gecopy.tcc (cxxblas/tinylevel1/gecopy.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 CXXBLAS_TINYLEVEL1_GECOPY_TCC
#define CXXBLAS_TINYLEVEL1_GECOPY_TCC 1

#include <cxxblas/cxxblas.h>

namespace cxxblas {

//
//  B = A  or B = A^T
//
template <int m, int n, typename MA, int ldA, typename MB, int ldB>
void
gecopy(Transpose trans, const MA *A, MB *B)
{
    if (trans==NoTrans) {
        if ((ldA==n) && (ldB==n)) {
            copy<m*n, MA, 1, MB, 1>(A, B);
            return;
        } else {
            for (int i=0, iA=0, iB=0; i<m; ++i, iA+=ldA, iB+=ldB) {
                copy<n, MA, 1, MB, 1>(A+iA, B+iB);
            }
            return;
        }
    }
    if (trans==Trans || trans==ConjTrans) {
        for (int i=0, iB=0; i<m; ++i, iB+=ldB) {
            copy<n, MA, ldA, MB, 1>(A+i, B+iB);
        }
    }
    if (trans==Conj || trans==Conj) {
        ASSERT(m==n);
        ASSERT(0);
        //gecotr<m, n, ldB>(B, ldB);
    }
}

} // namespace cxxblas

#endif // CXXBLAS_TINYLEVEL1_GECOPY_TCC