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"
11void cblas_dgemv(const enum CBLAS_ORDER order,
12                 const enum CBLAS_TRANSPOSE TransA, const int M, const int N,
13                 const double alpha, const double  *A, const int lda,
14                 const double  *X, const int incX, const double beta,
15                 double  *Y, const 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 (order == 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 (order == 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 Order setting, %d\n", order);
75   CBLAS_CallFromC = 0;
76   RowMajorStrg = 0;
77   return;
78}
79