• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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