1 /*
2 * cblas_dtrsv.c
3 * The program is a C interface to dtrsv.
4 *
5 * Keita Teranishi 5/20/98
6 *
7 */
8 #include "cblas.h"
9 #include "cblas_f77.h"
cblas_dtrsv(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)10 void cblas_dtrsv(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 double *A, const int lda, double *X,
13 const int incX)
14
15 {
16 char TA;
17 char UL;
18 char DI;
19 #ifdef F77_CHAR
20 F77_CHAR F77_TA, F77_UL, F77_DI;
21 #else
22 #define F77_TA &TA
23 #define F77_UL &UL
24 #define F77_DI &DI
25 #endif
26 #ifdef F77_INT
27 F77_INT F77_N=N, F77_lda=lda, F77_incX=incX;
28 #else
29 #define F77_N N
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_dtrsv","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_dtrsv","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_dtrsv","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_dtrsv( F77_UL, F77_TA, F77_DI, &F77_N, 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_dtrsv","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_dtrsv","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_dtrsv","Illegal Diag setting, %d\n", Diag);
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 F77_dtrsv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
115 &F77_incX);
116 }
117 else cblas_xerbla(1, "cblas_dtrsv", "Illegal Order setting, %d\n", order);
118 CBLAS_CallFromC = 0;
119 RowMajorStrg = 0;
120 return;
121 }
122