LAPACK  3.10.1
LAPACK: Linear Algebra PACKage
cblas_dgemv.c
Go to the documentation of this file.
1 /*
2  *
3  * cblas_dgemv.c
4  * This program is a C interface to dgemv.
5  * Written by Keita Teranishi
6  * 4/6/1998
7  *
8  */
9 #include "cblas.h"
10 #include "cblas_f77.h"
11 void cblas_dgemv(const CBLAS_LAYOUT layout,
12  const CBLAS_TRANSPOSE TransA, const CBLAS_INT M, const CBLAS_INT N,
13  const double alpha, const double *A, const CBLAS_INT lda,
14  const double *X, const CBLAS_INT incX, const double beta,
15  double *Y, const CBLAS_INT incY)
16 {
17  char TA;
18 #ifdef F77_CHAR
19  F77_CHAR F77_TA;
20 #else
21  #define F77_TA &TA
22 #endif
23 #ifdef F77_INT
24  F77_INT F77_M=M, F77_N=N, F77_lda=lda, F77_incX=incX, F77_incY=incY;
25 #else
26  #define F77_M M
27  #define F77_N N
28  #define F77_lda lda
29  #define F77_incX incX
30  #define F77_incY incY
31 #endif
32  extern int CBLAS_CallFromC;
33  extern int RowMajorStrg;
34  RowMajorStrg = 0;
35 
36  CBLAS_CallFromC = 1;
37  if (layout == CblasColMajor)
38  {
39  if (TransA == CblasNoTrans) TA = 'N';
40  else if (TransA == CblasTrans) TA = 'T';
41  else if (TransA == CblasConjTrans) TA = 'C';
42  else
43  {
44  cblas_xerbla(2, "cblas_dgemv","Illegal TransA setting, %d\n", TransA);
45  CBLAS_CallFromC = 0;
46  RowMajorStrg = 0;
47  return;
48  }
49  #ifdef F77_CHAR
50  F77_TA = C2F_CHAR(&TA);
51  #endif
52  F77_dgemv(F77_TA, &F77_M, &F77_N, &alpha, A, &F77_lda, X, &F77_incX,
53  &beta, Y, &F77_incY);
54  }
55  else if (layout == CblasRowMajor)
56  {
57  RowMajorStrg = 1;
58  if (TransA == CblasNoTrans) TA = 'T';
59  else if (TransA == CblasTrans) TA = 'N';
60  else if (TransA == CblasConjTrans) TA = 'N';
61  else
62  {
63  cblas_xerbla(2, "cblas_dgemv","Illegal TransA setting, %d\n", TransA);
64  CBLAS_CallFromC = 0;
65  RowMajorStrg = 0;
66  return;
67  }
68  #ifdef F77_CHAR
69  F77_TA = C2F_CHAR(&TA);
70  #endif
71  F77_dgemv(F77_TA, &F77_N, &F77_M, &alpha, A, &F77_lda, X,
72  &F77_incX, &beta, Y, &F77_incY);
73  }
74  else cblas_xerbla(1, "cblas_dgemv", "Illegal layout setting, %d\n", layout);
75  CBLAS_CallFromC = 0;
76  RowMajorStrg = 0;
77  return;
78 }
void F77_dgemv(int *layout, char *transp, int *m, int *n, double *alpha, double *a, int *lda, double *x, int *incx, double *beta, double *y, int *incy)
Definition: c_dblas2.c:11
void cblas_xerbla(CBLAS_INT p, const char *rout, const char *form,...)
Definition: cblas_xerbla.c:12
CBLAS_TRANSPOSE
Definition: cblas.h:28
@ CblasNoTrans
Definition: cblas.h:28
@ CblasTrans
Definition: cblas.h:28
@ CblasConjTrans
Definition: cblas.h:28
CBLAS_LAYOUT
Definition: cblas.h:27
@ CblasColMajor
Definition: cblas.h:27
@ CblasRowMajor
Definition: cblas.h:27
#define CBLAS_INT
Definition: cblas.h:23
#define F77_incX
#define F77_incY
#define F77_TA
void cblas_dgemv(const CBLAS_LAYOUT layout, const CBLAS_TRANSPOSE TransA, const CBLAS_INT M, const CBLAS_INT N, const double alpha, const double *A, const CBLAS_INT lda, const double *X, const CBLAS_INT incX, const double beta, double *Y, const CBLAS_INT incY)
Definition: cblas_dgemv.c:11
#define F77_N
#define F77_lda
#define F77_M
#define F77_INT
Definition: cblas_f77.h:32
int CBLAS_CallFromC
Definition: cblas_globals.c:1
int RowMajorStrg
Definition: cblas_globals.c:2
#define N
Definition: example_user.c:10