rscal.tcc (flens/blas/level1/rscal.tcc)

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/*

 *   Copyright (c) 2012, 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_LEVEL1_RSCAL_TCC

#define FLENS_BLAS_LEVEL1_RSCAL_TCC 1

#include <flens/auxiliary/auxiliary.h>

#include <flens/blas/closures/closures.h>

#include <flens/blas/level1/level1.h>

#include <flens/typedefs.h>

#include <ulmblas/cxxblas.h>

#ifdef FLENS_DEBUG_CLOSURES

#   include <flens/blas/blaslogon.h>

#else

#   include <flens/blas/blaslogoff.h>

#endif

namespace flens { namespace blas {

//-- BLAS Level 1 extensions ---------------------------------------------------

//-- rscal

template <typename ALPHA, typename VY>

typename RestrictTo<IsDenseVector<VY>::value,

         void>::Type

rscal(const ALPHA &alpha, VY &&y)

{

    FLENS_BLASLOG_SETTAG("--> ");

    FLENS_BLASLOG_BEGIN_RSCAL(alpha, y);

    cxxblas::rscal(y.length(), alpha, y.data(), y.stride());

    FLENS_BLASLOG_END;

    FLENS_BLASLOG_UNSETTAG;

}

//-- gerscal

template <typename ALPHA, typename MB>

typename RestrictTo<IsGeMatrix<MB>::value,

         void>::Type

rscal(const ALPHA &alpha, MB &&B)

{

    FLENS_BLASLOG_SETTAG("--> ");

    FLENS_BLASLOG_BEGIN_RSCAL(alpha, B);

    cxxblas::gerscal(B.numRows(), B.numCols(),

                     alpha,

                     B.data(), B.strideRow(), B.strideCol());

    FLENS_BLASLOG_END;

    FLENS_BLASLOG_UNSETTAG;

}

} } // namespace blas, flens

#endif // FLENS_BLAS_LEVEL1_RSCAL_TCC