1/*
2 *
3 * cblas_dsbmv.c
4 * This program is a C interface to dsbmv.
5 * Written by Keita Teranishi
6 * 4/6/1998
7 *
8 */
9
10#include "cblas.h"
11#include "cblas_f77.h"
12void cblas_dsbmv(const enum CBLAS_ORDER order,
13                 const enum CBLAS_UPLO Uplo, const int N, const int K,
14                 const double alpha, const double  *A, const int lda,
15                 const double  *X, const int incX, const double beta,
16                 double  *Y, const int incY)
17{
18   char UL;
19#ifdef F77_CHAR
20   F77_CHAR F77_UL;
21#else
22   #define F77_UL &UL
23#endif
24#ifdef F77_INT
25   F77_INT F77_N=N, F77_K=K, F77_lda=lda, F77_incX=incX, F77_incY=incY;
26#else
27   #define F77_N N
28   #define F77_K K
29   #define F77_lda lda
30   #define F77_incX incX
31   #define F77_incY incY
32#endif
33   extern int CBLAS_CallFromC;
34   extern int RowMajorStrg;
35   RowMajorStrg = 0;
36
37   CBLAS_CallFromC = 1;
38   if (order == CblasColMajor)
39   {
40      if (Uplo == CblasUpper) UL = 'U';
41      else if (Uplo == CblasLower) UL = 'L';
42      else
43      {
44         cblas_xerbla(2, "cblas_dsbmv","Illegal Uplo setting, %d\n",Uplo );
45         CBLAS_CallFromC = 0;
46         RowMajorStrg = 0;
47         return;
48      }
49      #ifdef F77_CHAR
50         F77_UL = C2F_CHAR(&UL);
51      #endif
52      F77_dsbmv(F77_UL, &F77_N, &F77_K, &alpha, A, &F77_lda, X,
53                     &F77_incX, &beta, Y, &F77_incY);
54   }
55   else if (order == CblasRowMajor)
56   {
57      RowMajorStrg = 1;
58      if (Uplo == CblasUpper) UL = 'L';
59      else if (Uplo == CblasLower) UL = 'U';
60      else
61      {
62         cblas_xerbla(2, "cblas_dsbmv","Illegal Uplo setting, %d\n", Uplo);
63         CBLAS_CallFromC = 0;
64         RowMajorStrg = 0;
65         return;
66      }
67      #ifdef F77_CHAR
68         F77_UL = C2F_CHAR(&UL);
69      #endif
70      F77_dsbmv(F77_UL, &F77_N, &F77_K, &alpha,
71                     A ,&F77_lda, X,&F77_incX, &beta, Y, &F77_incY);
72   }
73   else cblas_xerbla(1, "cblas_dsbmv", "Illegal Order setting, %d\n", order);
74   CBLAS_CallFromC = 0;
75   RowMajorStrg = 0;
76   return;
77}
78