85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
/*
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* cblas_cgerc.c
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* The program is a C interface to cgerc.
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*
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* Keita Teranishi 5/20/98
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "cblas.h"
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#include "cblas_f77.h"
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void cblas_cgerc(const CBLAS_LAYOUT layout, const int M, const int N,
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const void *alpha, const void *X, const int incX,
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const void *Y, const int incY, void *A, const int lda)
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{
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#ifdef F77_INT
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F77_INT F77_M=M, F77_N=N, F77_lda=lda, F77_incX=incX, F77_incY=incY;
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#else
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#define F77_M M
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#define F77_N N
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#define F77_incX incX
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#define F77_incY incy
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#define F77_lda lda
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#endif
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int n, i, tincy, incy=incY;
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float *y=(float *)Y, *yy=(float *)Y, *ty, *st;
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extern int CBLAS_CallFromC;
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extern int RowMajorStrg;
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RowMajorStrg = 0;
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CBLAS_CallFromC = 1;
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if (layout == CblasColMajor)
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{
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F77_cgerc( &F77_M, &F77_N, alpha, X, &F77_incX, Y, &F77_incY, A,
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&F77_lda);
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} else if (layout == CblasRowMajor)
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{
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RowMajorStrg = 1;
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if (N > 0)
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{
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n = N << 1;
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y = malloc(n*sizeof(float));
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ty = y;
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if( incY > 0 ) {
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i = incY << 1;
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tincy = 2;
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st= y+n;
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} else {
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i = incY *(-2);
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tincy = -2;
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st = y-2;
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y +=(n-2);
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}
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do
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{
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*y = *yy;
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y[1] = -yy[1];
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y += tincy ;
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yy += i;
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}
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while (y != st);
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y = ty;
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#ifdef F77_INT
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F77_incY = 1;
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#else
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incy = 1;
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#endif
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}
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else y = (float *) Y;
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F77_cgeru( &F77_N, &F77_M, alpha, y, &F77_incY, X, &F77_incX, A,
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&F77_lda);
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if(Y!=y)
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free(y);
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} else cblas_xerbla(1, "cblas_cgerc", "Illegal layout setting, %d\n", layout);
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CBLAS_CallFromC = 0;
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RowMajorStrg = 0;
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return;
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}
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