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"
cblas_dsbmv(const CBLAS_LAYOUT layout,const CBLAS_UPLO Uplo,const int N,const int K,const double alpha,const double * A,const int lda,const double * X,const int incX,const double beta,double * Y,const int incY)12 void cblas_dsbmv(const CBLAS_LAYOUT layout,
13 const 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 (layout == 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 (layout == 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 layout setting, %d\n", layout);
74 CBLAS_CallFromC = 0;
75 RowMajorStrg = 0;
76 return;
77 }
78