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/*
* Copyright (c) 2010,2015 Michael Lehn
*
* 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_LEVEL3_RK_TCC
#define FLENS_BLAS_LEVEL3_RK_TCC
#include <flens/blas/closures/closures.h>
#include <flens/blas/level3/level3.h>
#include <flens/typedefs.h>
#include <ulmblas/cxxblas.h>
namespace flens { namespace blas {
//-- herk
template <typename ALPHA, typename MA, typename BETA, typename MC>
typename RestrictTo<IsGeMatrix<MA>::value
&& IsHeMatrix<MC>::value,
void>::Type
rk(Transpose transposeA,
const ALPHA &alpha,
const MA &A,
const BETA &beta,
MC &&C)
{
typedef typename RemoveRef<MC>::Type MatrixC;
typedef typename MatrixC::IndexType IndexType;
const bool transA = (transposeA==Trans || transposeA==ConjTrans);
const bool lowerC = (C.upLo()==Lower);
const IndexType n = (!transA) ? A.numRows() : A.numCols();
const IndexType k = (!transA) ? A.numCols() : A.numRows();
ASSERT(transposeA!=Conj && transposeA!=Trans);
ASSERT((beta==BETA(0)) || (C.dim()==n));
if (C.dim()!=n) {
C.resize(n, n);
}
ASSERT(C.dim()==((!transA) ? A.numRows() : A.numCols()));
cxxblas::herk(n, k, alpha,
transA, A.data(), A.strideRow(), A.strideCol(),
beta,
lowerC, C.data(), C.strideRow(), C.strideCol());
}
//-- syrk
template <typename ALPHA, typename MA, typename BETA, typename MC>
typename RestrictTo<IsGeMatrix<MA>::value
&& IsSyMatrix<MC>::value,
void>::Type
rk(Transpose transposeA,
const ALPHA &alpha,
const MA &A,
const BETA &beta,
MC &&C)
{
typedef typename RemoveRef<MC>::Type MatrixC;
typedef typename MatrixC::IndexType IndexType;
const bool transA = (transposeA==Trans || transposeA==ConjTrans);
const bool lowerC = (C.upLo()==Lower);
const IndexType n = (!transA) ? A.numRows() : A.numCols();
const IndexType k = (!transA) ? A.numCols() : A.numRows();
//ASSERT(transposeA!=Conj && transposeA!=ConjTrans);
ASSERT((beta==BETA(0)) || (C.dim()==n));
if (C.dim()!=n) {
C.resize(n, n);
}
ASSERT(C.dim()==((!transA) ? A.numRows() : A.numCols()));
cxxblas::syrk(n, k, alpha,
transA, A.data(), A.strideRow(), A.strideCol(),
beta,
lowerC, C.data(), C.strideRow(), C.strideCol());
}
} } // namespace blas, flens
#endif // FLENS_BLAS_LEVEL3_RK_TCC
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