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/*
* Copyright (c) 2009, Michael Lehn
* Copyright (c) 2012, Michael Lehn, Klaus Pototzky
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1) Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2) Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3) Neither the name of the FLENS development group nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FLENS_BLAS_EXTENSIONS_HEMATRIX_COPY_TCC
#define FLENS_BLAS_EXTENSIONS_HEMATRIX_COPY_TCC 1
#include <flens/auxiliary/auxiliary.h>
#include <flens/blas/level1/level1.h>
#include <flens/matrixtypes/matrixtypes.h>
#include <flens/typedefs.h>
namespace flens { namespace blas {
//-- copy: HeMatrix -> HeMatrix
template <typename MA, typename MB>
typename RestrictTo<IsHeMatrix<MA>::value
&& IsHeMatrix<MB>::value,
void>::Type
copy(const MA &A, MB &&B)
{
//
// Resize left hand size if needed. This is *usually* only alloweded
// when the left hand side is an empty matrix (such that it is no actual
// resizing but rather an initialization).
//
if (B.dim()!=A.dim()) {
# ifndef FLENS_DEBUG_CLOSURES
ASSERT(B.dim()==0);
# else
if (B.dim()!=0) {
FLENS_BLASLOG_RESIZE_MATRIX(B, A.dim(), A.dim());
}
# endif
B.resize(A);
B.upLo() = A.upLo();
}
if (A.upLo()==B.upLo()) {
copy(NoTrans, A.triangular(), B.triangular());
} else {
copy(ConjTrans, A.triangular(), B.triangular());
}
}
//-- Densify Sparse Matrices ---------------------------------------------------
//-- copy: HeCCSMatrix -> HeMatrix
template <typename MA, typename MB>
typename RestrictTo<IsHeCCSMatrix<MA>::value
&& IsHeMatrix<MB>::value,
void>::Type
copy(const MA &A, MB &&B)
{
typedef typename MA::IndexType IndexType;
typedef typename MA::ElementType ElementType;
if (B.dim()!=A.dim()) {
ASSERT(B.dim()==0);
B.resize(A.dim(), A.upLo(), A.indexBase(), ElementType(0));
B.upLo() = A.upLo();
}
ASSERT(A.upLo()==B.upLo());
const auto &rows = A.engine().rows();
const auto &cols = A.engine().cols();
const auto &vals = A.engine().values();
for (IndexType j=cols.firstIndex(); j<cols.lastIndex(); ++j) {
for (IndexType k=cols(j); k<cols(j+1); ++k) {
B(rows(k), j) = vals(k);
}
}
}
//-- copy: HeCRSMatrix -> HeMatrix
template <typename MA, typename MB>
typename RestrictTo<IsHeCRSMatrix<MA>::value
&& IsHeMatrix<MB>::value,
void>::Type
copy(const MA &A, MB &&B)
{
typedef typename MA::IndexType IndexType;
typedef typename MA::ElementType ElementType;
if (B.dim()!=A.dim()) {
ASSERT(B.dim()==0);
B.resize(A.dim(), A.upLo(), A.indexBase(), ElementType(0));
B.upLo() = A.upLo();
}
ASSERT(A.upLo()==B.upLo());
const auto &rows = A.engine().rows();
const auto &cols = A.engine().cols();
const auto &vals = A.engine().values();
for (IndexType i=rows.firstIndex(); i<rows.lastIndex(); ++i) {
for (IndexType k=rows(i); k<rows(i+1); ++k) {
B(i,cols(k)) = vals(k);
}
}
}
} } // namespace blas, flens
#endif // FLENS_BLAS_EXTENSIONS_HEMATRIX_COPY_TCC
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