atl_sdsf77dot.c

来自「基于Blas CLapck的.用过的人知道是干啥的」· C语言 代码 · 共 60 行

/*
 *             Automatically Tuned Linear Algebra Software v3.8.0
 *                   (C) Copyright 1999 Antoine P. Petitet
 *
 * 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_tst.h"
#include "atlas_f77blas.h"

float ATL_sdsf77dot
(
   const int                  N,
   const float                B,
   const float                * X,
   const int                  INCX,
   const float                * Y,
   const int                  INCY
)
{
   float                      b = B, dot;
#ifdef ATL_FunkyInts
   const F77_INTEGER          F77N = N, F77incx = INCX, F77incy = INCY;
#else
   #define F77N               N
   #define F77incx            INCX
   #define F77incy            INCY
#endif

   if( INCX < 0 ) X -= ( 1 - N ) * INCX;
   if( INCY < 0 ) Y -= ( 1 - N ) * INCY;

   F77sdsdot( &F77N, &b, X, &F77incx, Y, &F77incy, &dot );

   return( dot );
}