155 lines
3.6 KiB
C
155 lines
3.6 KiB
C
/***************************************************************************
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Copyright (c) 2020, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include "common.h"
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#if defined(__VEC__) || defined(__ALTIVEC__)
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#include "sdot_microk_power10.c"
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#endif
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#ifndef HAVE_KERNEL_16
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static FLOAT sdot_kernel_16(BLASLONG n, FLOAT *x, FLOAT *y)
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{
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BLASLONG register i = 0;
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FLOAT dot = 0.0;
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while(i < n)
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{
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dot += y[i] * x[i]
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+ y[i+1] * x[i+1]
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+ y[i+2] * x[i+2]
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+ y[i+3] * x[i+3]
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+ y[i+4] * x[i+4]
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+ y[i+5] * x[i+5]
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+ y[i+6] * x[i+6]
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+ y[i+7] * x[i+7] ;
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i+=8 ;
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}
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return dot;
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}
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#endif
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#if defined (DSDOT)
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double CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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#else
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FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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#endif
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{
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BLASLONG i=0;
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BLASLONG ix=0,iy=0;
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double dot = 0.0 ;
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#if defined (DSDOT)
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double mydot = 0.0;
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FLOAT asmdot = 0.0;
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#else
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FLOAT mydot=0.0;
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#endif
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BLASLONG n1;
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if ( n <= 0 ) return(dot);
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if ( (inc_x == 1) && (inc_y == 1) )
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{
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n1 = n & (BLASLONG)(-32);
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if ( n1 )
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#if defined(DSDOT)
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{
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FLOAT *x1=x;
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FLOAT *y1=y;
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BLASLONG n2 = 32;
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while (i<n1) {
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asmdot = sdot_kernel_16(n2, x1, y1);
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mydot += (double)asmdot;
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asmdot=0.;
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x1+=32;
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y1+=32;
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i+=32;
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}
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}
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#else
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mydot = sdot_kernel_16(n1, x, y);
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#endif
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i = n1;
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while(i < n)
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{
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#if defined(DSDOT)
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dot += (double)y[i] * (double)x[i] ;
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#else
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dot += y[i] * x[i] ;
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#endif
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i++ ;
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}
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dot+=mydot;
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return(dot);
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}
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n1 = n & (BLASLONG)(-2);
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while(i < n1)
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{
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#if defined (DSDOT)
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dot += (double)y[iy] * (double)x[ix] + (double)y[iy+inc_y] * (double)x[ix+inc_x];
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#else
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dot += y[iy] * x[ix] + y[iy+inc_y] * x[ix+inc_x];
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#endif
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ix += inc_x*2 ;
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iy += inc_y*2 ;
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i+=2 ;
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}
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while(i < n)
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{
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#if defined (DSDOT)
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dot += (double)y[iy] * (double)x[ix] ;
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#else
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dot += y[iy] * x[ix] ;
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#endif
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ix += inc_x ;
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iy += inc_y ;
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i++ ;
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}
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return(dot);
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}
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