1 /*
2 *
3 * cblas_dtrmv.c
4 * This program is a C interface to sgemv.
5 * Written by Keita Teranishi
6 * 4/6/1998
7 *
8 */
9
10 #include "cblas.h"
11 #include "cblas_f77.h"
cblas_dtrmv(const enum CBLAS_ORDER order,const enum CBLAS_UPLO Uplo,const enum CBLAS_TRANSPOSE TransA,const enum CBLAS_DIAG Diag,const int N,const double * A,const int lda,double * X,const int incX)12 void cblas_dtrmv(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
13 const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_DIAG Diag,
14 const int N, const double *A, const int lda,
15 double *X, const int incX)
16
17 {
18 char TA;
19 char UL;
20 char DI;
21 #ifdef F77_CHAR
22 F77_CHAR F77_TA, F77_UL, F77_DI;
23 #else
24 #define F77_TA &TA
25 #define F77_UL &UL
26 #define F77_DI &DI
27 #endif
28 #ifdef F77_INT
29 F77_INT F77_N=N, F77_lda=lda, F77_incX=incX;
30 #else
31 #define F77_N N
32 #define F77_lda lda
33 #define F77_incX incX
34 #endif
35 extern int CBLAS_CallFromC;
36 extern int RowMajorStrg;
37 RowMajorStrg = 0;
38
39 CBLAS_CallFromC = 1;
40 if (order == CblasColMajor)
41 {
42 if (Uplo == CblasUpper) UL = 'U';
43 else if (Uplo == CblasLower) UL = 'L';
44 else
45 {
46 cblas_xerbla(2, "cblas_dtrmv","Illegal Uplo setting, %d\n", Uplo);
47 CBLAS_CallFromC = 0;
48 RowMajorStrg = 0;
49 return;
50 }
51 if (TransA == CblasNoTrans) TA = 'N';
52 else if (TransA == CblasTrans) TA = 'T';
53 else if (TransA == CblasConjTrans) TA = 'C';
54 else
55 {
56 cblas_xerbla(3, "cblas_dtrmv","Illegal TransA setting, %d\n", TransA);
57 CBLAS_CallFromC = 0;
58 RowMajorStrg = 0;
59 return;
60 }
61 if (Diag == CblasUnit) DI = 'U';
62 else if (Diag == CblasNonUnit) DI = 'N';
63 else
64 {
65 cblas_xerbla(4, "cblas_dtrmv","Illegal Diag setting, %d\n", Diag);
66 CBLAS_CallFromC = 0;
67 RowMajorStrg = 0;
68 return;
69 }
70 #ifdef F77_CHAR
71 F77_UL = C2F_CHAR(&UL);
72 F77_TA = C2F_CHAR(&TA);
73 F77_DI = C2F_CHAR(&DI);
74 #endif
75 F77_dtrmv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
76 &F77_incX);
77 }
78 else if (order == CblasRowMajor)
79 {
80 RowMajorStrg = 1;
81 if (Uplo == CblasUpper) UL = 'L';
82 else if (Uplo == CblasLower) UL = 'U';
83 else
84 {
85 cblas_xerbla(2, "cblas_dtrmv","Illegal Uplo setting, %d\n", Uplo);
86 CBLAS_CallFromC = 0;
87 RowMajorStrg = 0;
88 return;
89 }
90
91 if (TransA == CblasNoTrans) TA = 'T';
92 else if (TransA == CblasTrans) TA = 'N';
93 else if (TransA == CblasConjTrans) TA = 'N';
94 else
95 {
96 cblas_xerbla(3, "cblas_dtrmv","Illegal TransA setting, %d\n", TransA);
97 CBLAS_CallFromC = 0;
98 RowMajorStrg = 0;
99 return;
100 }
101
102 if (Diag == CblasUnit) DI = 'U';
103 else if (Diag == CblasNonUnit) DI = 'N';
104 else
105 {
106 cblas_xerbla(4, "cblas_dtrmv","Illegal Diag setting, %d\n", Diag);
107 CBLAS_CallFromC = 0;
108 RowMajorStrg = 0;
109 return;
110 }
111 #ifdef F77_CHAR
112 F77_UL = C2F_CHAR(&UL);
113 F77_TA = C2F_CHAR(&TA);
114 F77_DI = C2F_CHAR(&DI);
115 #endif
116 F77_dtrmv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
117 &F77_incX);
118 } else cblas_xerbla(1, "cblas_dtrmv", "Illegal order setting, %d\n", order);
119 CBLAS_CallFromC = 0;
120 RowMajorStrg = 0;
121 return;
122 }
123