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qr.cpp
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96 lines (77 loc) · 2.58 KB
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/*******************************************************
* Copyright (c) 2014, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <af/array.h>
#include <af/lapack.h>
#include <af/defines.h>
#include <err_common.hpp>
#include <handle.hpp>
#include <backend.hpp>
#include <ArrayInfo.hpp>
#include <qr.hpp>
using af::dim4;
using namespace detail;
template<typename T>
static inline void qr(af_array *q, af_array *r, af_array *tau, const af_array in)
{
Array<T> qArray = createEmptyArray<T>(af::dim4());
Array<T> rArray = createEmptyArray<T>(af::dim4());
Array<T> tArray = createEmptyArray<T>(af::dim4());
qr<T>(qArray, rArray, tArray, getArray<T>(in));
*q = getHandle(qArray);
*r = getHandle(rArray);
*tau = getHandle(tArray);
}
template<typename T>
static inline af_array qr_inplace(af_array in)
{
return getHandle(qr_inplace<T>(getWritableArray<T>(in)));
}
af_err af_qr(af_array *q, af_array *r, af_array *tau, const af_array in)
{
try {
ArrayInfo i_info = getInfo(in);
if (i_info.ndims() > 2) {
AF_ERROR("qr can not be used in batch mode", AF_ERR_BATCH);
}
af_dtype type = i_info.getType();
ARG_ASSERT(3, i_info.isFloating()); // Only floating and complex types
switch(type) {
case f32: qr<float >(q, r, tau, in); break;
case f64: qr<double >(q, r, tau, in); break;
case c32: qr<cfloat >(q, r, tau, in); break;
case c64: qr<cdouble>(q, r, tau, in); break;
default: TYPE_ERROR(1, type);
}
}
CATCHALL;
return AF_SUCCESS;
}
af_err af_qr_inplace(af_array *tau, af_array in)
{
try {
ArrayInfo i_info = getInfo(in);
if (i_info.ndims() > 2) {
AF_ERROR("qr can not be used in batch mode", AF_ERR_BATCH);
}
af_dtype type = i_info.getType();
ARG_ASSERT(1, i_info.isFloating()); // Only floating and complex types
af_array out;
switch(type) {
case f32: out = qr_inplace<float >(in); break;
case f64: out = qr_inplace<double >(in); break;
case c32: out = qr_inplace<cfloat >(in); break;
case c64: out = qr_inplace<cdouble>(in); break;
default: TYPE_ERROR(1, type);
}
if(tau != NULL)
std::swap(*tau, out);
}
CATCHALL;
return AF_SUCCESS;
}