1/*
2 * cblas_dtpsv.c
3 * The program is a C interface to dtpsv.
4 *
5 * Keita Teranishi  5/20/98
6 *
7 */
8#include "cblas.h"
9#include "cblas_f77.h"
10void cblas_dtpsv(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  *Ap, double  *X, const int incX)
13{
14   char TA;
15   char UL;
16   char DI;
17#ifdef F77_CHAR
18   F77_CHAR F77_TA, F77_UL, F77_DI;
19#else
20   #define F77_TA &TA
21   #define F77_UL &UL
22   #define F77_DI &DI
23#endif
24#ifdef F77_INT
25   F77_INT F77_N=N, F77_incX=incX;
26#else
27   #define F77_N N
28   #define F77_incX incX
29#endif
30   extern int CBLAS_CallFromC;
31   extern int RowMajorStrg;
32   RowMajorStrg = 0;
33
34   CBLAS_CallFromC = 1;
35   if (order == CblasColMajor)
36   {
37      if (Uplo == CblasUpper) UL = 'U';
38      else if (Uplo == CblasLower) UL = 'L';
39      else
40      {
41         cblas_xerbla(2, "cblas_dtpsv","Illegal Uplo setting, %d\n", Uplo);
42         CBLAS_CallFromC = 0;
43         RowMajorStrg = 0;
44         return;
45      }
46      if (TransA == CblasNoTrans) TA = 'N';
47      else if (TransA == CblasTrans) TA = 'T';
48      else if (TransA == CblasConjTrans) TA = 'C';
49      else
50      {
51         cblas_xerbla(3, "cblas_dtpsv","Illegal TransA setting, %d\n", TransA);
52         CBLAS_CallFromC = 0;
53         RowMajorStrg = 0;
54         return;
55      }
56      if (Diag == CblasUnit) DI = 'U';
57      else if (Diag == CblasNonUnit) DI = 'N';
58      else
59      {
60         cblas_xerbla(4, "cblas_dtpsv","Illegal Diag setting, %d\n", Diag);
61         CBLAS_CallFromC = 0;
62         RowMajorStrg = 0;
63         return;
64      }
65      #ifdef F77_CHAR
66         F77_UL = C2F_CHAR(&UL);
67         F77_TA = C2F_CHAR(&TA);
68         F77_DI = C2F_CHAR(&DI);
69      #endif
70      F77_dtpsv( F77_UL, F77_TA, F77_DI, &F77_N, Ap, X, &F77_incX);
71   }
72   else if (order == CblasRowMajor)
73   {
74      RowMajorStrg = 1;
75      if (Uplo == CblasUpper) UL = 'L';
76      else if (Uplo == CblasLower) UL = 'U';
77      else
78      {
79         cblas_xerbla(2, "cblas_dtpsv","Illegal Uplo setting, %d\n", Uplo);
80         CBLAS_CallFromC = 0;
81         RowMajorStrg = 0;
82         return;
83      }
84
85      if (TransA == CblasNoTrans) TA = 'T';
86      else if (TransA == CblasTrans) TA = 'N';
87      else if (TransA == CblasConjTrans) TA = 'N';
88      else
89      {
90         cblas_xerbla(3, "cblas_dtpsv","Illegal TransA setting, %d\n", TransA);
91         CBLAS_CallFromC = 0;
92         RowMajorStrg = 0;
93         return;
94      }
95
96      if (Diag == CblasUnit) DI = 'U';
97      else if (Diag == CblasNonUnit) DI = 'N';
98      else
99      {
100         cblas_xerbla(4, "cblas_dtpsv","Illegal Diag setting, %d\n", Diag);
101         CBLAS_CallFromC = 0;
102         RowMajorStrg = 0;
103         return;
104      }
105      #ifdef F77_CHAR
106         F77_UL = C2F_CHAR(&UL);
107         F77_TA = C2F_CHAR(&TA);
108         F77_DI = C2F_CHAR(&DI);
109      #endif
110
111      F77_dtpsv( F77_UL, F77_TA, F77_DI, &F77_N, Ap, X,&F77_incX);
112
113   }
114   else cblas_xerbla(1, "cblas_dtpsv", "Illegal Order setting, %d\n", order);
115   CBLAS_CallFromC = 0;
116   RowMajorStrg = 0;
117   return;
118}
119