79 lines
2.1 KiB
79 lines
2.1 KiB
/*
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*
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* cblas_dgemv.c
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* This program is a C interface to dgemv.
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* Written by Keita Teranishi
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* 4/6/1998
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*
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*/
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#include "cblas.h"
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#include "cblas_f77.h"
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void cblas_dgemv(const enum CBLAS_ORDER order,
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const enum CBLAS_TRANSPOSE TransA, const int M, const int N,
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const double alpha, const double *A, const int lda,
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const double *X, const int incX, const double beta,
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double *Y, const int incY)
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{
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char TA;
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#ifdef F77_CHAR
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F77_CHAR F77_TA;
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#else
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#define F77_TA &TA
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#endif
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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_lda lda
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#define F77_incX incX
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#define F77_incY incY
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#endif
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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 (order == CblasColMajor)
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{
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if (TransA == CblasNoTrans) TA = 'N';
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else if (TransA == CblasTrans) TA = 'T';
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else if (TransA == CblasConjTrans) TA = 'C';
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else
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{
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cblas_xerbla(2, "cblas_dgemv","Illegal TransA setting, %d\n", TransA);
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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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#ifdef F77_CHAR
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F77_TA = C2F_CHAR(&TA);
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#endif
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F77_dgemv(F77_TA, &F77_M, &F77_N, &alpha, A, &F77_lda, X, &F77_incX,
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&beta, Y, &F77_incY);
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}
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else if (order == CblasRowMajor)
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{
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RowMajorStrg = 1;
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if (TransA == CblasNoTrans) TA = 'T';
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else if (TransA == CblasTrans) TA = 'N';
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else if (TransA == CblasConjTrans) TA = 'N';
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else
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{
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cblas_xerbla(2, "cblas_dgemv","Illegal TransA setting, %d\n", TransA);
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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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#ifdef F77_CHAR
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F77_TA = C2F_CHAR(&TA);
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#endif
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F77_dgemv(F77_TA, &F77_N, &F77_M, &alpha, A, &F77_lda, X,
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&F77_incX, &beta, Y, &F77_incY);
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}
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else cblas_xerbla(1, "cblas_dgemv", "Illegal Order setting, %d\n", order);
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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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