01: /*
02:  *
03:  * cblas_dsbmv.c
04:  * This program is a C interface to dsbmv.
05:  * Written by Keita Teranishi
06:  * 4/6/1998
07:  *
08:  */
09: 
10: #include "cblas.h"
11: #include "cblas_f77.h"
12: void 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: