arrayfire · pavanky · Sep 13, 2015 · Aug 29, 2015 · Aug 29, 2015 · Sep 2, 2015
diff --git a/CMakeModules/FindCBLAS.cmake b/CMakeModules/FindCBLAS.cmake
@@ -21,6 +21,29 @@ SET(CBLAS_INCLUDE_DIR CACHE STRING
 SET(CBLAS_INCLUDE_FILE CACHE STRING
   "CBLAS header name")
 
+
+# If a valid PkgConfig configuration for cblas is found, this overrides and cancels
+# all further checks.
+FIND_PACKAGE(PkgConfig)
+IF(PKG_CONFIG_FOUND)
+  PKG_CHECK_MODULES(PC_CBLAS cblas)
+ENDIF(PKG_CONFIG_FOUND)
+
+IF(PC_CBLAS_FOUND)
+
+  FOREACH(PC_LIB ${PC_CBLAS_LIBRARIES})
+    FIND_LIBRARY(${PC_LIB}_LIBRARY NAMES ${PC_LIB} HINTS ${PC_CBLAS_LIBRARY_DIRS} )
+    IF (NOT ${PC_LIB}_LIBRARY)
+      message(FATAL_ERROR "Something is wrong in your pkg-config file - lib ${PC_LIB} not found in ${PC_CBLAS_LIBRARY_DIRS}")
+    ENDIF (NOT ${PC_LIB}_LIBRARY)
+    LIST(APPEND CBLAS_LIBRARIES ${${PC_LIB}_LIBRARY}) 
+  ENDFOREACH(PC_LIB)
+
+  FIND_PACKAGE_HANDLE_STANDARD_ARGS(CBLAS DEFAULT_MSG CBLAS_LIBRARIES)
+  MARK_AS_ADVANCED(CBLAS_LIBRARIES)
+
+ELSE(PC_CBLAS_FOUND)
+
 SET(INTEL_MKL_ROOT_DIR CACHE STRING
   "Root directory of the Intel MKL")
 
@@ -277,3 +300,5 @@ IF(NOT CBLAS_FIND_QUIETLY)
     MESSAGE(STATUS "CBLAS library not found.")
   ENDIF()
 ENDIF(NOT CBLAS_FIND_QUIETLY)
+
+ENDIF(PC_CBLAS_FOUND)
diff --git a/CMakeModules/FindLAPACKE.cmake b/CMakeModules/FindLAPACKE.cmake
@@ -18,78 +18,106 @@ FIND_PACKAGE(PkgConfig)
 
 #Determine from PKG
 IF(PKG_CONFIG_FOUND AND NOT LAPACKE_ROOT)
-  PKG_CHECK_MODULES( PKG_LAPACKE QUIET "lapacke")
+  PKG_CHECK_MODULES( PC_LAPACKE QUIET "lapacke")
 ENDIF()
 
-IF(LAPACKE_ROOT)
-    #find libs
-    FIND_LIBRARY(
-        LAPACKE_LIB
-        NAMES "lapacke" "LAPACKE" "liblapacke"
-        PATHS ${LAPACKE_ROOT}
-        PATH_SUFFIXES "lib" "lib64"
-        DOC "LAPACKE Library"
-        NO_DEFAULT_PATH
-        )
-    FIND_LIBRARY(
-        LAPACK_LIB
-        NAMES "lapack" "LAPACK" "liblapack"
-        PATHS ${LAPACKE_ROOT}
-        PATH_SUFFIXES "lib" "lib64"
-        DOC "LAPACK Library"
-        NO_DEFAULT_PATH
-        )
-    FIND_PATH(
-        LAPACKE_INCLUDES
-        NAMES "lapacke.h"
-        PATHS ${LAPACKE_ROOT}
-        PATH_SUFFIXES "include"
-        DOC "LAPACKE Include Directory"
-        NO_DEFAULT_PATH
-        )
+IF(PC_LAPACKE_FOUND)
+    FOREACH(PC_LIB ${PC_LAPACKE_LIBRARIES})
+      FIND_LIBRARY(${PC_LIB}_LIBRARY NAMES ${PC_LIB} HINTS ${PC_LAPACKE_LIBRARY_DIRS} )
+      IF (NOT ${PC_LIB}_LIBRARY)
+        MESSAGE(FATAL_ERROR "Something is wrong in your pkg-config file - lib ${PC_LIB} not found in ${PC_LAPACKE_LIBRARY_DIRS}")
+      ENDIF (NOT ${PC_LIB}_LIBRARY)
+      LIST(APPEND LAPACKE_LIB ${${PC_LIB}_LIBRARY}) 
+    ENDFOREACH(PC_LIB)
 
-ELSE()
-    FIND_LIBRARY(
-        LAPACKE_LIB
-        NAMES "lapacke" "liblapacke"
-        PATHS
-        ${PKG_LAPACKE_LIBRARY_DIRS}
-        ${LIB_INSTALL_DIR}
-        /usr/lib64
-        /usr/lib
-        /usr/local/lib64
-        /usr/local/lib
-        /sw/lib
-        /opt/local/lib
-        DOC "LAPACKE Library"
-        )
-    FIND_LIBRARY(
-       LAPACK_LIB
-        NAMES "lapack" "liblapack"
-        PATHS
-        ${PKG_LAPACKE_LIBRARY_DIRS}
-        ${LIB_INSTALL_DIR}
-        /usr/lib64
-        /usr/lib
-        /usr/local/lib64
-        /usr/local/lib
-        /sw/lib
-        /opt/local/lib
-        DOC "LAPACK Library"
-        )
     FIND_PATH(
         LAPACKE_INCLUDES
         NAMES "lapacke.h"
         PATHS
-        ${PKG_LAPACKE_INCLUDE_DIRS}
+        ${PC_LAPACKE_INCLUDE_DIRS}
         ${INCLUDE_INSTALL_DIR}
         /usr/include
         /usr/local/include
         /sw/include
         /opt/local/include
         DOC "LAPACKE Include Directory"
         )
-ENDIF(LAPACKE_ROOT)
+
+    FIND_PACKAGE_HANDLE_STANDARD_ARGS(LAPACKE DEFAULT_MSG LAPACKE_LIB)
+    MARK_AS_ADVANCED(LAPACKE_INCLUDES LAPACKE_LIB)
+
+ELSE(PC_LAPACKE_FOUND)
+
+    IF(LAPACKE_ROOT)
+        #find libs
+        FIND_LIBRARY(
+            LAPACKE_LIB
+            NAMES "lapacke" "LAPACKE" "liblapacke"
+            PATHS ${LAPACKE_ROOT}
+            PATH_SUFFIXES "lib" "lib64"
+            DOC "LAPACKE Library"
+            NO_DEFAULT_PATH
+            )
+        FIND_LIBRARY(
+            LAPACK_LIB
+            NAMES "lapack" "LAPACK" "liblapack"
+            PATHS ${LAPACKE_ROOT}
+            PATH_SUFFIXES "lib" "lib64"
+            DOC "LAPACK Library"
+            NO_DEFAULT_PATH
+            )
+        FIND_PATH(
+            LAPACKE_INCLUDES
+            NAMES "lapacke.h"
+            PATHS ${LAPACKE_ROOT}
+            PATH_SUFFIXES "include"
+            DOC "LAPACKE Include Directory"
+            NO_DEFAULT_PATH
+            )
+
+    ELSE()
+        FIND_LIBRARY(
+            LAPACKE_LIB
+            NAMES "lapacke" "liblapacke"
+            PATHS
+            ${PC_LAPACKE_LIBRARY_DIRS}
+            ${LIB_INSTALL_DIR}
+            /usr/lib64
+            /usr/lib
+            /usr/local/lib64
+            /usr/local/lib
+            /sw/lib
+            /opt/local/lib
+            DOC "LAPACKE Library"
+            )
+        FIND_LIBRARY(
+           LAPACK_LIB
+            NAMES "lapack" "liblapack"
+            PATHS
+            ${PC_LAPACKE_LIBRARY_DIRS}
+            ${LIB_INSTALL_DIR}
+            /usr/lib64
+            /usr/lib
+            /usr/local/lib64
+            /usr/local/lib
+            /sw/lib
+            /opt/local/lib
+            DOC "LAPACK Library"
+            )
+        FIND_PATH(
+            LAPACKE_INCLUDES
+            NAMES "lapacke.h"
+            PATHS
+            ${PC_LAPACKE_INCLUDE_DIRS}
+            ${INCLUDE_INSTALL_DIR}
+            /usr/include
+            /usr/local/include
+            /sw/include
+            /opt/local/include
+            DOC "LAPACKE Include Directory"
+            )
+    ENDIF(LAPACKE_ROOT)
+ENDIF(PC_LAPACKE_FOUND)
 
 SET(LAPACK_LIBRARIES ${LAPACKE_LIB} ${LAPACK_LIB})
 SET(LAPACK_INCLUDE_DIR ${LAPACKE_INCLUDES})

diff --git a/CMakeModules/Version.cmake b/CMakeModules/Version.cmake
@@ -3,7 +3,7 @@
 #
 SET(AF_VERSION_MAJOR "3")
 SET(AF_VERSION_MINOR "1")
-SET(AF_VERSION_PATCH "0")
+SET(AF_VERSION_PATCH "1")
 
 SET(AF_VERSION "${AF_VERSION_MAJOR}.${AF_VERSION_MINOR}.${AF_VERSION_PATCH}")
 SET(AF_API_VERSION_CURRENT ${AF_VERSION_MAJOR}${AF_VERSION_MINOR})

diff --git a/CMakeModules/build_forge.cmake b/CMakeModules/build_forge.cmake
@@ -22,7 +22,7 @@ ENDIF()
 ExternalProject_Add(
     forge-ext
     GIT_REPOSITORY https://github.com/arrayfire/forge.git
-    GIT_TAG 79fac0b7ed35c96f25c8006075ec934729cf9dc4
+    GIT_TAG af3.1
     PREFIX "${prefix}"
     INSTALL_DIR "${prefix}"
     UPDATE_COMMAND ""

diff --git a/README.md b/README.md
@@ -10,7 +10,7 @@ A few lines of code in ArrayFire can replace dozens of lines of parallel computi
 To build ArrayFire from source, please follow the instructions on our [wiki](https://github.com/arrayfire/arrayfire/wiki).
 
 ### Download ArrayFire Installers
-We currently have binary tar balls and installers available for the beta version of ArrayFire 3.0. These can be downloaded at the [ArrayFire Downloads](http://go.arrayfire.com/l/37882/2015-03-31/mmhqy) page.
+ArrayFire binary installers can be downloaded at the [ArrayFire Downloads](http://go.arrayfire.com/l/37882/2015-03-31/mmhqy) page.
 
 ### Support and Contact Info [![Join the chat at https://gitter.im/arrayfire/arrayfire](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/arrayfire/arrayfire?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
@@ -118,7 +118,7 @@ following reference:
 Formatted:
 ```
 Yalamanchili, P., Arshad, U., Mohammed, Z., Garigipati, P., Entschev, P.,
-Kloppenborg, B., Malcolm, James and Melonakos, J. (2015).
+Kloppenborg, B., Malcolm, J. and Melonakos, J. (2015).
 ArrayFire - A high performance software library for parallel computing with an
 easy-to-use API. Atlanta: AccelerEyes. Retrieved from https://github.com/arrayfire/arrayfire
 ```

diff --git a/docs/pages/release_notes.md b/docs/pages/release_notes.md
@@ -1,6 +1,32 @@
 Release Notes {#releasenotes}
 ==============
 
+v3.1.1
+==============
+
+Installers
+-----------
+
+* CUDA backend now depends on CUDA 7.5 toolkit
+* OpenCL backend now require OpenCL 1.2 or greater
+
+Bug Fixes
+--------------
+
+* Fixed [bug](https://github.com/arrayfire/arrayfire/issues/981) in reductions after indexing
+* Fixed [bug](https://github.com/arrayfire/arrayfire/issues/976) in indexing when using reverse indices
+
+Build
+------
+
+* `cmake` now includes `PKG_CONFIG` in the search path for CBLAS and LAPACKE libraries
+* [heston_model.cpp](\ref heston_model.cpp) example now builds with the default ArrayFire cmake files after installation
+
+Other
+------
+
+* Fixed bug in [image_editing.cpp](\ref image_editing.cpp)
+
 v3.1.0
 ==============
 
@@ -105,7 +131,7 @@ Bug Fixes
     * Fix compatibility of c32/c64 arrays when operating with scalars
     * Fix median for all values of an array
     * Fix double free issue when indexing (30cbbc7)
-    * Fix bug in rank
+    * Fix [bug](https://github.com/arrayfire/arrayfire/issues/901) in rank
     * Fix default values for scale throwing exception
     * Fix conjg raising exception on real input
     * Fix bug when using conjugate transpose for vector input
@@ -115,20 +141,18 @@ Bug Fixes
     * Fix setSeed for randu
     * Fix casting to and from complex
     * Check NULL values when allocating memory
-    * Fix offset issue for CPU element-wise operations
+    * Fix [offset issue](https://github.com/arrayfire/arrayfire/issues/923) for CPU element-wise operations
 
 New Examples
 ------------
 * Match Template
 * Susan
 * Heston Model (contributed by Michael Nowotny)
 
-Distribution Changes
---------------------
-* Fixed automatic detection of ArrayFire when using with CMake in the Windows
-  Installer
-* Compiling ArrayFire with FreeImage as a static library for Linux x86
-  installers
+Installer
+----------
+* Fixed bug in automatic detection of ArrayFire when using with CMake in Windows
+* The Linux libraries are now compiled with static version of FreeImage
 
 Known Issues
 ------------

diff --git a/docs/pages/using_on_windows.md b/docs/pages/using_on_windows.md
@@ -24,7 +24,7 @@ to the location of the executables.
 ## Step 1: Adding ArrayFire to PATH for all users
 
 The ArrayFire installer for Windows creates a user `PATH` variable containing
-`%AF_PATH%/lib`. This is required so that Windows knows where to find the
+`%%AF_PATH%/lib`. This is required so that Windows knows where to find the
 ArrayFire DLLs. This variable fixes the DLL finding only for the user that
 installs ArrayFire.
 
@@ -42,9 +42,9 @@ To allow DLL detection for all users, it needs to be added to the system
 3. Click on _Environment Variables_, then under **System Variables**, find
    `PATH`, and click on it.
 
-4. In edit mode, append `%AF_PATH%/lib`. NOTE: Ensure that there is a semi-colon
-   separating `%AF_PATH%/lib` from any existing content (e.g.
-   `EXISTING_PATHS;%AF_PATH%/lib;`) otherwise other software may not function
+4. In edit mode, append `%%AF_PATH%/lib`. NOTE: Ensure that there is a semi-colon
+   separating `%%AF_PATH%/lib` from any existing content (e.g.
+   `EXISTING_PATHS;%%AF_PATH%/lib;`) otherwise other software may not function
    correctly.
 
 ## Step 2: Verify the path addition functions correctly

diff --git a/examples/financial/heston_model.cpp b/examples/financial/heston_model.cpp
@@ -29,22 +29,21 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ***********************************************************************************************/
 
+#include <stdio.h>
 #include <iostream>
 #include <arrayfire.h>
-#include <vector>
-#include <tuple>
 
 using namespace std;
 using namespace af;
 
-tuple<af::array, af::array>
-simulateHestonModel(float T, unsigned int N, unsigned int R, float mu, float kappa,
-                    float vBar, float sigmaV, float rho, float x0, float v0)
+void simulateHestonModel(af::array &xres, af::array &vres,
+                         float T, unsigned int N, unsigned int R, float mu, float kappa,
+                         float vBar, float sigmaV, float rho, float x0, float v0)
 {
     float deltaT = T / (float)(N - 1);
 
-    std::vector<af::array> x = {af::constant(x0, R), af::constant(0, R)};
-    std::vector<af::array> v = {af::constant(v0, R), af::constant(0, R)};
+    af::array x[] = {af::constant(x0, R), af::constant(0, R)};
+    af::array v[] = {af::constant(v0, R), af::constant(0, R)};
 
     float sqrtDeltaT = sqrt(deltaT);
 
@@ -68,7 +67,8 @@ simulateHestonModel(float T, unsigned int N, unsigned int R, float mu, float kap
         v[tCurrent] = max(vTmp, zeroConstant);
     }
 
-    return std::make_tuple(x[tCurrent], v[tCurrent]);
+    xres = x[tCurrent];
+    vres = v[tCurrent];
 }
 
 int main()
@@ -94,11 +94,11 @@ int main()
         af::array v;
 
         // first run
-        std::tie(x, v) = simulateHestonModel(T, nT, R_first_run, r, kappa, vBar, sigmaV, rho, x0, v0);
+        simulateHestonModel(x, v, T, nT, R_first_run, r, kappa, vBar, sigmaV, rho, x0, v0);
         af::sync(); // Ensure the first run is finished
 
         timer::start();
-        std::tie(x, v) = simulateHestonModel(T, nT, R, r, kappa, vBar, sigmaV, rho, x0, v0);
+        simulateHestonModel(x, v, T, nT, R, r, kappa, vBar, sigmaV, rho, x0, v0);
         af::sync();
         cout << "Time in simulation: " << timer::stop() << endl;
 

diff --git a/examples/image_processing/image_editing.cpp b/examples/image_processing/image_editing.cpp
@@ -101,7 +101,7 @@ int main(int argc, char **argv)
 
         array man = loadImage(ASSETS_DIR "/examples/images/man.jpg", true);
         array fight = loadImage(ASSETS_DIR "/examples/images/fight.jpg", true);
-        array nature = loadImage(ASSETS_DIR "/examples/images/nature.jpg", true);
+        array nature = resize(loadImage(ASSETS_DIR "/examples/images/nature.jpg", true), fight.dims(0), fight.dims(1));
 
         array intensity = colorSpace(fight, AF_GRAY, AF_RGB);
         array mask = clamp(intensity, 10.0f, 255.0f)>0.0f;