v0.8.23
cblas_ctpsv.c
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1 /*
2  * cblas_ctpsv.c
3  * The program is a C interface to ctpsv.
4  *
5  * Keita Teranishi 3/23/98
6  *
7  */
8 #include "cblas.h"
9 #include "cblas_f77.h"
10 void cblas_ctpsv(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 void *Ap, void *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  int n, i=0, tincX;
31  float *st=0, *x=(float*)X;
32  extern int CBLAS_CallFromC;
33  extern int RowMajorStrg;
34  RowMajorStrg = 0;
35 
36  CBLAS_CallFromC = 1;
37  if (order == CblasColMajor)
38  {
39  if (Uplo == CblasUpper) UL = 'U';
40  else if (Uplo == CblasLower) UL = 'L';
41  else
42  {
43  cblas_xerbla(2, "cblas_ctpsv","Illegal Uplo setting, %d\n", Uplo);
44  CBLAS_CallFromC = 0;
45  RowMajorStrg = 0;
46  return;
47  }
48  if (TransA == CblasNoTrans) TA = 'N';
49  else if (TransA == CblasTrans) TA = 'T';
50  else if (TransA == CblasConjTrans) TA = 'C';
51  else
52  {
53  cblas_xerbla(3, "cblas_ctpsv","Illegal TransA setting, %d\n", TransA);
54  CBLAS_CallFromC = 0;
55  RowMajorStrg = 0;
56  return;
57  }
58  if (Diag == CblasUnit) DI = 'U';
59  else if (Diag == CblasNonUnit) DI = 'N';
60  else
61  {
62  cblas_xerbla(4, "cblas_ctpsv","Illegal Diag setting, %d\n", Diag);
63  CBLAS_CallFromC = 0;
64  RowMajorStrg = 0;
65  return;
66  }
67  #ifdef F77_CHAR
68  F77_UL = C2F_CHAR(&UL);
69  F77_TA = C2F_CHAR(&TA);
70  F77_DI = C2F_CHAR(&DI);
71  #endif
72  F77_ctpsv( F77_UL, F77_TA, F77_DI, &F77_N, Ap, X, &F77_incX);
73  }
74  else if (order == CblasRowMajor)
75  {
76  RowMajorStrg = 1;
77  if (Uplo == CblasUpper) UL = 'L';
78  else if (Uplo == CblasLower) UL = 'U';
79  else
80  {
81  cblas_xerbla(2, "cblas_ctpsv","Illegal Uplo setting, %d\n", Uplo);
82  CBLAS_CallFromC = 0;
83  RowMajorStrg = 0;
84  return;
85  }
86 
87  if (TransA == CblasNoTrans) TA = 'T';
88  else if (TransA == CblasTrans) TA = 'N';
89  else if (TransA == CblasConjTrans)
90  {
91  TA = 'N';
92  if ( N > 0)
93  {
94  if ( incX > 0 )
95  tincX = incX;
96  else
97  tincX = -incX;
98 
99  n = N*2*(tincX);
100 
101  x++;
102 
103  st=x+n;
104 
105  i = tincX << 1;
106  do
107  {
108  *x = -(*x);
109  x+=i;
110  }
111  while (x != st);
112  x -= n;
113  }
114  }
115  else
116  {
117  cblas_xerbla(3, "cblas_ctpsv","Illegal TransA setting, %d\n", TransA);
118  CBLAS_CallFromC = 0;
119  RowMajorStrg = 0;
120  return;
121  }
122 
123  if (Diag == CblasUnit) DI = 'U';
124  else if (Diag == CblasNonUnit) DI = 'N';
125  else
126  {
127  cblas_xerbla(4, "cblas_ctpsv","Illegal Diag setting, %d\n", Diag);
128  CBLAS_CallFromC = 0;
129  RowMajorStrg = 0;
130  return;
131  }
132  #ifdef F77_CHAR
133  F77_UL = C2F_CHAR(&UL);
134  F77_TA = C2F_CHAR(&TA);
135  F77_DI = C2F_CHAR(&DI);
136  #endif
137 
138  F77_ctpsv( F77_UL, F77_TA, F77_DI, &F77_N, Ap, X,&F77_incX);
139 
140  if (TransA == CblasConjTrans)
141  {
142  if (N > 0)
143  {
144  do
145  {
146  *x = -(*x);
147  x += i;
148  }
149  while (x != st);
150  }
151  }
152  }
153  else cblas_xerbla(1, "cblas_ctpsv", "Illegal Order setting, %d\n", order);
154  CBLAS_CallFromC = 0;
155  RowMajorStrg = 0;
156  return;
157 }
void F77_ctpsv(FCHAR, FCHAR, FCHAR, FINT, const void *, void *, FINT)
CBLAS_UPLO
Definition: cblas.h:12
#define F77_N
#define F77_DI
CBLAS_TRANSPOSE
Definition: cblas.h:11
int CBLAS_CallFromC
Definition: cblas_globals.c:1
#define F77_TA
#define F77_incX
CBLAS_DIAG
Definition: cblas.h:13
CBLAS_ORDER
Definition: cblas.h:10
void cblas_xerbla(int p, const char *rout, const char *form,...)
Definition: cblas_xerbla.c:8
const int N
Definition: speed_test.cpp:3
#define F77_UL
void cblas_ctpsv(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo, const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_DIAG Diag, const int N, const void *Ap, void *X, const int incX)
Definition: cblas_ctpsv.c:10
const int order
approximation order
int RowMajorStrg
Definition: cblas_globals.c:2