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1 /*
2  * cblas_stbmv.c
3  * This program is a C interface to stbmv.
4  * Written by Keita Teranishi
5  * 3/3/1998
6  */
7 #include "cblas.h"
8 #include "cblas_f77.h"
9 
cblas_stbmv(const enum CBLAS_ORDER order,const enum CBLAS_UPLO Uplo,const enum CBLAS_TRANSPOSE TransA,const enum CBLAS_DIAG Diag,const int N,const int K,const float * A,const int lda,float * X,const int incX)10 void cblas_stbmv(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
11                  const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_DIAG Diag,
12                  const int N, const int K, const float  *A, const int lda,
13                  float  *X, const int incX)
14 {
15    char TA;
16    char UL;
17    char DI;
18 #ifdef F77_CHAR
19    F77_CHAR F77_TA, F77_UL, F77_DI;
20 #else
21    #define F77_TA &TA
22    #define F77_UL &UL
23    #define F77_DI &DI
24 #endif
25 #ifdef F77_INT
26    F77_INT F77_N=N, F77_lda=lda, F77_K=K, F77_incX=incX;
27 #else
28    #define F77_N N
29    #define F77_K K
30    #define F77_lda lda
31    #define F77_incX incX
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_stbmv","Illegal Uplo setting, %d\n", Uplo);
45          CBLAS_CallFromC = 0;
46          RowMajorStrg = 0;
47          return;
48       }
49       if (TransA == CblasNoTrans) TA = 'N';
50       else if (TransA == CblasTrans) TA = 'T';
51       else if (TransA == CblasConjTrans) TA = 'C';
52       else
53       {
54          cblas_xerbla(3, "cblas_stbmv","Illegal TransA setting, %d\n", TransA);
55          CBLAS_CallFromC = 0;
56          RowMajorStrg = 0;
57          return;
58       }
59       if (Diag == CblasUnit) DI = 'U';
60       else if (Diag == CblasNonUnit) DI = 'N';
61       else
62       {
63          cblas_xerbla(4, "cblas_stbmv","Illegal Diag setting, %d\n", Diag);
64          CBLAS_CallFromC = 0;
65          RowMajorStrg = 0;
66          return;
67       }
68       #ifdef F77_CHAR
69          F77_UL = C2F_CHAR(&UL);
70          F77_TA = C2F_CHAR(&TA);
71          F77_DI = C2F_CHAR(&DI);
72       #endif
73       F77_stbmv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X,
74                       &F77_incX);
75    }
76    else if (order == CblasRowMajor)
77    {
78       RowMajorStrg = 1;
79       if (Uplo == CblasUpper) UL = 'L';
80       else if (Uplo == CblasLower) UL = 'U';
81       else
82       {
83          cblas_xerbla(2, "cblas_stbmv","Illegal Uplo setting, %d\n", Uplo);
84          CBLAS_CallFromC = 0;
85          RowMajorStrg = 0;
86          return;
87       }
88 
89       if (TransA == CblasNoTrans) TA = 'T';
90       else if (TransA == CblasTrans) TA = 'N';
91       else if (TransA == CblasConjTrans) TA = 'N';
92       else
93       {
94          cblas_xerbla(3, "cblas_stbmv","Illegal TransA setting, %d\n", TransA);
95          CBLAS_CallFromC = 0;
96          RowMajorStrg = 0;
97          return;
98       }
99 
100       if (Diag == CblasUnit) DI = 'U';
101       else if (Diag == CblasNonUnit) DI = 'N';
102       else
103       {
104          cblas_xerbla(4, "cblas_stbmv","Illegal Uplo setting, %d\n", Uplo);
105          CBLAS_CallFromC = 0;
106          RowMajorStrg = 0;
107          return;
108       }
109       #ifdef F77_CHAR
110          F77_UL = C2F_CHAR(&UL);
111          F77_TA = C2F_CHAR(&TA);
112          F77_DI = C2F_CHAR(&DI);
113       #endif
114 
115       F77_stbmv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X,
116                       &F77_incX);
117    }
118    else cblas_xerbla(1, "cblas_stbmv", "Illegal Order setting, %d\n", order);
119    CBLAS_CallFromC = 0;
120    RowMajorStrg = 0;
121    return;
122 }
123