244 lines
6.3 KiB
C
244 lines
6.3 KiB
C
/***************************************************************************
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Copyright (c) 2015, 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(__GNUC__) && __GNUC__ > 11)
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#pragma GCC optimize("no-tree-vectorize")
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#endif
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#if defined(BULLDOZER)
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#include "zdot_microk_bulldozer-2.c"
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#elif defined(STEAMROLLER) || defined(PILEDRIVER) || defined(EXCAVATOR)
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#include "zdot_microk_steamroller-2.c"
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#elif defined(HASWELL) || defined(ZEN) || defined (SKYLAKEX) || defined (COOPERLAKE) || defined (SAPPHIRERAPIDS)
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#include "zdot_microk_haswell-2.c"
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#elif defined(SANDYBRIDGE)
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#include "zdot_microk_sandy-2.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) __attribute__ ((noinline));
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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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#if defined(SMP)
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extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
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BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
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void *c, BLASLONG ldc, int (*function)(void), int nthreads);
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#endif
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static void zdot_compute (BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y,OPENBLAS_COMPLEX_FLOAT *result)
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{
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BLASLONG i;
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BLASLONG ix,iy;
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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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OPENBLAS_COMPLEX_FLOAT res=OPENBLAS_MAKE_COMPLEX_FLOAT(0.0,0.0);
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*result=res;
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return;
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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 *= 2;
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inc_y *= 2;
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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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OPENBLAS_COMPLEX_FLOAT res=OPENBLAS_MAKE_COMPLEX_FLOAT(dot[0]-dot[1],dot[2]+dot[3]);
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#else
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OPENBLAS_COMPLEX_FLOAT res=OPENBLAS_MAKE_COMPLEX_FLOAT(dot[0]+dot[1],dot[2]-dot[3]);
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#endif
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*result=res;
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return;
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}
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#if defined(SMP)
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static int zdot_thread_function(BLASLONG n, BLASLONG dummy0,
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BLASLONG dummy1, FLOAT dummy2r, FLOAT dummy2i, FLOAT *x, BLASLONG inc_x, FLOAT *y,
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BLASLONG inc_y, FLOAT *result, BLASLONG dummy3)
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{
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zdot_compute(n, x, inc_x, y, inc_y, (void *)result);
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return 0;
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}
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#endif
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OPENBLAS_COMPLEX_FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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{
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#if defined(SMP)
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int nthreads;
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FLOAT dummy_alpha;
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#if defined(C_PGI) || defined(C_SUN)
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FLOAT zdotr=0., zdoti=0.;
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#endif
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#endif
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OPENBLAS_COMPLEX_FLOAT zdot;
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#if defined(C_PGI) || defined(C_SUN)
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zdot=OPENBLAS_MAKE_COMPLEX_FLOAT(0.0,0.0);
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#else
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CREAL(zdot) = 0.0;
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CIMAG(zdot) = 0.0;
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#endif
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#if defined(SMP)
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if (inc_x == 0 || inc_y == 0 || n <= 10000)
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nthreads = 1;
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else
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nthreads = num_cpu_avail(1);
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if (nthreads == 1) {
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zdot_compute(n, x, inc_x, y, inc_y, &zdot);
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} else {
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int mode, i;
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char result[MAX_CPU_NUMBER * sizeof(double) * 2];
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OPENBLAS_COMPLEX_FLOAT *ptr;
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#if !defined(DOUBLE)
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mode = BLAS_SINGLE | BLAS_COMPLEX;
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#else
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mode = BLAS_DOUBLE | BLAS_COMPLEX;
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#endif
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blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
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x, inc_x, y, inc_y, result, 0,
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(int (*)(void))zdot_thread_function, nthreads);
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ptr = (OPENBLAS_COMPLEX_FLOAT *)result;
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for (i = 0; i < nthreads; i++) {
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#if defined(C_PGI) || defined(C_SUN)
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zdotr += CREAL(*ptr);
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zdoti += CIMAG(*ptr);
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#else
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CREAL(zdot) = CREAL(zdot) + CREAL(*ptr);
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CIMAG(zdot) = CIMAG(zdot) + CIMAG(*ptr);
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#endif
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ptr = (void *)(((char *)ptr) + sizeof(double) * 2);
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}
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#if defined(C_PGI) || defined(C_SUN)
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zdot = OPENBLAS_MAKE_COMPLEX_FLOAT(zdotr,zdoti);
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#endif
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}
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#else
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zdot_compute(n, x, inc_x, y, inc_y, &zdot);
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#endif
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return zdot;
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}
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