(tree fragment)":7
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  *         raise __pyx_PickleError("Incompatible checksums (%s vs 0xb068931 = (name))" % __pyx_checksum)
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+  __pyx_t_2 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_MemviewEnum_type), __pyx_n_s_new); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 7, __pyx_L1_error)
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-  if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 5, __pyx_L1_error)
+  if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 7, __pyx_L1_error)
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   __pyx_v___pyx_result = __pyx_t_3;
   __pyx_t_3 = 0;
 
-  /* "(tree fragment)":6
+  /* "(tree fragment)":8
  *         raise __pyx_PickleError("Incompatible checksums (%s vs 0xb068931 = (name))" % __pyx_checksum)
  *     __pyx_result = Enum.__new__(__pyx_type)
  *     if __pyx_state is not None:             # <<<<<<<<<<<<<<
@@ -23356,19 +23413,19 @@ static PyObject *__pyx_pf_15View_dot_MemoryView___pyx_unpickle_Enum(CYTHON_UNUSE
   __pyx_t_6 = (__pyx_t_1 != 0);
   if (__pyx_t_6) {
 
-    /* "(tree fragment)":7
+    /* "(tree fragment)":9
  *     __pyx_result = Enum.__new__(__pyx_type)
  *     if __pyx_state is not None:
  *         __pyx_unpickle_Enum__set_state(<Enum> __pyx_result, __pyx_state)             # <<<<<<<<<<<<<<
  *     return __pyx_result
  * cdef __pyx_unpickle_Enum__set_state(Enum __pyx_result, tuple __pyx_state):
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-    __pyx_t_3 = __pyx_unpickle_Enum__set_state(((struct __pyx_MemviewEnum_obj *)__pyx_v___pyx_result), ((PyObject*)__pyx_v___pyx_state)); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 7, __pyx_L1_error)
+    if (!(likely(PyTuple_CheckExact(__pyx_v___pyx_state))||((__pyx_v___pyx_state) == Py_None)||(PyErr_Format(PyExc_TypeError, "Expected %.16s, got %.200s", "tuple", Py_TYPE(__pyx_v___pyx_state)->tp_name), 0))) __PYX_ERR(1, 9, __pyx_L1_error)
+    __pyx_t_3 = __pyx_unpickle_Enum__set_state(((struct __pyx_MemviewEnum_obj *)__pyx_v___pyx_result), ((PyObject*)__pyx_v___pyx_state)); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 9, __pyx_L1_error)
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     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-    /* "(tree fragment)":6
+    /* "(tree fragment)":8
  *         raise __pyx_PickleError("Incompatible checksums (%s vs 0xb068931 = (name))" % __pyx_checksum)
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  */
   }
 
-  /* "(tree fragment)":8
+  /* "(tree fragment)":10
  *     if __pyx_state is not None:
  *         __pyx_unpickle_Enum__set_state(<Enum> __pyx_result, __pyx_state)
  *     return __pyx_result             # <<<<<<<<<<<<<<
@@ -23391,8 +23448,8 @@ static PyObject *__pyx_pf_15View_dot_MemoryView___pyx_unpickle_Enum(CYTHON_UNUSE
 
   /* "(tree fragment)":1
  * def __pyx_unpickle_Enum(__pyx_type, long __pyx_checksum, __pyx_state):             # <<<<<<<<<<<<<<
- *     if __pyx_checksum != 0xb068931:
- *         from pickle import PickleError as __pyx_PickleError
+ *     cdef object __pyx_PickleError
+ *     cdef object __pyx_result
  */
 
   /* function exit code */
@@ -23411,7 +23468,7 @@ static PyObject *__pyx_pf_15View_dot_MemoryView___pyx_unpickle_Enum(CYTHON_UNUSE
   return __pyx_r;
 }
 
-/* "(tree fragment)":9
+/* "(tree fragment)":11
  *         __pyx_unpickle_Enum__set_state(<Enum> __pyx_result, __pyx_state)
  *     return __pyx_result
  * cdef __pyx_unpickle_Enum__set_state(Enum __pyx_result, tuple __pyx_state):             # <<<<<<<<<<<<<<
@@ -23432,7 +23489,7 @@ static PyObject *__pyx_unpickle_Enum__set_state(struct __pyx_MemviewEnum_obj *__
   PyObject *__pyx_t_8 = NULL;
   __Pyx_RefNannySetupContext("__pyx_unpickle_Enum__set_state", 0);
 
-  /* "(tree fragment)":10
+  /* "(tree fragment)":12
  *     return __pyx_result
  * cdef __pyx_unpickle_Enum__set_state(Enum __pyx_result, tuple __pyx_state):
  *     __pyx_result.name = __pyx_state[0]             # <<<<<<<<<<<<<<
@@ -23441,9 +23498,9 @@ static PyObject *__pyx_unpickle_Enum__set_state(struct __pyx_MemviewEnum_obj *__
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     PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
-    __PYX_ERR(1, 10, __pyx_L1_error)
+    __PYX_ERR(1, 12, __pyx_L1_error)
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-  __pyx_t_1 = __Pyx_GetItemInt_Tuple(__pyx_v___pyx_state, 0, long, 1, __Pyx_PyInt_From_long, 0, 0, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 10, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_GetItemInt_Tuple(__pyx_v___pyx_state, 0, long, 1, __Pyx_PyInt_From_long, 0, 0, 1); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 12, __pyx_L1_error)
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@@ -23451,7 +23508,7 @@ static PyObject *__pyx_unpickle_Enum__set_state(struct __pyx_MemviewEnum_obj *__
   __pyx_v___pyx_result->name = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "(tree fragment)":11
+  /* "(tree fragment)":13
  * cdef __pyx_unpickle_Enum__set_state(Enum __pyx_result, tuple __pyx_state):
  *     __pyx_result.name = __pyx_state[0]
  *     if len(__pyx_state) > 1 and hasattr(__pyx_result, '__dict__'):             # <<<<<<<<<<<<<<
@@ -23459,36 +23516,36 @@ static PyObject *__pyx_unpickle_Enum__set_state(struct __pyx_MemviewEnum_obj *__
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     PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
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+    __PYX_ERR(1, 13, __pyx_L1_error)
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+  __pyx_t_4 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(1, 13, __pyx_L1_error)
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   __pyx_L4_bool_binop_done:;
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-    /* "(tree fragment)":12
+    /* "(tree fragment)":14
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+    __pyx_t_6 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 14, __pyx_L1_error)
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+    __pyx_t_7 = __Pyx_PyObject_GetAttrStr(__pyx_t_6, __pyx_n_s_update); if (unlikely(!__pyx_t_7)) __PYX_ERR(1, 14, __pyx_L1_error)
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       PyErr_SetString(PyExc_TypeError, "'NoneType' object is not subscriptable");
-      __PYX_ERR(1, 12, __pyx_L1_error)
+      __PYX_ERR(1, 14, __pyx_L1_error)
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-    __pyx_t_6 = __Pyx_GetItemInt_Tuple(__pyx_v___pyx_state, 1, long, 1, __Pyx_PyInt_From_long, 0, 0, 1); if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 12, __pyx_L1_error)
+    __pyx_t_6 = __Pyx_GetItemInt_Tuple(__pyx_v___pyx_state, 1, long, 1, __Pyx_PyInt_From_long, 0, 0, 1); if (unlikely(!__pyx_t_6)) __PYX_ERR(1, 14, __pyx_L1_error)
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@@ -23503,12 +23560,12 @@ static PyObject *__pyx_unpickle_Enum__set_state(struct __pyx_MemviewEnum_obj *__
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-    if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 12, __pyx_L1_error)
+    if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 14, __pyx_L1_error)
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     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-    /* "(tree fragment)":11
+    /* "(tree fragment)":13
  * cdef __pyx_unpickle_Enum__set_state(Enum __pyx_result, tuple __pyx_state):
  *     __pyx_result.name = __pyx_state[0]
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@@ -23516,7 +23573,7 @@ static PyObject *__pyx_unpickle_Enum__set_state(struct __pyx_MemviewEnum_obj *__
  */
   }
 
-  /* "(tree fragment)":9
+  /* "(tree fragment)":11
  *         __pyx_unpickle_Enum__set_state(<Enum> __pyx_result, __pyx_state)
  *     return __pyx_result
  * cdef __pyx_unpickle_Enum__set_state(Enum __pyx_result, tuple __pyx_state):             # <<<<<<<<<<<<<<
@@ -23631,6 +23688,9 @@ static PyTypeObject __pyx_type_8implicit_3lmf_RNGVector = {
   #if PY_VERSION_HEX >= 0x030400a1
   0, /*tp_finalize*/
   #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
 };
 static struct __pyx_vtabstruct_array __pyx_vtable_array;
 
@@ -23809,6 +23869,9 @@ static PyTypeObject __pyx_type___pyx_array = {
   #if PY_VERSION_HEX >= 0x030400a1
   0, /*tp_finalize*/
   #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
 };
 
 static PyObject *__pyx_tp_new_Enum(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
@@ -23917,6 +23980,9 @@ static PyTypeObject __pyx_type___pyx_MemviewEnum = {
   #if PY_VERSION_HEX >= 0x030400a1
   0, /*tp_finalize*/
   #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
 };
 static struct __pyx_vtabstruct_memoryview __pyx_vtable_memoryview;
 
@@ -24167,6 +24233,9 @@ static PyTypeObject __pyx_type___pyx_memoryview = {
   #if PY_VERSION_HEX >= 0x030400a1
   0, /*tp_finalize*/
   #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
 };
 static struct __pyx_vtabstruct__memoryviewslice __pyx_vtable__memoryviewslice;
 
@@ -24302,6 +24371,9 @@ static PyTypeObject __pyx_type___pyx_memoryviewslice = {
   #if PY_VERSION_HEX >= 0x030400a1
   0, /*tp_finalize*/
   #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
 };
 
 static PyMethodDef __pyx_methods[] = {
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-  __pyx_builtin_MemoryError = __Pyx_GetBuiltinName(__pyx_n_s_MemoryError); if (!__pyx_builtin_MemoryError) __PYX_ERR(1, 147, __pyx_L1_error)
-  __pyx_builtin_enumerate = __Pyx_GetBuiltinName(__pyx_n_s_enumerate); if (!__pyx_builtin_enumerate) __PYX_ERR(1, 150, __pyx_L1_error)
-  __pyx_builtin_Ellipsis = __Pyx_GetBuiltinName(__pyx_n_s_Ellipsis); if (!__pyx_builtin_Ellipsis) __PYX_ERR(1, 399, __pyx_L1_error)
-  __pyx_builtin_id = __Pyx_GetBuiltinName(__pyx_n_s_id); if (!__pyx_builtin_id) __PYX_ERR(1, 608, __pyx_L1_error)
-  __pyx_builtin_IndexError = __Pyx_GetBuiltinName(__pyx_n_s_IndexError); if (!__pyx_builtin_IndexError) __PYX_ERR(1, 827, __pyx_L1_error)
+  __pyx_builtin_ValueError = __Pyx_GetBuiltinName(__pyx_n_s_ValueError); if (!__pyx_builtin_ValueError) __PYX_ERR(1, 133, __pyx_L1_error)
+  __pyx_builtin_MemoryError = __Pyx_GetBuiltinName(__pyx_n_s_MemoryError); if (!__pyx_builtin_MemoryError) __PYX_ERR(1, 148, __pyx_L1_error)
+  __pyx_builtin_enumerate = __Pyx_GetBuiltinName(__pyx_n_s_enumerate); if (!__pyx_builtin_enumerate) __PYX_ERR(1, 151, __pyx_L1_error)
+  __pyx_builtin_Ellipsis = __Pyx_GetBuiltinName(__pyx_n_s_Ellipsis); if (!__pyx_builtin_Ellipsis) __PYX_ERR(1, 404, __pyx_L1_error)
+  __pyx_builtin_id = __Pyx_GetBuiltinName(__pyx_n_s_id); if (!__pyx_builtin_id) __PYX_ERR(1, 613, __pyx_L1_error)
+  __pyx_builtin_IndexError = __Pyx_GetBuiltinName(__pyx_n_s_IndexError); if (!__pyx_builtin_IndexError) __PYX_ERR(1, 832, __pyx_L1_error)
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -24633,41 +24705,10 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
  * 
  *             # set factors to all zeros for users without any ratings
  */
-  __pyx_slice__4 = PySlice_New(Py_None, Py_None, Py_None); if (unlikely(!__pyx_slice__4)) __PYX_ERR(0, 152, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_slice__4);
-  __Pyx_GIVEREF(__pyx_slice__4);
   __pyx_tuple__6 = PyTuple_Pack(2, __pyx_slice__4, __pyx_int_neg_2); if (unlikely(!__pyx_tuple__6)) __PYX_ERR(0, 152, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__6);
   __Pyx_GIVEREF(__pyx_tuple__6);
 
-  /* "implicit/lmf.pyx":175
- *                            user_items.indices, user_items.indptr, user_items.data,
- *                            self.learning_rate, self.regularization, self.neg_prop, num_threads)
- *                 self.user_factors[:, -2] = 1.0             # <<<<<<<<<<<<<<
- *                 # item update
- *                 lmf_update(rng, item_vec_deriv_sum,
- */
-  __pyx_slice__4 = PySlice_New(Py_None, Py_None, Py_None); if (unlikely(!__pyx_slice__4)) __PYX_ERR(0, 175, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_slice__4);
-  __Pyx_GIVEREF(__pyx_slice__4);
-  __pyx_tuple__6 = PyTuple_Pack(2, __pyx_slice__4, __pyx_int_neg_2); if (unlikely(!__pyx_tuple__6)) __PYX_ERR(0, 175, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_tuple__6);
-  __Pyx_GIVEREF(__pyx_tuple__6);
-
-  /* "implicit/lmf.pyx":181
- *                            item_users.indices, item_users.indptr, item_users.data,
- *                            self.learning_rate, self.regularization, self.neg_prop, num_threads)
- *                 self.item_factors[:, -1] = 1.0             # <<<<<<<<<<<<<<
- *                 progress.update(1)
- * 
- */
-  __pyx_slice__4 = PySlice_New(Py_None, Py_None, Py_None); if (unlikely(!__pyx_slice__4)) __PYX_ERR(0, 181, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_slice__4);
-  __Pyx_GIVEREF(__pyx_slice__4);
-  __pyx_tuple__5 = PyTuple_Pack(2, __pyx_slice__4, __pyx_int_neg_1); if (unlikely(!__pyx_tuple__5)) __PYX_ERR(0, 181, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_tuple__5);
-  __Pyx_GIVEREF(__pyx_tuple__5);
-
   /* "implicit/lmf.pyx":168
  *         cdef RNGVector rng = RNGVector(num_threads, len(user_items.data) - 1)
  *         log.debug("Running %i LMF training epochs", self.iterations)
@@ -24693,58 +24734,58 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
   __Pyx_GOTREF(__pyx_tuple__11);
   __Pyx_GIVEREF(__pyx_tuple__11);
 
-  /* "View.MemoryView":132
+  /* "View.MemoryView":133
  * 
  *         if not self.ndim:
  *             raise ValueError("Empty shape tuple for cython.array")             # <<<<<<<<<<<<<<
  * 
  *         if itemsize <= 0:
  */
-  __pyx_tuple__12 = PyTuple_Pack(1, __pyx_kp_s_Empty_shape_tuple_for_cython_arr); if (unlikely(!__pyx_tuple__12)) __PYX_ERR(1, 132, __pyx_L1_error)
+  __pyx_tuple__12 = PyTuple_Pack(1, __pyx_kp_s_Empty_shape_tuple_for_cython_arr); if (unlikely(!__pyx_tuple__12)) __PYX_ERR(1, 133, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__12);
   __Pyx_GIVEREF(__pyx_tuple__12);
 
-  /* "View.MemoryView":135
+  /* "View.MemoryView":136
  * 
  *         if itemsize <= 0:
  *             raise ValueError("itemsize <= 0 for cython.array")             # <<<<<<<<<<<<<<
  * 
  *         if not isinstance(format, bytes):
  */
-  __pyx_tuple__13 = PyTuple_Pack(1, __pyx_kp_s_itemsize_0_for_cython_array); if (unlikely(!__pyx_tuple__13)) __PYX_ERR(1, 135, __pyx_L1_error)
+  __pyx_tuple__13 = PyTuple_Pack(1, __pyx_kp_s_itemsize_0_for_cython_array); if (unlikely(!__pyx_tuple__13)) __PYX_ERR(1, 136, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__13);
   __Pyx_GIVEREF(__pyx_tuple__13);
 
-  /* "View.MemoryView":147
+  /* "View.MemoryView":148
  * 
  *         if not self._shape:
  *             raise MemoryError("unable to allocate shape and strides.")             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  __pyx_tuple__14 = PyTuple_Pack(1, __pyx_kp_s_unable_to_allocate_shape_and_str); if (unlikely(!__pyx_tuple__14)) __PYX_ERR(1, 147, __pyx_L1_error)
+  __pyx_tuple__14 = PyTuple_Pack(1, __pyx_kp_s_unable_to_allocate_shape_and_str); if (unlikely(!__pyx_tuple__14)) __PYX_ERR(1, 148, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__14);
   __Pyx_GIVEREF(__pyx_tuple__14);
 
-  /* "View.MemoryView":175
+  /* "View.MemoryView":176
  *             self.data = <char *>malloc(self.len)
  *             if not self.data:
  *                 raise MemoryError("unable to allocate array data.")             # <<<<<<<<<<<<<<
  * 
  *             if self.dtype_is_object:
  */
-  __pyx_tuple__15 = PyTuple_Pack(1, __pyx_kp_s_unable_to_allocate_array_data); if (unlikely(!__pyx_tuple__15)) __PYX_ERR(1, 175, __pyx_L1_error)
+  __pyx_tuple__15 = PyTuple_Pack(1, __pyx_kp_s_unable_to_allocate_array_data); if (unlikely(!__pyx_tuple__15)) __PYX_ERR(1, 176, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__15);
   __Pyx_GIVEREF(__pyx_tuple__15);
 
-  /* "View.MemoryView":191
+  /* "View.MemoryView":192
  *             bufmode = PyBUF_F_CONTIGUOUS | PyBUF_ANY_CONTIGUOUS
  *         if not (flags & bufmode):
  *             raise ValueError("Can only create a buffer that is contiguous in memory.")             # <<<<<<<<<<<<<<
  *         info.buf = self.data
  *         info.len = self.len
  */
-  __pyx_tuple__16 = PyTuple_Pack(1, __pyx_kp_s_Can_only_create_a_buffer_that_is); if (unlikely(!__pyx_tuple__16)) __PYX_ERR(1, 191, __pyx_L1_error)
+  __pyx_tuple__16 = PyTuple_Pack(1, __pyx_kp_s_Can_only_create_a_buffer_that_is); if (unlikely(!__pyx_tuple__16)) __PYX_ERR(1, 192, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__16);
   __Pyx_GIVEREF(__pyx_tuple__16);
 
@@ -24767,58 +24808,58 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
   __Pyx_GOTREF(__pyx_tuple__18);
   __Pyx_GIVEREF(__pyx_tuple__18);
 
-  /* "View.MemoryView":413
+  /* "View.MemoryView":418
  *     def __setitem__(memoryview self, object index, object value):
  *         if self.view.readonly:
  *             raise TypeError("Cannot assign to read-only memoryview")             # <<<<<<<<<<<<<<
  * 
  *         have_slices, index = _unellipsify(index, self.view.ndim)
  */
-  __pyx_tuple__19 = PyTuple_Pack(1, __pyx_kp_s_Cannot_assign_to_read_only_memor); if (unlikely(!__pyx_tuple__19)) __PYX_ERR(1, 413, __pyx_L1_error)
+  __pyx_tuple__19 = PyTuple_Pack(1, __pyx_kp_s_Cannot_assign_to_read_only_memor); if (unlikely(!__pyx_tuple__19)) __PYX_ERR(1, 418, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__19);
   __Pyx_GIVEREF(__pyx_tuple__19);
 
-  /* "View.MemoryView":490
+  /* "View.MemoryView":495
  *             result = struct.unpack(self.view.format, bytesitem)
  *         except struct.error:
  *             raise ValueError("Unable to convert item to object")             # <<<<<<<<<<<<<<
  *         else:
  *             if len(self.view.format) == 1:
  */
-  __pyx_tuple__20 = PyTuple_Pack(1, __pyx_kp_s_Unable_to_convert_item_to_object); if (unlikely(!__pyx_tuple__20)) __PYX_ERR(1, 490, __pyx_L1_error)
+  __pyx_tuple__20 = PyTuple_Pack(1, __pyx_kp_s_Unable_to_convert_item_to_object); if (unlikely(!__pyx_tuple__20)) __PYX_ERR(1, 495, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__20);
   __Pyx_GIVEREF(__pyx_tuple__20);
 
-  /* "View.MemoryView":515
+  /* "View.MemoryView":520
  *     def __getbuffer__(self, Py_buffer *info, int flags):
  *         if flags & PyBUF_WRITABLE and self.view.readonly:
  *             raise ValueError("Cannot create writable memory view from read-only memoryview")             # <<<<<<<<<<<<<<
  * 
- *         if flags & PyBUF_STRIDES:
+ *         if flags & PyBUF_ND:
  */
-  __pyx_tuple__21 = PyTuple_Pack(1, __pyx_kp_s_Cannot_create_writable_memory_vi); if (unlikely(!__pyx_tuple__21)) __PYX_ERR(1, 515, __pyx_L1_error)
+  __pyx_tuple__21 = PyTuple_Pack(1, __pyx_kp_s_Cannot_create_writable_memory_vi); if (unlikely(!__pyx_tuple__21)) __PYX_ERR(1, 520, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__21);
   __Pyx_GIVEREF(__pyx_tuple__21);
 
-  /* "View.MemoryView":565
+  /* "View.MemoryView":570
  *         if self.view.strides == NULL:
  * 
  *             raise ValueError("Buffer view does not expose strides")             # <<<<<<<<<<<<<<
  * 
  *         return tuple([stride for stride in self.view.strides[:self.view.ndim]])
  */
-  __pyx_tuple__22 = PyTuple_Pack(1, __pyx_kp_s_Buffer_view_does_not_expose_stri); if (unlikely(!__pyx_tuple__22)) __PYX_ERR(1, 565, __pyx_L1_error)
+  __pyx_tuple__22 = PyTuple_Pack(1, __pyx_kp_s_Buffer_view_does_not_expose_stri); if (unlikely(!__pyx_tuple__22)) __PYX_ERR(1, 570, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__22);
   __Pyx_GIVEREF(__pyx_tuple__22);
 
-  /* "View.MemoryView":572
+  /* "View.MemoryView":577
  *     def suboffsets(self):
  *         if self.view.suboffsets == NULL:
  *             return (-1,) * self.view.ndim             # <<<<<<<<<<<<<<
  * 
  *         return tuple([suboffset for suboffset in self.view.suboffsets[:self.view.ndim]])
  */
-  __pyx_tuple__23 = PyTuple_New(1); if (unlikely(!__pyx_tuple__23)) __PYX_ERR(1, 572, __pyx_L1_error)
+  __pyx_tuple__23 = PyTuple_New(1); if (unlikely(!__pyx_tuple__23)) __PYX_ERR(1, 577, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__23);
   __Pyx_INCREF(__pyx_int_neg_1);
   __Pyx_GIVEREF(__pyx_int_neg_1);
@@ -24844,47 +24885,14 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
   __Pyx_GOTREF(__pyx_tuple__25);
   __Pyx_GIVEREF(__pyx_tuple__25);
 
-  /* "View.MemoryView":677
- *         if item is Ellipsis:
- *             if not seen_ellipsis:
- *                 result.extend([slice(None)] * (ndim - len(tup) + 1))             # <<<<<<<<<<<<<<
- *                 seen_ellipsis = True
- *             else:
- */
-  __pyx_slice__4 = PySlice_New(Py_None, Py_None, Py_None); if (unlikely(!__pyx_slice__4)) __PYX_ERR(1, 677, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_slice__4);
-  __Pyx_GIVEREF(__pyx_slice__4);
-
-  /* "View.MemoryView":680
- *                 seen_ellipsis = True
- *             else:
- *                 result.append(slice(None))             # <<<<<<<<<<<<<<
- *             have_slices = True
- *         else:
- */
-  __pyx_slice__4 = PySlice_New(Py_None, Py_None, Py_None); if (unlikely(!__pyx_slice__4)) __PYX_ERR(1, 680, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_slice__4);
-  __Pyx_GIVEREF(__pyx_slice__4);
-
-  /* "View.MemoryView":691
- *     nslices = ndim - len(result)
- *     if nslices:
- *         result.extend([slice(None)] * nslices)             # <<<<<<<<<<<<<<
- * 
- *     return have_slices or nslices, tuple(result)
- */
-  __pyx_slice__4 = PySlice_New(Py_None, Py_None, Py_None); if (unlikely(!__pyx_slice__4)) __PYX_ERR(1, 691, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_slice__4);
-  __Pyx_GIVEREF(__pyx_slice__4);
-
-  /* "View.MemoryView":698
+  /* "View.MemoryView":703
  *     for suboffset in suboffsets[:ndim]:
  *         if suboffset >= 0:
  *             raise ValueError("Indirect dimensions not supported")             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  __pyx_tuple__26 = PyTuple_Pack(1, __pyx_kp_s_Indirect_dimensions_not_supporte); if (unlikely(!__pyx_tuple__26)) __PYX_ERR(1, 698, __pyx_L1_error)
+  __pyx_tuple__26 = PyTuple_Pack(1, __pyx_kp_s_Indirect_dimensions_not_supporte); if (unlikely(!__pyx_tuple__26)) __PYX_ERR(1, 703, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__26);
   __Pyx_GIVEREF(__pyx_tuple__26);
 
@@ -24957,65 +24965,65 @@ static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(__pyx_tuple__36);
   __pyx_codeobj__37 = (PyObject*)__Pyx_PyCode_New(11, 0, 28, 0, CO_OPTIMIZED|CO_NEWLOCALS, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_tuple__36, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_implicit_lmf_pyx, __pyx_n_s_lmf_update, 187, __pyx_empty_bytes); if (unlikely(!__pyx_codeobj__37)) __PYX_ERR(0, 187, __pyx_L1_error)
 
-  /* "View.MemoryView":285
+  /* "View.MemoryView":286
  *         return self.name
  * 
  * cdef generic = Enum("<strided and direct or indirect>")             # <<<<<<<<<<<<<<
  * cdef strided = Enum("<strided and direct>") # default
  * cdef indirect = Enum("<strided and indirect>")
  */
-  __pyx_tuple__38 = PyTuple_Pack(1, __pyx_kp_s_strided_and_direct_or_indirect); if (unlikely(!__pyx_tuple__38)) __PYX_ERR(1, 285, __pyx_L1_error)
+  __pyx_tuple__38 = PyTuple_Pack(1, __pyx_kp_s_strided_and_direct_or_indirect); if (unlikely(!__pyx_tuple__38)) __PYX_ERR(1, 286, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__38);
   __Pyx_GIVEREF(__pyx_tuple__38);
 
-  /* "View.MemoryView":286
+  /* "View.MemoryView":287
  * 
  * cdef generic = Enum("<strided and direct or indirect>")
  * cdef strided = Enum("<strided and direct>") # default             # <<<<<<<<<<<<<<
  * cdef indirect = Enum("<strided and indirect>")
  * 
  */
-  __pyx_tuple__39 = PyTuple_Pack(1, __pyx_kp_s_strided_and_direct); if (unlikely(!__pyx_tuple__39)) __PYX_ERR(1, 286, __pyx_L1_error)
+  __pyx_tuple__39 = PyTuple_Pack(1, __pyx_kp_s_strided_and_direct); if (unlikely(!__pyx_tuple__39)) __PYX_ERR(1, 287, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__39);
   __Pyx_GIVEREF(__pyx_tuple__39);
 
-  /* "View.MemoryView":287
+  /* "View.MemoryView":288
  * cdef generic = Enum("<strided and direct or indirect>")
  * cdef strided = Enum("<strided and direct>") # default
  * cdef indirect = Enum("<strided and indirect>")             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  __pyx_tuple__40 = PyTuple_Pack(1, __pyx_kp_s_strided_and_indirect); if (unlikely(!__pyx_tuple__40)) __PYX_ERR(1, 287, __pyx_L1_error)
+  __pyx_tuple__40 = PyTuple_Pack(1, __pyx_kp_s_strided_and_indirect); if (unlikely(!__pyx_tuple__40)) __PYX_ERR(1, 288, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__40);
   __Pyx_GIVEREF(__pyx_tuple__40);
 
-  /* "View.MemoryView":290
+  /* "View.MemoryView":291
  * 
  * 
  * cdef contiguous = Enum("<contiguous and direct>")             # <<<<<<<<<<<<<<
  * cdef indirect_contiguous = Enum("<contiguous and indirect>")
  * 
  */
-  __pyx_tuple__41 = PyTuple_Pack(1, __pyx_kp_s_contiguous_and_direct); if (unlikely(!__pyx_tuple__41)) __PYX_ERR(1, 290, __pyx_L1_error)
+  __pyx_tuple__41 = PyTuple_Pack(1, __pyx_kp_s_contiguous_and_direct); if (unlikely(!__pyx_tuple__41)) __PYX_ERR(1, 291, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__41);
   __Pyx_GIVEREF(__pyx_tuple__41);
 
-  /* "View.MemoryView":291
+  /* "View.MemoryView":292
  * 
  * cdef contiguous = Enum("<contiguous and direct>")
  * cdef indirect_contiguous = Enum("<contiguous and indirect>")             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  __pyx_tuple__42 = PyTuple_Pack(1, __pyx_kp_s_contiguous_and_indirect); if (unlikely(!__pyx_tuple__42)) __PYX_ERR(1, 291, __pyx_L1_error)
+  __pyx_tuple__42 = PyTuple_Pack(1, __pyx_kp_s_contiguous_and_indirect); if (unlikely(!__pyx_tuple__42)) __PYX_ERR(1, 292, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__42);
   __Pyx_GIVEREF(__pyx_tuple__42);
 
   /* "(tree fragment)":1
  * def __pyx_unpickle_Enum(__pyx_type, long __pyx_checksum, __pyx_state):             # <<<<<<<<<<<<<<
- *     if __pyx_checksum != 0xb068931:
- *         from pickle import PickleError as __pyx_PickleError
+ *     cdef object __pyx_PickleError
+ *     cdef object __pyx_result
  */
   __pyx_tuple__43 = PyTuple_Pack(5, __pyx_n_s_pyx_type, __pyx_n_s_pyx_checksum, __pyx_n_s_pyx_state, __pyx_n_s_pyx_PickleError, __pyx_n_s_pyx_result); if (unlikely(!__pyx_tuple__43)) __PYX_ERR(1, 1, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__43);
@@ -25098,7 +25106,9 @@ static int __Pyx_modinit_type_init_code(void) {
   __pyx_vtabptr_8implicit_3lmf_RNGVector = &__pyx_vtable_8implicit_3lmf_RNGVector;
   __pyx_vtable_8implicit_3lmf_RNGVector.generate = (long (*)(struct __pyx_obj_8implicit_3lmf_RNGVector *, int))__pyx_f_8implicit_3lmf_9RNGVector_generate;
   if (PyType_Ready(&__pyx_type_8implicit_3lmf_RNGVector) < 0) __PYX_ERR(0, 32, __pyx_L1_error)
+  #if PY_VERSION_HEX < 0x030800B1
   __pyx_type_8implicit_3lmf_RNGVector.tp_print = 0;
+  #endif
   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type_8implicit_3lmf_RNGVector.tp_dictoffset && __pyx_type_8implicit_3lmf_RNGVector.tp_getattro == PyObject_GenericGetAttr)) {
     __pyx_type_8implicit_3lmf_RNGVector.tp_getattro = __Pyx_PyObject_GenericGetAttr;
   }
@@ -25108,17 +25118,21 @@ static int __Pyx_modinit_type_init_code(void) {
   __pyx_ptype_8implicit_3lmf_RNGVector = &__pyx_type_8implicit_3lmf_RNGVector;
   __pyx_vtabptr_array = &__pyx_vtable_array;
   __pyx_vtable_array.get_memview = (PyObject *(*)(struct __pyx_array_obj *))__pyx_array_get_memview;
-  if (PyType_Ready(&__pyx_type___pyx_array) < 0) __PYX_ERR(1, 104, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type___pyx_array) < 0) __PYX_ERR(1, 105, __pyx_L1_error)
+  #if PY_VERSION_HEX < 0x030800B1
   __pyx_type___pyx_array.tp_print = 0;
-  if (__Pyx_SetVtable(__pyx_type___pyx_array.tp_dict, __pyx_vtabptr_array) < 0) __PYX_ERR(1, 104, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type___pyx_array) < 0) __PYX_ERR(1, 104, __pyx_L1_error)
+  #endif
+  if (__Pyx_SetVtable(__pyx_type___pyx_array.tp_dict, __pyx_vtabptr_array) < 0) __PYX_ERR(1, 105, __pyx_L1_error)
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   __pyx_array_type = &__pyx_type___pyx_array;
-  if (PyType_Ready(&__pyx_type___pyx_MemviewEnum) < 0) __PYX_ERR(1, 278, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type___pyx_MemviewEnum) < 0) __PYX_ERR(1, 279, __pyx_L1_error)
+  #if PY_VERSION_HEX < 0x030800B1
   __pyx_type___pyx_MemviewEnum.tp_print = 0;
+  #endif
   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type___pyx_MemviewEnum.tp_dictoffset && __pyx_type___pyx_MemviewEnum.tp_getattro == PyObject_GenericGetAttr)) {
     __pyx_type___pyx_MemviewEnum.tp_getattro = __Pyx_PyObject_GenericGetAttr;
   }
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type___pyx_MemviewEnum) < 0) __PYX_ERR(1, 278, __pyx_L1_error)
+  if (__Pyx_setup_reduce((PyObject*)&__pyx_type___pyx_MemviewEnum) < 0) __PYX_ERR(1, 279, __pyx_L1_error)
   __pyx_MemviewEnum_type = &__pyx_type___pyx_MemviewEnum;
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   __pyx_vtable_memoryview.get_item_pointer = (char *(*)(struct __pyx_memoryview_obj *, PyObject *))__pyx_memoryview_get_item_pointer;
@@ -25128,26 +25142,30 @@ static int __Pyx_modinit_type_init_code(void) {
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-  if (PyType_Ready(&__pyx_type___pyx_memoryview) < 0) __PYX_ERR(1, 329, __pyx_L1_error)
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+  #if PY_VERSION_HEX < 0x030800B1
   __pyx_type___pyx_memoryview.tp_print = 0;
+  #endif
   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type___pyx_memoryview.tp_dictoffset && __pyx_type___pyx_memoryview.tp_getattro == PyObject_GenericGetAttr)) {
     __pyx_type___pyx_memoryview.tp_getattro = __Pyx_PyObject_GenericGetAttr;
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-  if (__Pyx_SetVtable(__pyx_type___pyx_memoryview.tp_dict, __pyx_vtabptr_memoryview) < 0) __PYX_ERR(1, 329, __pyx_L1_error)
-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type___pyx_memoryview) < 0) __PYX_ERR(1, 329, __pyx_L1_error)
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   __pyx_vtable__memoryviewslice.__pyx_base = *__pyx_vtabptr_memoryview;
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   __pyx_type___pyx_memoryviewslice.tp_base = __pyx_memoryview_type;
-  if (PyType_Ready(&__pyx_type___pyx_memoryviewslice) < 0) __PYX_ERR(1, 960, __pyx_L1_error)
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   __pyx_type___pyx_memoryviewslice.tp_print = 0;
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   if ((CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP) && likely(!__pyx_type___pyx_memoryviewslice.tp_dictoffset && __pyx_type___pyx_memoryviewslice.tp_getattro == PyObject_GenericGetAttr)) {
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-  if (__Pyx_setup_reduce((PyObject*)&__pyx_type___pyx_memoryviewslice) < 0) __PYX_ERR(1, 960, __pyx_L1_error)
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 }
-static CYTHON_SMALL_CODE int __Pyx_copy_spec_to_module(PyObject *spec, PyObject *moddict, const char* from_name, const char* to_name) {
+static CYTHON_SMALL_CODE int __Pyx_copy_spec_to_module(PyObject *spec, PyObject *moddict, const char* from_name, const char* to_name, int allow_none) {
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     int result = 0;
     if (likely(value)) {
-        result = PyDict_SetItemString(moddict, to_name, value);
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-    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "parent", "__package__") < 0)) goto bad;
-    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "submodule_search_locations", "__path__") < 0)) goto bad;
+    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "loader", "__loader__", 1) < 0)) goto bad;
+    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "origin", "__file__", 1) < 0)) goto bad;
+    if (unlikely(__Pyx_copy_spec_to_module(spec, moddict, "parent", "__package__", 1) < 0)) goto bad;
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-  #endif
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   #endif
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-  if (__Pyx_InitCachedBuiltins() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
+  if (__Pyx_InitCachedBuiltins() < 0) goto __pyx_L1_error;
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-  if (__Pyx_InitCachedConstants() < 0) __PYX_ERR(0, 1, __pyx_L1_error)
+  if (__Pyx_InitCachedConstants() < 0) goto __pyx_L1_error;
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-  /* "View.MemoryView":208
+  /* "View.MemoryView":209
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-  /* "View.MemoryView":286
+  /* "View.MemoryView":287
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-  /* "View.MemoryView":287
+  /* "View.MemoryView":288
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-  /* "View.MemoryView":290
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+  __pyx_t_3 = __Pyx_PyObject_Call(((PyObject *)__pyx_MemviewEnum_type), __pyx_tuple__41, NULL); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 291, __pyx_L1_error)
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-  /* "View.MemoryView":291
+  /* "View.MemoryView":292
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+  __pyx_t_3 = __Pyx_PyObject_Call(((PyObject *)__pyx_MemviewEnum_type), __pyx_tuple__42, NULL); if (unlikely(!__pyx_t_3)) __PYX_ERR(1, 292, __pyx_L1_error)
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-  /* "View.MemoryView":315
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-  /* "View.MemoryView":316
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-  /* "View.MemoryView":544
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-  /* "View.MemoryView":990
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-  /* "(tree fragment)":9
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+static CYTHON_INLINE PY_UINT64_T __Pyx_get_object_dict_version(PyObject *obj) {
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+        dictptr = _PyObject_GetDictPtr(obj);
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+static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UINT64_T tp_dict_version, PY_UINT64_T obj_dict_version) {
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 /* GetModuleGlobalName */
 #if CYTHON_USE_DICT_VERSIONS
 static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value)
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 }
 #if 1 || PY_VERSION_HEX < 0x030600B1
-static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, int nargs, PyObject *kwargs) {
+static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, Py_ssize_t nargs, PyObject *kwargs) {
     PyCodeObject *co = (PyCodeObject *)PyFunction_GET_CODE(func);
     PyObject *globals = PyFunction_GET_GLOBALS(func);
     PyObject *argdefs = PyFunction_GET_DEFAULTS(func);
@@ -26161,12 +26206,12 @@ static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args,
     }
 #if PY_MAJOR_VERSION >= 3
     result = PyEval_EvalCodeEx((PyObject*)co, globals, (PyObject *)NULL,
-                               args, nargs,
+                               args, (int)nargs,
                                k, (int)nk,
                                d, (int)nd, kwdefs, closure);
 #else
     result = PyEval_EvalCodeEx(co, globals, (PyObject *)NULL,
-                               args, nargs,
+                               args, (int)nargs,
                                k, (int)nk,
                                d, (int)nd, closure);
 #endif
@@ -26568,7 +26613,9 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
 
 /* PyIntBinop */
 #if !CYTHON_COMPILING_IN_PYPY
-static PyObject* __Pyx_PyInt_AddObjC(PyObject *op1, PyObject *op2, CYTHON_UNUSED long intval, CYTHON_UNUSED int inplace) {
+static PyObject* __Pyx_PyInt_AddObjC(PyObject *op1, PyObject *op2, CYTHON_UNUSED long intval, int inplace, int zerodivision_check) {
+    (void)inplace;
+    (void)zerodivision_check;
     #if PY_MAJOR_VERSION < 3
     if (likely(PyInt_CheckExact(op1))) {
         const long b = intval;
@@ -27430,11 +27477,7 @@ __Pyx_init_memviewslice(struct __pyx_memoryview_obj *memview,
     int i, retval=-1;
     Py_buffer *buf = &memview->view;
     __Pyx_RefNannySetupContext("init_memviewslice", 0);
-    if (!buf) {
-        PyErr_SetString(PyExc_ValueError,
-            "buf is NULL.");
-        goto fail;
-    } else if (memviewslice->memview || memviewslice->data) {
+    if (memviewslice->memview || memviewslice->data) {
         PyErr_SetString(PyExc_ValueError,
             "memviewslice is already initialized!");
         goto fail;
@@ -28914,6 +28957,9 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030400a1
     0,
 #endif
+#if PY_VERSION_HEX >= 0x030800b1
+    0,
+#endif
 };
 static int __pyx_CyFunction_init(void) {
     __pyx_CyFunctionType = __Pyx_FetchCommonType(&__pyx_CyFunctionType_type);
@@ -29335,6 +29381,9 @@ static PyTypeObject __pyx_FusedFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030400a1
     0,
 #endif
+#if PY_VERSION_HEX >= 0x030800b1
+    0,
+#endif
 };
 static int __pyx_FusedFunction_init(void) {
     __pyx_FusedFunctionType = __Pyx_FetchCommonType(&__pyx_FusedFunctionType_type);
@@ -29690,7 +29739,7 @@ static int __Pyx_BufFmt_ParseNumber(const char** ts) {
       return -1;
     } else {
         count = *t++ - '0';
-        while (*t >= '0' && *t < '9') {
+        while (*t >= '0' && *t <= '9') {
             count *= 10;
             count += *t++ - '0';
         }
@@ -30264,7 +30313,7 @@ __pyx_check_suboffsets(Py_buffer *buf, int dim, CYTHON_UNUSED int ndim, int spec
         }
     }
     if (spec & __Pyx_MEMVIEW_PTR) {
-        if (!buf->suboffsets || (buf->suboffsets && buf->suboffsets[dim] < 0)) {
+        if (!buf->suboffsets || (buf->suboffsets[dim] < 0)) {
             PyErr_Format(PyExc_ValueError,
                          "Buffer is not indirectly accessible "
                          "in dimension %d.", dim);
diff --git a/implicit/recommender_base.cpp b/implicit/matrix_factorization_base.cpp
similarity index 89%
rename from implicit/recommender_base.cpp
rename to implicit/matrix_factorization_base.cpp
index 10a9ae09..4bec624e 100644
--- a/implicit/recommender_base.cpp
+++ b/implicit/matrix_factorization_base.cpp
@@ -23,13 +23,13 @@
             "implicit"
         ],
         "language": "c++",
-        "name": "implicit.recommender_base",
+        "name": "implicit.matrix_factorization_base",
         "sources": [
-            "implicit/recommender_base.pyx",
+            "implicit/matrix_factorization_base.pyx",
             "implicit/topnc.cpp"
         ]
     },
-    "module_name": "implicit.recommender_base"
+    "module_name": "implicit.matrix_factorization_base"
 }
 END: Cython Metadata */
 
@@ -637,8 +637,8 @@ static CYTHON_INLINE float __PYX_NAN() {
   #endif
 #endif
 
-#define __PYX_HAVE__implicit__recommender_base
-#define __PYX_HAVE_API__implicit__recommender_base
+#define __PYX_HAVE__implicit__matrix_factorization_base
+#define __PYX_HAVE_API__implicit__matrix_factorization_base
 /* Early includes */
 #include "topnc.h"
 #include "pythread.h"
@@ -854,7 +854,7 @@ static const char *__pyx_filename;
 
 
 static const char *__pyx_f[] = {
-  "implicit/recommender_base.pyx",
+  "implicit/matrix_factorization_base.pyx",
   "stringsource",
 };
 /* NoFastGil.proto */
@@ -967,37 +967,37 @@ typedef struct {
 
 
 /*--- Type declarations ---*/
-struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct__recommend;
-struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr;
+struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend;
+struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr;
 struct __pyx_array_obj;
 struct __pyx_MemviewEnum_obj;
 struct __pyx_memoryview_obj;
 struct __pyx_memoryviewslice_obj;
 
-/* "implicit/recommender_base.pyx":157
+/* "implicit/matrix_factorization_base.pyx":40
  *         self._user_norms, self._item_norms = None, None
  * 
  *     def recommend(self, userid, user_items,             # <<<<<<<<<<<<<<
  *                   N=10, filter_already_liked_items=True, filter_items=None, recalculate_user=False):
  *         user = self._user_factor(userid, user_items, recalculate_user)
  */
-struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct__recommend {
+struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend {
   PyObject_HEAD
   PyObject *__pyx_v_best;
   PyObject *__pyx_v_liked;
 };
 
 
-/* "implicit/recommender_base.pyx":176
+/* "implicit/matrix_factorization_base.pyx":59
  *         else:
  *             best = sorted(enumerate(scores), key=lambda x: -x[1])
  *         return list(itertools.islice((rec for rec in best if rec[0] not in liked), N))             # <<<<<<<<<<<<<<
  * 
  *     @cython.boundscheck(False)
  */
-struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr {
+struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr {
   PyObject_HEAD
-  struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct__recommend *__pyx_outer_scope;
+  struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend *__pyx_outer_scope;
   PyObject *__pyx_v_rec;
   PyObject *__pyx_t_0;
   Py_ssize_t __pyx_t_1;
@@ -1204,6 +1204,15 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject
 /* GetBuiltinName.proto */
 static PyObject *__Pyx_GetBuiltinName(PyObject *name);
 
+/* PyObjectSetAttrStr.proto */
+#if CYTHON_USE_TYPE_SLOTS
+#define __Pyx_PyObject_DelAttrStr(o,n) __Pyx_PyObject_SetAttrStr(o, n, NULL)
+static CYTHON_INLINE int __Pyx_PyObject_SetAttrStr(PyObject* obj, PyObject* attr_name, PyObject* value);
+#else
+#define __Pyx_PyObject_DelAttrStr(o,n)   PyObject_DelAttr(o,n)
+#define __Pyx_PyObject_SetAttrStr(o,n,v) PyObject_SetAttr(o,n,v)
+#endif
+
 /* RaiseArgTupleInvalid.proto */
 static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
     Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found);
@@ -1216,15 +1225,6 @@ static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[],\
     PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args,\
     const char* function_name);
 
-/* PyObjectSetAttrStr.proto */
-#if CYTHON_USE_TYPE_SLOTS
-#define __Pyx_PyObject_DelAttrStr(o,n) __Pyx_PyObject_SetAttrStr(o, n, NULL)
-static CYTHON_INLINE int __Pyx_PyObject_SetAttrStr(PyObject* obj, PyObject* attr_name, PyObject* value);
-#else
-#define __Pyx_PyObject_DelAttrStr(o,n)   PyObject_DelAttr(o,n)
-#define __Pyx_PyObject_SetAttrStr(o,n,v) PyObject_SetAttr(o,n,v)
-#endif
-
 /* GetItemInt.proto */
 #define __Pyx_GetItemInt(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck)\
     (__Pyx_fits_Py_ssize_t(i, type, is_signed) ?\
@@ -2012,9 +2012,9 @@ static PyObject *__pyx_memoryviewslice_assign_item_from_object(struct __pyx_memo
 
 /* Module declarations from 'cython' */
 
-/* Module declarations from 'implicit.recommender_base' */
-static PyTypeObject *__pyx_ptype_8implicit_16recommender_base___pyx_scope_struct__recommend = 0;
-static PyTypeObject *__pyx_ptype_8implicit_16recommender_base___pyx_scope_struct_1_genexpr = 0;
+/* Module declarations from 'implicit.matrix_factorization_base' */
+static PyTypeObject *__pyx_ptype_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend = 0;
+static PyTypeObject *__pyx_ptype_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr = 0;
 static PyTypeObject *__pyx_array_type = 0;
 static PyTypeObject *__pyx_MemviewEnum_type = 0;
 static PyTypeObject *__pyx_memoryview_type = 0;
@@ -2061,12 +2061,11 @@ static void __pyx_memoryview__slice_assign_scalar(char *, Py_ssize_t *, Py_ssize
 static PyObject *__pyx_unpickle_Enum__set_state(struct __pyx_MemviewEnum_obj *, PyObject *); /*proto*/
 static __Pyx_TypeInfo __Pyx_TypeInfo_float = { "float", NULL, sizeof(float), { 0 }, 0, 'R', 0, 0 };
 static __Pyx_TypeInfo __Pyx_TypeInfo_int = { "int", NULL, sizeof(int), { 0 }, 0, IS_UNSIGNED(int) ? 'U' : 'I', IS_UNSIGNED(int), 0 };
-#define __Pyx_MODULE_NAME "implicit.recommender_base"
-extern int __pyx_module_is_main_implicit__recommender_base;
-int __pyx_module_is_main_implicit__recommender_base = 0;
+#define __Pyx_MODULE_NAME "implicit.matrix_factorization_base"
+extern int __pyx_module_is_main_implicit__matrix_factorization_base;
+int __pyx_module_is_main_implicit__matrix_factorization_base = 0;
 
-/* Implementation of 'implicit.recommender_base' */
-static PyObject *__pyx_builtin_object;
+/* Implementation of 'implicit.matrix_factorization_base' */
 static PyObject *__pyx_builtin_property;
 static PyObject *__pyx_builtin_sorted;
 static PyObject *__pyx_builtin_zip;
@@ -2089,10 +2088,8 @@ static const char __pyx_k_c[] = "c";
 static const char __pyx_k_u[] = "u";
 static const char __pyx_k_id[] = "id";
 static const char __pyx_k_np[] = "np";
-static const char __pyx_k_abc[] = "abc";
 static const char __pyx_k_doc[] = "__doc__";
 static const char __pyx_k_dot[] = "dot";
-static const char __pyx_k_fit[] = "fit";
 static const char __pyx_k_ids[] = "ids";
 static const char __pyx_k_key[] = "key";
 static const char __pyx_k_max[] = "max";
@@ -2162,7 +2159,6 @@ static const char __pyx_k_itemid[] = "itemid";
 static const char __pyx_k_linalg[] = "linalg";
 static const char __pyx_k_module[] = "__module__";
 static const char __pyx_k_name_2[] = "__name__";
-static const char __pyx_k_object[] = "object";
 static const char __pyx_k_pickle[] = "pickle";
 static const char __pyx_k_reduce[] = "__reduce__";
 static const char __pyx_k_scores[] = "scores";
@@ -2173,7 +2169,6 @@ static const char __pyx_k_unpack[] = "unpack";
 static const char __pyx_k_update[] = "update";
 static const char __pyx_k_userid[] = "userid";
 static const char __pyx_k_vstack[] = "vstack";
-static const char __pyx_k_ABCMeta[] = "ABCMeta";
 static const char __pyx_k_asarray[] = "asarray";
 static const char __pyx_k_disable[] = "disable";
 static const char __pyx_k_factors[] = "factors";
@@ -2211,7 +2206,6 @@ static const char __pyx_k_ValueError[] = "ValueError";
 static const char __pyx_k_batch_size[] = "batch_size";
 static const char __pyx_k_csr_matrix[] = "csr_matrix";
 static const char __pyx_k_item_norms[] = "_item_norms";
-static const char __pyx_k_item_users[] = "item_users";
 static const char __pyx_k_pyx_result[] = "__pyx_result";
 static const char __pyx_k_pyx_vtable[] = "__pyx_vtable__";
 static const char __pyx_k_rank_items[] = "rank_items";
@@ -2240,7 +2234,6 @@ static const char __pyx_k_show_progress[] = "show_progress";
 static const char __pyx_k_similar_items[] = "similar_items";
 static const char __pyx_k_similar_users[] = "similar_users";
 static const char __pyx_k_users_factors[] = "users_factors";
-static const char __pyx_k_abstractmethod[] = "abstractmethod";
 static const char __pyx_k_selected_items[] = "selected_items";
 static const char __pyx_k_RecommenderBase[] = "RecommenderBase";
 static const char __pyx_k_View_MemoryView[] = "View.MemoryView";
@@ -2254,7 +2247,6 @@ static const char __pyx_k_pyx_unpickle_Enum[] = "__pyx_unpickle_Enum";
 static const char __pyx_k_cline_in_traceback[] = "cline_in_traceback";
 static const char __pyx_k_strided_and_direct[] = "<strided and direct>";
 static const char __pyx_k_NotImplementedError[] = "NotImplementedError";
-static const char __pyx_k_RecommenderBase_fit[] = "RecommenderBase.fit";
 static const char __pyx_k_get_similarity_score[] = "_get_similarity_score";
 static const char __pyx_k_strided_and_indirect[] = "<strided and indirect>";
 static const char __pyx_k_contiguous_and_direct[] = "<contiguous and direct>";
@@ -2264,20 +2256,14 @@ static const char __pyx_k_MemoryView_of_r_at_0x_x[] = "<MemoryView of %r at 0x%x
 static const char __pyx_k_contiguous_and_indirect[] = "<contiguous and indirect>";
 static const char __pyx_k_Cannot_index_with_type_s[] = "Cannot index with type '%s'";
 static const char __pyx_k_Invalid_shape_in_axis_d_d[] = "Invalid shape in axis %d: %d.";
-static const char __pyx_k_RecommenderBase_recommend[] = "RecommenderBase.recommend";
 static const char __pyx_k_implicit_recommender_base[] = "implicit.recommender_base";
-static const char __pyx_k_RecommenderBase_rank_items[] = "RecommenderBase.rank_items";
 static const char __pyx_k_filter_already_liked_items[] = "filter_already_liked_items";
 static const char __pyx_k_filter_items_cannot_filter[] = "filter_items:\\\n                cannot filter ";
 static const char __pyx_k_itemsize_0_for_cython_array[] = "itemsize <= 0 for cython.array";
-static const char __pyx_k_RecommenderBase_similar_items[] = "RecommenderBase.similar_items";
-static const char __pyx_k_RecommenderBase_similar_users[] = "RecommenderBase.similar_users";
-static const char __pyx_k_implicit_recommender_base_pyx[] = "implicit/recommender_base.pyx";
 static const char __pyx_k_unable_to_allocate_array_data[] = "unable to allocate array data.";
-static const char __pyx_k_Defines_the_interface_that_all[] = " Defines the interface that all recommendations models here expose ";
 static const char __pyx_k_MatrixFactorizationBase___init[] = "MatrixFactorizationBase.__init__";
 static const char __pyx_k_strided_and_direct_or_indirect[] = "<strided and direct or indirect>";
-static const char __pyx_k_Base_class_for_recommendation_a[] = " Base class for recommendation algorithms in this package ";
+static const char __pyx_k_Base_class_for_matrix_factoriza[] = " Base class for matrix factorization algorithms in this package ";
 static const char __pyx_k_MatrixFactorizationBase_contain[] = " MatrixFactorizationBase contains common functionality for recommendation models.\n\n    Attributes\n    ----------\n    item_factors : ndarray\n        Array of latent factors for each item in the training set\n    user_factors : ndarray\n        Array of latent factors for each user in the training set\n     ";
 static const char __pyx_k_MatrixFactorizationBase_similar[] = "MatrixFactorizationBase.similar_users";
 static const char __pyx_k_Buffer_view_does_not_expose_stri[] = "Buffer view does not expose strides";
@@ -2300,6 +2286,7 @@ static const char __pyx_k_Some_of_selected_itemids_are_not[] = "Some of selected
 static const char __pyx_k_Unable_to_convert_item_to_object[] = "Unable to convert item to object";
 static const char __pyx_k_filter_already_liked_items_canno[] = "filter_already_liked_items:\\\n                cannot filter ";
 static const char __pyx_k_got_differing_extents_in_dimensi[] = "got differing extents in dimension %d (got %d and %d)";
+static const char __pyx_k_implicit_matrix_factorization_ba[] = "implicit.matrix_factorization_base";
 static const char __pyx_k_no_default___reduce___due_to_non[] = "no default __reduce__ due to non-trivial __cinit__";
 static const char __pyx_k_recalculate_user_is_not_supporte[] = "recalculate_user is not supported with this model";
 static const char __pyx_k_unable_to_allocate_shape_and_str[] = "unable to allocate shape and strides.";
@@ -2309,8 +2296,8 @@ static const char __pyx_k_MatrixFactorizationBase_rank_ite_2[] = "MatrixFactoriz
 static const char __pyx_k_MatrixFactorizationBase_recommen_2[] = "MatrixFactorizationBase.recommend.<locals>.<lambda>";
 static const char __pyx_k_MatrixFactorizationBase_recommen_3[] = "MatrixFactorizationBase.recommend";
 static const char __pyx_k_MatrixFactorizationBase_recommen_4[] = "MatrixFactorizationBase.recommend_all";
+static const char __pyx_k_implicit_matrix_factorization_ba_2[] = "implicit/matrix_factorization_base.pyx";
 static PyObject *__pyx_n_s_A;
-static PyObject *__pyx_n_s_ABCMeta;
 static PyObject *__pyx_n_s_ASCII;
 static PyObject *__pyx_n_s_A_min;
 static PyObject *__pyx_n_s_A_mv;
@@ -2322,7 +2309,6 @@ static PyObject *__pyx_kp_s_Can_only_create_a_buffer_that_is;
 static PyObject *__pyx_kp_s_Cannot_assign_to_read_only_memor;
 static PyObject *__pyx_kp_s_Cannot_create_writable_memory_vi;
 static PyObject *__pyx_kp_s_Cannot_index_with_type_s;
-static PyObject *__pyx_kp_s_Defines_the_interface_that_all;
 static PyObject *__pyx_n_s_Ellipsis;
 static PyObject *__pyx_kp_s_Empty_shape_tuple_for_cython_arr;
 static PyObject *__pyx_kp_s_Incompatible_checksums_s_vs_0xb0;
@@ -2356,19 +2342,12 @@ static PyObject *__pyx_n_b_O;
 static PyObject *__pyx_kp_s_Out_of_bounds_on_buffer_access_a;
 static PyObject *__pyx_n_s_PickleError;
 static PyObject *__pyx_n_s_RecommenderBase;
-static PyObject *__pyx_n_s_RecommenderBase_fit;
-static PyObject *__pyx_n_s_RecommenderBase_rank_items;
-static PyObject *__pyx_n_s_RecommenderBase_recommend;
-static PyObject *__pyx_n_s_RecommenderBase_similar_items;
-static PyObject *__pyx_n_s_RecommenderBase_similar_users;
 static PyObject *__pyx_kp_s_Some_of_selected_itemids_are_not;
 static PyObject *__pyx_n_s_T;
 static PyObject *__pyx_n_s_TypeError;
 static PyObject *__pyx_kp_s_Unable_to_convert_item_to_object;
 static PyObject *__pyx_n_s_ValueError;
 static PyObject *__pyx_n_s_View_MemoryView;
-static PyObject *__pyx_n_s_abc;
-static PyObject *__pyx_n_s_abstractmethod;
 static PyObject *__pyx_n_s_allocate_buffer;
 static PyObject *__pyx_n_s_amin;
 static PyObject *__pyx_kp_u_and_recommend;
@@ -2409,7 +2388,6 @@ static PyObject *__pyx_n_s_filter_already_liked_items;
 static PyObject *__pyx_kp_u_filter_already_liked_items_canno;
 static PyObject *__pyx_n_s_filter_items;
 static PyObject *__pyx_kp_u_filter_items_cannot_filter;
-static PyObject *__pyx_n_s_fit;
 static PyObject *__pyx_n_s_flags;
 static PyObject *__pyx_n_s_float32;
 static PyObject *__pyx_n_s_format;
@@ -2422,8 +2400,9 @@ static PyObject *__pyx_n_s_getstate;
 static PyObject *__pyx_kp_s_got_differing_extents_in_dimensi;
 static PyObject *__pyx_n_s_id;
 static PyObject *__pyx_n_s_ids;
+static PyObject *__pyx_n_s_implicit_matrix_factorization_ba;
+static PyObject *__pyx_kp_s_implicit_matrix_factorization_ba_2;
 static PyObject *__pyx_n_s_implicit_recommender_base;
-static PyObject *__pyx_kp_s_implicit_recommender_base_pyx;
 static PyObject *__pyx_n_s_import;
 static PyObject *__pyx_n_s_indices;
 static PyObject *__pyx_n_s_init;
@@ -2432,7 +2411,6 @@ static PyObject *__pyx_n_s_islice;
 static PyObject *__pyx_n_s_item_factors;
 static PyObject *__pyx_n_s_item_norms;
 static PyObject *__pyx_n_s_item_norms_2;
-static PyObject *__pyx_n_s_item_users;
 static PyObject *__pyx_n_s_itemid;
 static PyObject *__pyx_n_s_items_c;
 static PyObject *__pyx_kp_u_items_out_of;
@@ -2464,7 +2442,6 @@ static PyObject *__pyx_n_s_np;
 static PyObject *__pyx_n_s_num_threads;
 static PyObject *__pyx_n_s_numpy;
 static PyObject *__pyx_n_s_obj;
-static PyObject *__pyx_n_s_object;
 static PyObject *__pyx_n_s_out;
 static PyObject *__pyx_n_s_pack;
 static PyObject *__pyx_n_s_pickle;
@@ -2538,27 +2515,22 @@ static PyObject *__pyx_n_s_users_factors;
 static PyObject *__pyx_n_s_vstack;
 static PyObject *__pyx_n_s_zeros;
 static PyObject *__pyx_n_s_zip;
-static PyObject *__pyx_pf_8implicit_16recommender_base_15RecommenderBase_fit(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_item_users); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_15RecommenderBase_2recommend(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_userid, CYTHON_UNUSED PyObject *__pyx_v_user_items, CYTHON_UNUSED PyObject *__pyx_v_N, CYTHON_UNUSED PyObject *__pyx_v_filter_already_liked_items, CYTHON_UNUSED PyObject *__pyx_v_filter_items, CYTHON_UNUSED PyObject *__pyx_v_recalculate_user); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_15RecommenderBase_4rank_items(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_userid, CYTHON_UNUSED PyObject *__pyx_v_user_items, CYTHON_UNUSED PyObject *__pyx_v_selected_items, CYTHON_UNUSED PyObject *__pyx_v_recalculate_user); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_15RecommenderBase_6similar_users(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_userid, CYTHON_UNUSED PyObject *__pyx_v_N); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_15RecommenderBase_8similar_items(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_itemid, CYTHON_UNUSED PyObject *__pyx_v_N); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase___init__(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase___init__(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self); /* proto */
 static PyObject *__pyx_lambda_funcdef_lambda(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x); /* proto */
 static PyObject *__pyx_lambda_funcdef_lambda1(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_9recommend_2genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_2recommend(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_userid, PyObject *__pyx_v_user_items, PyObject *__pyx_v_N, PyObject *__pyx_v_filter_already_liked_items, PyObject *__pyx_v_filter_items, PyObject *__pyx_v_recalculate_user); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_4recommend_all(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_user_items, int __pyx_v_N, PyObject *__pyx_v_recalculate_user, PyObject *__pyx_v_filter_already_liked_items, PyObject *__pyx_v_filter_items, int __pyx_v_num_threads, PyObject *__pyx_v_show_progress, int __pyx_v_batch_size); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_9recommend_2genexpr(PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_2recommend(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_userid, PyObject *__pyx_v_user_items, PyObject *__pyx_v_N, PyObject *__pyx_v_filter_already_liked_items, PyObject *__pyx_v_filter_items, PyObject *__pyx_v_recalculate_user); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_4recommend_all(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_user_items, int __pyx_v_N, PyObject *__pyx_v_recalculate_user, PyObject *__pyx_v_filter_already_liked_items, PyObject *__pyx_v_filter_items, int __pyx_v_num_threads, PyObject *__pyx_v_show_progress, int __pyx_v_batch_size); /* proto */
 static PyObject *__pyx_lambda_funcdef_lambda3(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_6rank_items(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_userid, PyObject *__pyx_v_user_items, PyObject *__pyx_v_selected_items, PyObject *__pyx_v_recalculate_user); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_8_user_factor(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_userid, PyObject *__pyx_v_user_items, PyObject *__pyx_v_recalculate_user); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_10recalculate_user(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_userid, CYTHON_UNUSED PyObject *__pyx_v_user_items); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_12similar_users(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_userid, PyObject *__pyx_v_N); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_14similar_items(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_itemid, PyObject *__pyx_v_N); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_6rank_items(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_userid, PyObject *__pyx_v_user_items, PyObject *__pyx_v_selected_items, PyObject *__pyx_v_recalculate_user); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_8_user_factor(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_userid, PyObject *__pyx_v_user_items, PyObject *__pyx_v_recalculate_user); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_10recalculate_user(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_userid, CYTHON_UNUSED PyObject *__pyx_v_user_items); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_12similar_users(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_userid, PyObject *__pyx_v_N); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_14similar_items(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self, PyObject *__pyx_v_itemid, PyObject *__pyx_v_N); /* proto */
 static PyObject *__pyx_lambda_funcdef_lambda4(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_16_get_similarity_score(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, PyObject *__pyx_v_factor, PyObject *__pyx_v_factors, PyObject *__pyx_v_norms, PyObject *__pyx_v_N); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_18user_norms(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_8implicit_16recommender_base_23MatrixFactorizationBase_20item_norms(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_16_get_similarity_score(CYTHON_UNUSED PyObject *__pyx_self, CYTHON_UNUSED PyObject *__pyx_v_self, PyObject *__pyx_v_factor, PyObject *__pyx_v_factors, PyObject *__pyx_v_norms, PyObject *__pyx_v_N); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_18user_norms(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_20item_norms(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_self); /* proto */
 static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array___cinit__(struct __pyx_array_obj *__pyx_v_self, PyObject *__pyx_v_shape, Py_ssize_t __pyx_v_itemsize, PyObject *__pyx_v_format, PyObject *__pyx_v_mode, int __pyx_v_allocate_buffer); /* proto */
 static int __pyx_array___pyx_pf_15View_dot_MemoryView_5array_2__getbuffer__(struct __pyx_array_obj *__pyx_v_self, Py_buffer *__pyx_v_info, int __pyx_v_flags); /* proto */
 static void __pyx_array___pyx_pf_15View_dot_MemoryView_5array_4__dealloc__(struct __pyx_array_obj *__pyx_v_self); /* proto */
@@ -2601,8 +2573,8 @@ static PyObject *__pyx_pf_15View_dot_MemoryView_16_memoryviewslice_4base___get__
 static PyObject *__pyx_pf___pyx_memoryviewslice___reduce_cython__(CYTHON_UNUSED struct __pyx_memoryviewslice_obj *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf___pyx_memoryviewslice_2__setstate_cython__(CYTHON_UNUSED struct __pyx_memoryviewslice_obj *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
 static PyObject *__pyx_pf_15View_dot_MemoryView___pyx_unpickle_Enum(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_tp_new_8implicit_16recommender_base___pyx_scope_struct__recommend(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_tp_new_8implicit_16recommender_base___pyx_scope_struct_1_genexpr(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_array(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_Enum(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_memoryview(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
@@ -2635,159 +2607,145 @@ static PyObject *__pyx_tuple__18;
 static PyObject *__pyx_tuple__19;
 static PyObject *__pyx_tuple__20;
 static PyObject *__pyx_tuple__21;
-static PyObject *__pyx_tuple__22;
-static PyObject *__pyx_tuple__24;
+static PyObject *__pyx_tuple__23;
+static PyObject *__pyx_tuple__25;
 static PyObject *__pyx_tuple__26;
-static PyObject *__pyx_tuple__27;
-static PyObject *__pyx_tuple__29;
+static PyObject *__pyx_tuple__28;
 static PyObject *__pyx_tuple__30;
-static PyObject *__pyx_tuple__32;
+static PyObject *__pyx_tuple__31;
 static PyObject *__pyx_tuple__33;
-static PyObject *__pyx_tuple__35;
+static PyObject *__pyx_tuple__34;
 static PyObject *__pyx_tuple__36;
 static PyObject *__pyx_tuple__38;
-static PyObject *__pyx_tuple__40;
+static PyObject *__pyx_tuple__39;
 static PyObject *__pyx_tuple__41;
-static PyObject *__pyx_tuple__43;
-static PyObject *__pyx_tuple__45;
+static PyObject *__pyx_tuple__42;
+static PyObject *__pyx_tuple__44;
 static PyObject *__pyx_tuple__46;
 static PyObject *__pyx_tuple__48;
 static PyObject *__pyx_tuple__49;
+static PyObject *__pyx_tuple__50;
 static PyObject *__pyx_tuple__51;
+static PyObject *__pyx_tuple__52;
 static PyObject *__pyx_tuple__53;
-static PyObject *__pyx_tuple__54;
-static PyObject *__pyx_tuple__56;
-static PyObject *__pyx_tuple__57;
-static PyObject *__pyx_tuple__59;
-static PyObject *__pyx_tuple__61;
-static PyObject *__pyx_tuple__63;
-static PyObject *__pyx_tuple__64;
-static PyObject *__pyx_tuple__65;
-static PyObject *__pyx_tuple__66;
-static PyObject *__pyx_tuple__67;
-static PyObject *__pyx_tuple__68;
-static PyObject *__pyx_codeobj__23;
-static PyObject *__pyx_codeobj__25;
-static PyObject *__pyx_codeobj__28;
-static PyObject *__pyx_codeobj__31;
-static PyObject *__pyx_codeobj__34;
+static PyObject *__pyx_codeobj__22;
+static PyObject *__pyx_codeobj__24;
+static PyObject *__pyx_codeobj__27;
+static PyObject *__pyx_codeobj__29;
+static PyObject *__pyx_codeobj__32;
+static PyObject *__pyx_codeobj__35;
 static PyObject *__pyx_codeobj__37;
-static PyObject *__pyx_codeobj__39;
-static PyObject *__pyx_codeobj__42;
-static PyObject *__pyx_codeobj__44;
+static PyObject *__pyx_codeobj__40;
+static PyObject *__pyx_codeobj__43;
+static PyObject *__pyx_codeobj__45;
 static PyObject *__pyx_codeobj__47;
-static PyObject *__pyx_codeobj__50;
-static PyObject *__pyx_codeobj__52;
-static PyObject *__pyx_codeobj__55;
-static PyObject *__pyx_codeobj__58;
-static PyObject *__pyx_codeobj__60;
-static PyObject *__pyx_codeobj__62;
-static PyObject *__pyx_codeobj__69;
+static PyObject *__pyx_codeobj__54;
 /* Late includes */
 
-/* "implicit/recommender_base.pyx":25
- * 
- *     @abstractmethod
- *     def fit(self, item_users):             # <<<<<<<<<<<<<<
- *         """
- *         Trains the model on a sparse matrix of item/user/weight
+/* "implicit/matrix_factorization_base.pyx":32
+ *         Array of latent factors for each user in the training set
+ *      """
+ *     def __init__(self):             # <<<<<<<<<<<<<<
+ *         # learned parameters
+ *         self.item_factors = None
  */
 
 /* Python wrapper */
-static PyObject *__pyx_pw_8implicit_16recommender_base_15RecommenderBase_1fit(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
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-static PyObject *__pyx_pw_8implicit_16recommender_base_15RecommenderBase_1fit(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
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-  CYTHON_UNUSED PyObject *__pyx_v_item_users = 0;
+static PyObject *__pyx_pw_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_1__init__(PyObject *__pyx_self, PyObject *__pyx_v_self); /*proto*/
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+static PyObject *__pyx_pw_8implicit_25matrix_factorization_base_23MatrixFactorizationBase_1__init__(PyObject *__pyx_self, PyObject *__pyx_v_self) {
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+ *     def recommend(self, userid, user_items,
+ */
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+ *         Array of latent factors for each user in the training set
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+ *         # learned parameters
+ *         self.item_factors = None
+ */
 
   /* function exit code */
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  *                   N=10, filter_already_liked_items=True, filter_items=None, recalculate_user=False):             # <<<<<<<<<<<<<<
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+ * 
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 }
 
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   return 0;
 }
 
-static int __pyx_tp_clear_8implicit_16recommender_base___pyx_scope_struct__recommend(PyObject *o) {
+static int __pyx_tp_clear_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend(PyObject *o) {
   PyObject* tmp;
-  struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct__recommend *p = (struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct__recommend *)o;
+  struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend *p = (struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend *)o;
   tmp = ((PyObject*)p->__pyx_v_best);
   p->__pyx_v_best = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
@@ -20383,12 +19777,12 @@ static int __pyx_tp_clear_8implicit_16recommender_base___pyx_scope_struct__recom
   return 0;
 }
 
-static PyTypeObject __pyx_type_8implicit_16recommender_base___pyx_scope_struct__recommend = {
+static PyTypeObject __pyx_type_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend = {
   PyVarObject_HEAD_INIT(0, 0)
-  "implicit.recommender_base.__pyx_scope_struct__recommend", /*tp_name*/
-  sizeof(struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct__recommend), /*tp_basicsize*/
+  "implicit.matrix_factorization_base.__pyx_scope_struct__recommend", /*tp_name*/
+  sizeof(struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_8implicit_16recommender_base___pyx_scope_struct__recommend, /*tp_dealloc*/
+  __pyx_tp_dealloc_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -20410,8 +19804,8 @@ static PyTypeObject __pyx_type_8implicit_16recommender_base___pyx_scope_struct__
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_8implicit_16recommender_base___pyx_scope_struct__recommend, /*tp_traverse*/
-  __pyx_tp_clear_8implicit_16recommender_base___pyx_scope_struct__recommend, /*tp_clear*/
+  __pyx_tp_traverse_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend, /*tp_traverse*/
+  __pyx_tp_clear_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
@@ -20426,7 +19820,7 @@ static PyTypeObject __pyx_type_8implicit_16recommender_base___pyx_scope_struct__
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_8implicit_16recommender_base___pyx_scope_struct__recommend, /*tp_new*/
+  __pyx_tp_new_8implicit_25matrix_factorization_base___pyx_scope_struct__recommend, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -20444,14 +19838,14 @@ static PyTypeObject __pyx_type_8implicit_16recommender_base___pyx_scope_struct__
   #endif
 };
 
-static struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr *__pyx_freelist_8implicit_16recommender_base___pyx_scope_struct_1_genexpr[8];
-static int __pyx_freecount_8implicit_16recommender_base___pyx_scope_struct_1_genexpr = 0;
+static struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr *__pyx_freelist_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr[8];
+static int __pyx_freecount_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr = 0;
 
-static PyObject *__pyx_tp_new_8implicit_16recommender_base___pyx_scope_struct_1_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+static PyObject *__pyx_tp_new_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o;
-  if (CYTHON_COMPILING_IN_CPYTHON && likely((__pyx_freecount_8implicit_16recommender_base___pyx_scope_struct_1_genexpr > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr)))) {
-    o = (PyObject*)__pyx_freelist_8implicit_16recommender_base___pyx_scope_struct_1_genexpr[--__pyx_freecount_8implicit_16recommender_base___pyx_scope_struct_1_genexpr];
-    memset(o, 0, sizeof(struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr));
+  if (CYTHON_COMPILING_IN_CPYTHON && likely((__pyx_freecount_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr > 0) & (t->tp_basicsize == sizeof(struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr)))) {
+    o = (PyObject*)__pyx_freelist_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr[--__pyx_freecount_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr];
+    memset(o, 0, sizeof(struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr));
     (void) PyObject_INIT(o, t);
     PyObject_GC_Track(o);
   } else {
@@ -20461,22 +19855,22 @@ static PyObject *__pyx_tp_new_8implicit_16recommender_base___pyx_scope_struct_1_
   return o;
 }
 
-static void __pyx_tp_dealloc_8implicit_16recommender_base___pyx_scope_struct_1_genexpr(PyObject *o) {
-  struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr *p = (struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr *)o;
+static void __pyx_tp_dealloc_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr(PyObject *o) {
+  struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr *p = (struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr *)o;
   PyObject_GC_UnTrack(o);
   Py_CLEAR(p->__pyx_outer_scope);
   Py_CLEAR(p->__pyx_v_rec);
   Py_CLEAR(p->__pyx_t_0);
-  if (CYTHON_COMPILING_IN_CPYTHON && ((__pyx_freecount_8implicit_16recommender_base___pyx_scope_struct_1_genexpr < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr)))) {
-    __pyx_freelist_8implicit_16recommender_base___pyx_scope_struct_1_genexpr[__pyx_freecount_8implicit_16recommender_base___pyx_scope_struct_1_genexpr++] = ((struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr *)o);
+  if (CYTHON_COMPILING_IN_CPYTHON && ((__pyx_freecount_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr < 8) & (Py_TYPE(o)->tp_basicsize == sizeof(struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr)))) {
+    __pyx_freelist_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr[__pyx_freecount_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr++] = ((struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr *)o);
   } else {
     (*Py_TYPE(o)->tp_free)(o);
   }
 }
 
-static int __pyx_tp_traverse_8implicit_16recommender_base___pyx_scope_struct_1_genexpr(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr *p = (struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr *)o;
+  struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr *p = (struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr *)o;
   if (p->__pyx_outer_scope) {
     e = (*v)(((PyObject *)p->__pyx_outer_scope), a); if (e) return e;
   }
@@ -20489,12 +19883,12 @@ static int __pyx_tp_traverse_8implicit_16recommender_base___pyx_scope_struct_1_g
   return 0;
 }
 
-static PyTypeObject __pyx_type_8implicit_16recommender_base___pyx_scope_struct_1_genexpr = {
+static PyTypeObject __pyx_type_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  "implicit.recommender_base.__pyx_scope_struct_1_genexpr", /*tp_name*/
-  sizeof(struct __pyx_obj_8implicit_16recommender_base___pyx_scope_struct_1_genexpr), /*tp_basicsize*/
+  "implicit.matrix_factorization_base.__pyx_scope_struct_1_genexpr", /*tp_name*/
+  sizeof(struct __pyx_obj_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_8implicit_16recommender_base___pyx_scope_struct_1_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -20516,7 +19910,7 @@ static PyTypeObject __pyx_type_8implicit_16recommender_base___pyx_scope_struct_1
   0, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_8implicit_16recommender_base___pyx_scope_struct_1_genexpr, /*tp_traverse*/
+  __pyx_tp_traverse_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr, /*tp_traverse*/
   0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
@@ -20532,7 +19926,7 @@ static PyTypeObject __pyx_type_8implicit_16recommender_base___pyx_scope_struct_1
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_8implicit_16recommender_base___pyx_scope_struct_1_genexpr, /*tp_new*/
+  __pyx_tp_new_8implicit_25matrix_factorization_base___pyx_scope_struct_1_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -20672,7 +20066,7 @@ static PyBufferProcs __pyx_tp_as_buffer_array = {
 
 static PyTypeObject __pyx_type___pyx_array = {
   PyVarObject_HEAD_INIT(0, 0)
-  "implicit.recommender_base.array", /*tp_name*/
+  "implicit.matrix_factorization_base.array", /*tp_name*/
   sizeof(struct __pyx_array_obj), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_array, /*tp_dealloc*/
@@ -20783,7 +20177,7 @@ static PyMethodDef __pyx_methods_Enum[] = {
 
 static PyTypeObject __pyx_type___pyx_MemviewEnum = {
   PyVarObject_HEAD_INIT(0, 0)
-  "implicit.recommender_base.Enum", /*tp_name*/
+  "implicit.matrix_factorization_base.Enum", /*tp_name*/
   sizeof(struct __pyx_MemviewEnum_obj), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_Enum, /*tp_dealloc*/
@@ -21036,7 +20430,7 @@ static PyBufferProcs __pyx_tp_as_buffer_memoryview = {
 
 static PyTypeObject __pyx_type___pyx_memoryview = {
   PyVarObject_HEAD_INIT(0, 0)
-  "implicit.recommender_base.memoryview", /*tp_name*/
+  "implicit.matrix_factorization_base.memoryview", /*tp_name*/
   sizeof(struct __pyx_memoryview_obj), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_memoryview, /*tp_dealloc*/
@@ -21166,7 +20560,7 @@ static struct PyGetSetDef __pyx_getsets__memoryviewslice[] = {
 
 static PyTypeObject __pyx_type___pyx_memoryviewslice = {
   PyVarObject_HEAD_INIT(0, 0)
-  "implicit.recommender_base._memoryviewslice", /*tp_name*/
+  "implicit.matrix_factorization_base._memoryviewslice", /*tp_name*/
   sizeof(struct __pyx_memoryviewslice_obj), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc__memoryviewslice, /*tp_dealloc*/
@@ -21240,18 +20634,18 @@ static PyMethodDef __pyx_methods[] = {
 #if PY_MAJOR_VERSION >= 3
 #if CYTHON_PEP489_MULTI_PHASE_INIT
 static PyObject* __pyx_pymod_create(PyObject *spec, PyModuleDef *def); /*proto*/
-static int __pyx_pymod_exec_recommender_base(PyObject* module); /*proto*/
+static int __pyx_pymod_exec_matrix_factorization_base(PyObject* module); /*proto*/
 static PyModuleDef_Slot __pyx_moduledef_slots[] = {
   {Py_mod_create, (void*)__pyx_pymod_create},
-  {Py_mod_exec, (void*)__pyx_pymod_exec_recommender_base},
+  {Py_mod_exec, (void*)__pyx_pymod_exec_matrix_factorization_base},
   {0, NULL}
 };
 #endif
 
 static struct PyModuleDef __pyx_moduledef = {
     PyModuleDef_HEAD_INIT,
-    "recommender_base",
-    __pyx_k_Base_class_for_recommendation_a, /* m_doc */
+    "matrix_factorization_base",
+    __pyx_k_Base_class_for_matrix_factoriza, /* m_doc */
   #if CYTHON_PEP489_MULTI_PHASE_INIT
     0, /* m_size */
   #else
@@ -21280,7 +20674,6 @@ static struct PyModuleDef __pyx_moduledef = {
 
 static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s_A, __pyx_k_A, sizeof(__pyx_k_A), 0, 0, 1, 1},
-  {&__pyx_n_s_ABCMeta, __pyx_k_ABCMeta, sizeof(__pyx_k_ABCMeta), 0, 0, 1, 1},
   {&__pyx_n_s_ASCII, __pyx_k_ASCII, sizeof(__pyx_k_ASCII), 0, 0, 1, 1},
   {&__pyx_n_s_A_min, __pyx_k_A_min, sizeof(__pyx_k_A_min), 0, 0, 1, 1},
   {&__pyx_n_s_A_mv, __pyx_k_A_mv, sizeof(__pyx_k_A_mv), 0, 0, 1, 1},
@@ -21292,7 +20685,6 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_kp_s_Cannot_assign_to_read_only_memor, __pyx_k_Cannot_assign_to_read_only_memor, sizeof(__pyx_k_Cannot_assign_to_read_only_memor), 0, 0, 1, 0},
   {&__pyx_kp_s_Cannot_create_writable_memory_vi, __pyx_k_Cannot_create_writable_memory_vi, sizeof(__pyx_k_Cannot_create_writable_memory_vi), 0, 0, 1, 0},
   {&__pyx_kp_s_Cannot_index_with_type_s, __pyx_k_Cannot_index_with_type_s, sizeof(__pyx_k_Cannot_index_with_type_s), 0, 0, 1, 0},
-  {&__pyx_kp_s_Defines_the_interface_that_all, __pyx_k_Defines_the_interface_that_all, sizeof(__pyx_k_Defines_the_interface_that_all), 0, 0, 1, 0},
   {&__pyx_n_s_Ellipsis, __pyx_k_Ellipsis, sizeof(__pyx_k_Ellipsis), 0, 0, 1, 1},
   {&__pyx_kp_s_Empty_shape_tuple_for_cython_arr, __pyx_k_Empty_shape_tuple_for_cython_arr, sizeof(__pyx_k_Empty_shape_tuple_for_cython_arr), 0, 0, 1, 0},
   {&__pyx_kp_s_Incompatible_checksums_s_vs_0xb0, __pyx_k_Incompatible_checksums_s_vs_0xb0, sizeof(__pyx_k_Incompatible_checksums_s_vs_0xb0), 0, 0, 1, 0},
@@ -21326,19 +20718,12 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_kp_s_Out_of_bounds_on_buffer_access_a, __pyx_k_Out_of_bounds_on_buffer_access_a, sizeof(__pyx_k_Out_of_bounds_on_buffer_access_a), 0, 0, 1, 0},
   {&__pyx_n_s_PickleError, __pyx_k_PickleError, sizeof(__pyx_k_PickleError), 0, 0, 1, 1},
   {&__pyx_n_s_RecommenderBase, __pyx_k_RecommenderBase, sizeof(__pyx_k_RecommenderBase), 0, 0, 1, 1},
-  {&__pyx_n_s_RecommenderBase_fit, __pyx_k_RecommenderBase_fit, sizeof(__pyx_k_RecommenderBase_fit), 0, 0, 1, 1},
-  {&__pyx_n_s_RecommenderBase_rank_items, __pyx_k_RecommenderBase_rank_items, sizeof(__pyx_k_RecommenderBase_rank_items), 0, 0, 1, 1},
-  {&__pyx_n_s_RecommenderBase_recommend, __pyx_k_RecommenderBase_recommend, sizeof(__pyx_k_RecommenderBase_recommend), 0, 0, 1, 1},
-  {&__pyx_n_s_RecommenderBase_similar_items, __pyx_k_RecommenderBase_similar_items, sizeof(__pyx_k_RecommenderBase_similar_items), 0, 0, 1, 1},
-  {&__pyx_n_s_RecommenderBase_similar_users, __pyx_k_RecommenderBase_similar_users, sizeof(__pyx_k_RecommenderBase_similar_users), 0, 0, 1, 1},
   {&__pyx_kp_s_Some_of_selected_itemids_are_not, __pyx_k_Some_of_selected_itemids_are_not, sizeof(__pyx_k_Some_of_selected_itemids_are_not), 0, 0, 1, 0},
   {&__pyx_n_s_T, __pyx_k_T, sizeof(__pyx_k_T), 0, 0, 1, 1},
   {&__pyx_n_s_TypeError, __pyx_k_TypeError, sizeof(__pyx_k_TypeError), 0, 0, 1, 1},
   {&__pyx_kp_s_Unable_to_convert_item_to_object, __pyx_k_Unable_to_convert_item_to_object, sizeof(__pyx_k_Unable_to_convert_item_to_object), 0, 0, 1, 0},
   {&__pyx_n_s_ValueError, __pyx_k_ValueError, sizeof(__pyx_k_ValueError), 0, 0, 1, 1},
   {&__pyx_n_s_View_MemoryView, __pyx_k_View_MemoryView, sizeof(__pyx_k_View_MemoryView), 0, 0, 1, 1},
-  {&__pyx_n_s_abc, __pyx_k_abc, sizeof(__pyx_k_abc), 0, 0, 1, 1},
-  {&__pyx_n_s_abstractmethod, __pyx_k_abstractmethod, sizeof(__pyx_k_abstractmethod), 0, 0, 1, 1},
   {&__pyx_n_s_allocate_buffer, __pyx_k_allocate_buffer, sizeof(__pyx_k_allocate_buffer), 0, 0, 1, 1},
   {&__pyx_n_s_amin, __pyx_k_amin, sizeof(__pyx_k_amin), 0, 0, 1, 1},
   {&__pyx_kp_u_and_recommend, __pyx_k_and_recommend, sizeof(__pyx_k_and_recommend), 0, 1, 0, 0},
@@ -21379,7 +20764,6 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_kp_u_filter_already_liked_items_canno, __pyx_k_filter_already_liked_items_canno, sizeof(__pyx_k_filter_already_liked_items_canno), 0, 1, 0, 0},
   {&__pyx_n_s_filter_items, __pyx_k_filter_items, sizeof(__pyx_k_filter_items), 0, 0, 1, 1},
   {&__pyx_kp_u_filter_items_cannot_filter, __pyx_k_filter_items_cannot_filter, sizeof(__pyx_k_filter_items_cannot_filter), 0, 1, 0, 0},
-  {&__pyx_n_s_fit, __pyx_k_fit, sizeof(__pyx_k_fit), 0, 0, 1, 1},
   {&__pyx_n_s_flags, __pyx_k_flags, sizeof(__pyx_k_flags), 0, 0, 1, 1},
   {&__pyx_n_s_float32, __pyx_k_float32, sizeof(__pyx_k_float32), 0, 0, 1, 1},
   {&__pyx_n_s_format, __pyx_k_format, sizeof(__pyx_k_format), 0, 0, 1, 1},
@@ -21392,8 +20776,9 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_kp_s_got_differing_extents_in_dimensi, __pyx_k_got_differing_extents_in_dimensi, sizeof(__pyx_k_got_differing_extents_in_dimensi), 0, 0, 1, 0},
   {&__pyx_n_s_id, __pyx_k_id, sizeof(__pyx_k_id), 0, 0, 1, 1},
   {&__pyx_n_s_ids, __pyx_k_ids, sizeof(__pyx_k_ids), 0, 0, 1, 1},
+  {&__pyx_n_s_implicit_matrix_factorization_ba, __pyx_k_implicit_matrix_factorization_ba, sizeof(__pyx_k_implicit_matrix_factorization_ba), 0, 0, 1, 1},
+  {&__pyx_kp_s_implicit_matrix_factorization_ba_2, __pyx_k_implicit_matrix_factorization_ba_2, sizeof(__pyx_k_implicit_matrix_factorization_ba_2), 0, 0, 1, 0},
   {&__pyx_n_s_implicit_recommender_base, __pyx_k_implicit_recommender_base, sizeof(__pyx_k_implicit_recommender_base), 0, 0, 1, 1},
-  {&__pyx_kp_s_implicit_recommender_base_pyx, __pyx_k_implicit_recommender_base_pyx, sizeof(__pyx_k_implicit_recommender_base_pyx), 0, 0, 1, 0},
   {&__pyx_n_s_import, __pyx_k_import, sizeof(__pyx_k_import), 0, 0, 1, 1},
   {&__pyx_n_s_indices, __pyx_k_indices, sizeof(__pyx_k_indices), 0, 0, 1, 1},
   {&__pyx_n_s_init, __pyx_k_init, sizeof(__pyx_k_init), 0, 0, 1, 1},
@@ -21402,7 +20787,6 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s_item_factors, __pyx_k_item_factors, sizeof(__pyx_k_item_factors), 0, 0, 1, 1},
   {&__pyx_n_s_item_norms, __pyx_k_item_norms, sizeof(__pyx_k_item_norms), 0, 0, 1, 1},
   {&__pyx_n_s_item_norms_2, __pyx_k_item_norms_2, sizeof(__pyx_k_item_norms_2), 0, 0, 1, 1},
-  {&__pyx_n_s_item_users, __pyx_k_item_users, sizeof(__pyx_k_item_users), 0, 0, 1, 1},
   {&__pyx_n_s_itemid, __pyx_k_itemid, sizeof(__pyx_k_itemid), 0, 0, 1, 1},
   {&__pyx_n_s_items_c, __pyx_k_items_c, sizeof(__pyx_k_items_c), 0, 0, 1, 1},
   {&__pyx_kp_u_items_out_of, __pyx_k_items_out_of, sizeof(__pyx_k_items_out_of), 0, 1, 0, 0},
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diff --git a/implicit/recommender_base.pyx b/implicit/matrix_factorization_base.pyx
similarity index 69%
rename from implicit/recommender_base.pyx
rename to implicit/matrix_factorization_base.pyx
index 96bfd1fa..af7deb8e 100644
--- a/implicit/recommender_base.pyx
+++ b/implicit/matrix_factorization_base.pyx
@@ -1,9 +1,8 @@
-""" Base class for recommendation algorithms in this package """
+""" Base class for matrix factorization algorithms in this package """
 # distutils: language = c++
 # cython: language_level=3
 
 import itertools
-from abc import ABCMeta, abstractmethod
 from tqdm.auto import tqdm
 import numpy as np
 import multiprocessing
@@ -12,130 +11,14 @@ import cython
 from cython.parallel import prange
 from math import ceil
 
+from implicit.recommender_base import RecommenderBase
+
+
 # Define wrapper for C++ sorting function
 cdef extern from "topnc.h":
     cdef void fargsort_c(float A[], int n_row, int m_row, int m_cols, int ktop, int B[]) nogil
 
 
-class RecommenderBase(object):
-    """ Defines the interface that all recommendations models here expose """
-    __metaclass__ = ABCMeta
-
-    @abstractmethod
-    def fit(self, item_users):
-        """
-        Trains the model on a sparse matrix of item/user/weight
-
-        Parameters
-        ----------
-        item_user : csr_matrix
-            A matrix of shape (number_of_items, number_of_users). The nonzero
-            entries in this matrix are the items that are liked by each user.
-            The values are how confidant you are that the item is liked by the user.
-        """
-        pass
-
-    @abstractmethod
-    def recommend(self, userid, user_items,
-                  N=10, filter_already_liked_items=True, filter_items=None, recalculate_user=False):
-        """
-        Recommends items for a user
-
-        Calculates the N best recommendations for a user, and returns a list of itemids, score.
-
-        Parameters
-        ----------
-        userid : int
-            The userid to calculate recommendations for
-        user_items : csr_matrix
-            A sparse matrix of shape (number_users, number_items). This lets us look
-            up the liked items and their weights for the user. This is used to filter out
-            items that have already been liked from the output, and to also potentially
-            calculate the best items for this user.
-        N : int, optional
-            The number of results to return
-        filter_already_liked_items: bool, optional
-            When true, don't return items present in the training set that were rated
-            by the specificed user.
-        filter_items : sequence of ints, optional
-            List of extra item ids to filter out from the output
-        recalculate_user : bool, optional
-            When true, don't rely on stored user state and instead recalculate from the
-            passed in user_items
-
-        Returns
-        -------
-        list
-            List of (itemid, score) tuples
-        """
-        pass
-
-    @abstractmethod
-    def rank_items(self, userid, user_items, selected_items, recalculate_user=False):
-        """
-        Rank given items for a user and returns sorted item list.
-
-        Parameters
-        ----------
-        userid : int
-            The userid to calculate recommendations for
-        user_items : csr_matrix
-            A sparse matrix of shape (number_users, number_items). This lets us look
-            up the liked items and their weights for the user. This is used to filter out
-            items that have already been liked from the output, and to also potentially
-            calculate the best items for this user.
-        selected_items : List of itemids
-        recalculate_user : bool, optional
-            When true, don't rely on stored user state and instead recalculate from the
-            passed in user_items
-
-        Returns
-        -------
-        list
-            List of (itemid, score) tuples. it only contains items that appears in
-            input parameter selected_items
-        """
-        pass
-
-    @abstractmethod
-    def similar_users(self, userid, N=10):
-        """
-        Calculates a list of similar users
-
-        Parameters
-        ----------
-        userid : int
-            The row id of the user to retrieve similar users for
-        N : int, optional
-            The number of similar users to return
-
-        Returns
-        -------
-        list
-            List of (userid, score) tuples
-        """
-        pass
-
-    @abstractmethod
-    def similar_items(self, itemid, N=10):
-        """
-        Calculates a list of similar items
-
-        Parameters
-        ----------
-        itemid : int
-            The row id of the item to retrieve similar items for
-        N : int, optional
-            The number of similar items to return
-
-        Returns
-        -------
-        list
-            List of (itemid, score) tuples
-        """
-        pass
-
-
 class MatrixFactorizationBase(RecommenderBase):
     """ MatrixFactorizationBase contains common functionality for recommendation models.
 
diff --git a/implicit/recommender_base.py b/implicit/recommender_base.py
new file mode 100644
index 00000000..9aead94a
--- /dev/null
+++ b/implicit/recommender_base.py
@@ -0,0 +1,122 @@
+""" Base class for recommendation algorithms in this package """
+
+from abc import ABCMeta, abstractmethod
+
+
+class RecommenderBase(object):
+    """ Defines the interface that all recommendations models here expose """
+    __metaclass__ = ABCMeta
+
+    @abstractmethod
+    def fit(self, item_users):
+        """
+        Trains the model on a sparse matrix of item/user/weight
+
+        Parameters
+        ----------
+        item_user : csr_matrix
+            A matrix of shape (number_of_items, number_of_users). The nonzero
+            entries in this matrix are the items that are liked by each user.
+            The values are how confidant you are that the item is liked by the user.
+        """
+        pass
+
+    @abstractmethod
+    def recommend(self, userid, user_items,
+                  N=10, filter_already_liked_items=True, filter_items=None, recalculate_user=False):
+        """
+        Recommends items for a user
+
+        Calculates the N best recommendations for a user, and returns a list of itemids, score.
+
+        Parameters
+        ----------
+        userid : int
+            The userid to calculate recommendations for
+        user_items : csr_matrix
+            A sparse matrix of shape (number_users, number_items). This lets us look
+            up the liked items and their weights for the user. This is used to filter out
+            items that have already been liked from the output, and to also potentially
+            calculate the best items for this user.
+        N : int, optional
+            The number of results to return
+        filter_already_liked_items: bool, optional
+            When true, don't return items present in the training set that were rated
+            by the specificed user.
+        filter_items : sequence of ints, optional
+            List of extra item ids to filter out from the output
+        recalculate_user : bool, optional
+            When true, don't rely on stored user state and instead recalculate from the
+            passed in user_items
+
+        Returns
+        -------
+        list
+            List of (itemid, score) tuples
+        """
+        pass
+
+    @abstractmethod
+    def rank_items(self, userid, user_items, selected_items, recalculate_user=False):
+        """
+        Rank given items for a user and returns sorted item list.
+
+        Parameters
+        ----------
+        userid : int
+            The userid to calculate recommendations for
+        user_items : csr_matrix
+            A sparse matrix of shape (number_users, number_items). This lets us look
+            up the liked items and their weights for the user. This is used to filter out
+            items that have already been liked from the output, and to also potentially
+            calculate the best items for this user.
+        selected_items : List of itemids
+        recalculate_user : bool, optional
+            When true, don't rely on stored user state and instead recalculate from the
+            passed in user_items
+
+        Returns
+        -------
+        list
+            List of (itemid, score) tuples. it only contains items that appears in
+            input parameter selected_items
+        """
+        pass
+
+    @abstractmethod
+    def similar_users(self, userid, N=10):
+        """
+        Calculates a list of similar users
+
+        Parameters
+        ----------
+        userid : int
+            The row id of the user to retrieve similar users for
+        N : int, optional
+            The number of similar users to return
+
+        Returns
+        -------
+        list
+            List of (userid, score) tuples
+        """
+        pass
+
+    @abstractmethod
+    def similar_items(self, itemid, N=10):
+        """
+        Calculates a list of similar items
+
+        Parameters
+        ----------
+        itemid : int
+            The row id of the item to retrieve similar items for
+        N : int, optional
+            The number of similar items to return
+
+        Returns
+        -------
+        list
+            List of (itemid, score) tuples
+        """
+        pass
diff --git a/setup.py b/setup.py
index f427a7aa..1ee52719 100644
--- a/setup.py
+++ b/setup.py
@@ -53,8 +53,8 @@ def define_extensions(use_cython=False):
                          language='c++',
                          extra_compile_args=compile_args, extra_link_args=link_args)
                for name in ['_als', '_nearest_neighbours', 'bpr', 'lmf', 'evaluation']]
-    modules.append(Extension("implicit." + 'recommender_base',
-                             [os.path.join("implicit", 'recommender_base' + src_ext),
+    modules.append(Extension("implicit." + 'matrix_factorization_base',
+                             [os.path.join("implicit", 'matrix_factorization_base' + src_ext),
                               os.path.join("implicit", 'topnc.cpp')],
                              language='c++',
                              extra_compile_args=compile_args, extra_link_args=link_args))