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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