sylr2.tcc (ulmblas/impl/level2/sylr2.tcc)

      1
      2
      3
      4
      5
      6
      7
      8
      9
     10
     11
     12
     13
     14
     15
     16
     17
     18
     19
     20
     21
     22
     23
     24
     25
     26
     27
     28
     29
     30
     31
     32
     33
     34
     35
     36
     37
     38
     39
     40
     41
     42
     43
     44
     45
     46
     47
     48
     49
     50
     51
     52
     53
     54
     55
     56
     57
     58
     59
     60
     61
     62
     63
     64
     65
     66
     67
     68
     69
     70
     71
     72

/*

 * Copyright (C) 2014, The University of Texas at Austin

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *  - Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *  - 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.

 *  - Neither the name of The University of Texas at Austin 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

 * HOLDER 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.

 *

 */

/*

 * Copyright (C) 2014-2015, Michael Lehn

 *

 * ulmBLAS adopted general ideas from BLIS.  Using micro kernels from BLIS

 * only requires minor modifications,

 *

 */

#ifndef ULMBLAS_IMPL_LEVEL2_SYLR2_TCC

#define ULMBLAS_IMPL_LEVEL2_SYLR2_TCC 1

#include <ulmblas/impl/level2/sylr2.h>

namespace ulmBLAS {

template <typename IndexType, typename Alpha, typename TX, typename TY,

          typename TA>

void

sylr2(IndexType    n,

      const Alpha  &alpha,

      const TX     *x,

      IndexType    incX,

      const TY     *y,

      IndexType    incY,

      TA           *A,

      IndexType    incRowA,

      IndexType    incColA)

{

//

//  Simple reference implementation

//

    for (IndexType j=0; j<n; ++j) {

        for (IndexType i=j; i<n; ++i) {

            A[i*incRowA+j*incColA] += alpha*x[i*incX]*y[j*incY];

            A[i*incRowA+j*incColA] += alpha*y[i*incY]*x[j*incX];

        }

    }

}

} // namespace ulmBLAS

#endif // ULMBLAS_IMPL_LEVEL2_SYLR2_TCC