1 /*
2 * cblas_ztpsv.c
3 * The program is a C interface to ztpsv.
4 *
5 * Keita Teranishi 3/23/98
6 *
7 */
8 #include "cblas.h"
9 #include "cblas_f77.h"
cblas_ztpsv(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)10 void cblas_ztpsv(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 double *st=0, *x=(double*)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_ztpsv","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_ztpsv","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_ztpsv","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_ztpsv( 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_ztpsv","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_ztpsv","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_ztpsv","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_ztpsv( 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_ztpsv", "Illegal Order setting, %d\n", order);
154 CBLAS_CallFromC = 0;
155 RowMajorStrg = 0;
156 return;
157 }
158