1/*
2 * cblas_dtbmv.c
3 * The program is a C interface to dtbmv.
4 *
5 * Keita Teranishi  5/20/98
6 *
7 */
8#include "cblas.h"
9#include "cblas_f77.h"
10void cblas_dtbmv(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 double  *A, const int lda,
13                 double  *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_dtbmv","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_dtbmv","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_dtbmv","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_dtbmv( 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_dtbmv","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_dtbmv","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_dtbmv","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_dtbmv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X,
116                      &F77_incX);
117
118   }
119   else cblas_xerbla(1, "cblas_dtbmv", "Illegal Order setting, %d\n", order);
120   CBLAS_CallFromC = 0;
121   RowMajorStrg = 0;
122}
123