165 lines
4.0 KiB
C
165 lines
4.0 KiB
C
/***************************************************************************
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Copyright (c) 2013-2016, 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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/**************************************************************************************
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* 2016/03/21 Werner Saar (wernsaar@googlemail.com)
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* BLASTEST : OK
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* CTEST : OK
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* TEST : OK
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* LAPACK-TEST : OK
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**************************************************************************************/
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#include "common.h"
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#if defined(POWER8)
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#include "zdot_microk_power8.c"
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#endif
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#ifndef HAVE_KERNEL_8
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static void zdot_kernel_8(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *d)
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{
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BLASLONG register i = 0;
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FLOAT dot[4] = { 0.0, 0.0, 0.0, 0.0 };
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BLASLONG j=0;
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while( i < n )
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{
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dot[0] += x[j] * y[j] ;
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dot[1] += x[j+1] * y[j+1] ;
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dot[2] += x[j] * y[j+1] ;
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dot[3] += x[j+1] * y[j] ;
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dot[0] += x[j+2] * y[j+2] ;
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dot[1] += x[j+3] * y[j+3] ;
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dot[2] += x[j+2] * y[j+3] ;
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dot[3] += x[j+3] * y[j+2] ;
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dot[0] += x[j+4] * y[j+4] ;
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dot[1] += x[j+5] * y[j+5] ;
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dot[2] += x[j+4] * y[j+5] ;
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dot[3] += x[j+5] * y[j+4] ;
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dot[0] += x[j+6] * y[j+6] ;
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dot[1] += x[j+7] * y[j+7] ;
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dot[2] += x[j+6] * y[j+7] ;
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dot[3] += x[j+7] * y[j+6] ;
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j+=8;
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i+=4;
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}
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d[0] = dot[0];
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d[1] = dot[1];
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d[2] = dot[2];
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d[3] = dot[3];
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}
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#endif
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FLOAT _Complex CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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{
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BLASLONG i;
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BLASLONG ix,iy;
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FLOAT _Complex result;
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FLOAT dot[4] = { 0.0, 0.0, 0.0 , 0.0 } ;
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if ( n <= 0 )
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{
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__real__ result = 0.0 ;
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__imag__ result = 0.0 ;
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return(result);
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}
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if ( (inc_x == 1) && (inc_y == 1) )
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{
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BLASLONG n1 = n & -8;
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if ( n1 )
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zdot_kernel_8(n1, x, y , dot );
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i = n1;
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BLASLONG j = i * 2;
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while( i < n )
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{
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dot[0] += x[j] * y[j] ;
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dot[1] += x[j+1] * y[j+1] ;
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dot[2] += x[j] * y[j+1] ;
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dot[3] += x[j+1] * y[j] ;
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j+=2;
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i++ ;
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}
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}
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else
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{
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i=0;
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ix=0;
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iy=0;
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inc_x <<= 1;
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inc_y <<= 1;
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while(i < n)
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{
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dot[0] += x[ix] * y[iy] ;
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dot[1] += x[ix+1] * y[iy+1] ;
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dot[2] += x[ix] * y[iy+1] ;
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dot[3] += x[ix+1] * y[iy] ;
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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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}
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#if !defined(CONJ)
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__real__ result = dot[0] - dot[1];
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__imag__ result = dot[2] + dot[3];
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#else
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__real__ result = dot[0] + dot[1];
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__imag__ result = dot[2] - dot[3];
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#endif
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return(result);
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}
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