atl_cger1_axpy.c

来自「基于Blas CLapck的.用过的人知道是干啥的」· C语言 代码 · 共 66 行

/*
 *             Automatically Tuned Linear Algebra Software v3.8.0
 *                    (C) Copyright 1999 R. Clint Whaley
 *
 * 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. The name of the ATLAS group or the names of its contributers may
 *      not be used to endorse or promote products derived from this
 *      software without specific 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 ATLAS GROUP OR ITS 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.
 *
 */

#include "atlas_misc.h"
#include "atlas_lvl2.h"

static void ger1(const int M, const int N, const SCALAR alpha, const TYPE *X,
                 const TYPE *Y, const int incY, TYPE *A, const int lda)
{
   const int incy = incY<<1, lda2 = lda<<1;
   const TYPE *stY = Y + N*incy;
   #ifdef Conj_
      TYPE y[2];
   #else
      #define y Y
   #endif
   do
   {
      #ifdef Conj_
         *y = *Y;
         y[1] = -Y[1];
      #endif
      Mjoin(PATL,axpy)(M, y, X, 1, A, 1);
      Y += incy;
      A += lda2;
   }
   while (Y != stY);
}
#ifdef Conj_
void Mjoin(PATL,ger1c_a1_x1_yX)
#else
void Mjoin(PATL,ger1u_a1_x1_yX)
#endif
   (const int M, const int N, const SCALAR alpha, const TYPE *X, const int incX,
    const TYPE *Y, const int incY, TYPE *A, const int lda)
{
   ger1(M, N, alpha, X, Y, incY, A, lda);
}