1 /*
2 * cblas_ctpmv.c
3 * The program is a C interface to ctpmv.
4 *
5 * Keita Teranishi 5/20/98
6 *
7 */
8 #include "cblas.h"
9 #include "cblas_f77.h"
cblas_ctpmv(const CBLAS_LAYOUT layout,const CBLAS_UPLO Uplo,const CBLAS_TRANSPOSE TransA,const CBLAS_DIAG Diag,const CBLAS_INDEX N,const void * Ap,void * X,const CBLAS_INDEX incX)10 void cblas_ctpmv(const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo,
11 const CBLAS_TRANSPOSE TransA, const CBLAS_DIAG Diag,
12 const CBLAS_INDEX N, const void *Ap, void *X, const CBLAS_INDEX 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 CBLAS_INDEX 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 (layout == CblasColMajor)
38 {
39 if (Uplo == CblasUpper) UL = 'U';
40 else if (Uplo == CblasLower) UL = 'L';
41 else
42 {
43 cblas_xerbla(2, "cblas_ctpmv","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_ctpmv","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_ctpmv","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_ctpmv( F77_UL, F77_TA, F77_DI, &F77_N, Ap, X, &F77_incX);
73 }
74 else if (layout == 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_ctpmv","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 i = tincX << 1;
99 n = i * N;
100 x++;
101 st = x + n;
102 do
103 {
104 *x = -(*x);
105 x += i;
106 }
107 while (x != st);
108 x -= n;
109 }
110 }
111 else
112 {
113 cblas_xerbla(3, "cblas_ctpmv","Illegal TransA setting, %d\n", TransA);
114 CBLAS_CallFromC = 0;
115 RowMajorStrg = 0;
116 return;
117 }
118
119 if (Diag == CblasUnit) DI = 'U';
120 else if (Diag == CblasNonUnit) DI = 'N';
121 else
122 {
123 cblas_xerbla(4, "cblas_ctpmv","Illegal Diag setting, %d\n", Diag);
124 CBLAS_CallFromC = 0;
125 RowMajorStrg = 0;
126 return;
127 }
128 #ifdef F77_CHAR
129 F77_UL = C2F_CHAR(&UL);
130 F77_TA = C2F_CHAR(&TA);
131 F77_DI = C2F_CHAR(&DI);
132 #endif
133
134 F77_ctpmv( F77_UL, F77_TA, F77_DI, &F77_N, Ap, X,&F77_incX);
135 if (TransA == CblasConjTrans)
136 {
137 if (N > 0)
138 {
139 do
140 {
141 *x = -(*x);
142 x += i;
143 }
144 while (x != st);
145 }
146 }
147 }
148 else cblas_xerbla(1, "cblas_ctpmv", "Illegal layout setting, %d\n", layout);
149 CBLAS_CallFromC = 0;
150 RowMajorStrg = 0;
151 return;
152 }
153