LAPACK  3.8.0
LAPACK: Linear Algebra PACKage
cblas_dtrsv.c
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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"
10 void cblas_dtrsv(const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo,
11  const CBLAS_TRANSPOSE TransA, const 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 (layout == 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 (layout == 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 layout setting, %d\n", layout);
118  CBLAS_CallFromC = 0;
119  RowMajorStrg = 0;
120  return;
121 }
int RowMajorStrg
Definition: cblas_globals.c:2
#define F77_dtrsv
Definition: cblas_f77.h:139
CBLAS_DIAG
Definition: cblas.h:22
#define F77_DI
#define F77_TA
CBLAS_TRANSPOSE
Definition: cblas.h:20
#define F77_incX
CBLAS_UPLO
Definition: cblas.h:21
CBLAS_LAYOUT
Definition: cblas.h:19
void cblas_dtrsv(const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo, const CBLAS_TRANSPOSE TransA, const CBLAS_DIAG Diag, const int N, const double *A, const int lda, double *X, const int incX)
Definition: cblas_dtrsv.c:10
int CBLAS_CallFromC
Definition: cblas_globals.c:1
#define F77_lda
void cblas_xerbla(int p, const char *rout, const char *form,...)
Definition: cblas_xerbla.c:8
#define F77_N
#define F77_UL
#define N
Definition: example_user.c:10