1 /*
2 *
3 * cblas_dtrsm.c
4 * This program is a C interface to dtrsm.
5 * Written by Keita Teranishi
6 * 4/6/1998
7 *
8 */
9
10 #include "cblas.h"
11 #include "cblas_f77.h"
cblas_dtrsm(const enum CBLAS_ORDER Order,const enum CBLAS_SIDE Side,const enum CBLAS_UPLO Uplo,const enum CBLAS_TRANSPOSE TransA,const enum CBLAS_DIAG Diag,const int M,const int N,const double alpha,const double * A,const int lda,double * B,const int ldb)12 void cblas_dtrsm(const enum CBLAS_ORDER Order, const enum CBLAS_SIDE Side,
13 const enum CBLAS_UPLO Uplo, const enum CBLAS_TRANSPOSE TransA,
14 const enum CBLAS_DIAG Diag, const int M, const int N,
15 const double alpha, const double *A, const int lda,
16 double *B, const int ldb)
17
18 {
19 char UL, TA, SD, DI;
20 #ifdef F77_CHAR
21 F77_CHAR F77_TA, F77_UL, F77_SD, F77_DI;
22 #else
23 #define F77_TA &TA
24 #define F77_UL &UL
25 #define F77_SD &SD
26 #define F77_DI &DI
27 #endif
28
29 #ifdef F77_INT
30 F77_INT F77_M=M, F77_N=N, F77_lda=lda, F77_ldb=ldb;
31 #else
32 #define F77_M M
33 #define F77_N N
34 #define F77_lda lda
35 #define F77_ldb ldb
36 #endif
37
38 extern int CBLAS_CallFromC;
39 extern int RowMajorStrg;
40 RowMajorStrg = 0;
41 CBLAS_CallFromC = 1;
42
43 if( Order == CblasColMajor )
44 {
45 if ( Side == CblasRight) SD='R';
46 else if ( Side == CblasLeft ) SD='L';
47 else
48 {
49 cblas_xerbla(2, "cblas_dtrsm","Illegal Side setting, %d\n", Side);
50 CBLAS_CallFromC = 0;
51 RowMajorStrg = 0;
52 return;
53 }
54 if ( Uplo == CblasUpper) UL='U';
55 else if ( Uplo == CblasLower) UL='L';
56 else
57 {
58 cblas_xerbla(3, "cblas_dtrsm","Illegal Uplo setting, %d\n", Uplo);
59 CBLAS_CallFromC = 0;
60 RowMajorStrg = 0;
61 return;
62 }
63
64 if ( TransA == CblasTrans ) TA='T';
65 else if ( TransA == CblasConjTrans) TA='C';
66 else if ( TransA == CblasNoTrans ) TA='N';
67 else
68 {
69 cblas_xerbla(4, "cblas_dtrsm","Illegal Trans setting, %d\n", TransA);
70 CBLAS_CallFromC = 0;
71 RowMajorStrg = 0;
72 return;
73 }
74
75 if ( Diag == CblasUnit ) DI='U';
76 else if ( Diag == CblasNonUnit) DI='N';
77 else
78 {
79 cblas_xerbla(5, "cblas_dtrsm","Illegal Diag setting, %d\n", Diag);
80 CBLAS_CallFromC = 0;
81 RowMajorStrg = 0;
82 return;
83 }
84
85 #ifdef F77_CHAR
86 F77_UL = C2F_CHAR(&UL);
87 F77_TA = C2F_CHAR(&TA);
88 F77_SD = C2F_CHAR(&SD);
89 F77_DI = C2F_CHAR(&DI);
90 #endif
91
92 F77_dtrsm(F77_SD, F77_UL, F77_TA, F77_DI, &F77_M, &F77_N, &alpha,
93 A, &F77_lda, B, &F77_ldb);
94 }
95 else if (Order == CblasRowMajor)
96 {
97 RowMajorStrg = 1;
98 if ( Side == CblasRight) SD='L';
99 else if ( Side == CblasLeft ) SD='R';
100 else
101 {
102 cblas_xerbla(2, "cblas_dtrsm","Illegal Side setting, %d\n", Side);
103 CBLAS_CallFromC = 0;
104 RowMajorStrg = 0;
105 return;
106 }
107
108 if ( Uplo == CblasUpper) UL='L';
109 else if ( Uplo == CblasLower) UL='U';
110 else
111 {
112 cblas_xerbla(3, "cblas_dtrsm","Illegal Uplo setting, %d\n", Uplo);
113 CBLAS_CallFromC = 0;
114 RowMajorStrg = 0;
115 return;
116 }
117
118 if ( TransA == CblasTrans ) TA='T';
119 else if ( TransA == CblasConjTrans) TA='C';
120 else if ( TransA == CblasNoTrans ) TA='N';
121 else
122 {
123 cblas_xerbla(4, "cblas_dtrsm","Illegal Trans setting, %d\n", TransA);
124 CBLAS_CallFromC = 0;
125 RowMajorStrg = 0;
126 return;
127 }
128
129 if ( Diag == CblasUnit ) DI='U';
130 else if ( Diag == CblasNonUnit) DI='N';
131 else
132 {
133 cblas_xerbla(5, "cblas_dtrsm","Illegal Diag setting, %d\n", Diag);
134 CBLAS_CallFromC = 0;
135 RowMajorStrg = 0;
136 return;
137 }
138
139 #ifdef F77_CHAR
140 F77_UL = C2F_CHAR(&UL);
141 F77_TA = C2F_CHAR(&TA);
142 F77_SD = C2F_CHAR(&SD);
143 F77_DI = C2F_CHAR(&DI);
144 #endif
145
146 F77_dtrsm(F77_SD, F77_UL, F77_TA, F77_DI, &F77_N, &F77_M, &alpha, A,
147 &F77_lda, B, &F77_ldb);
148 }
149 else cblas_xerbla(1, "cblas_dtrsm","Illegal Order setting, %d\n", Order);
150 CBLAS_CallFromC = 0;
151 RowMajorStrg = 0;
152 return;
153 }
154