LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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cblas_ctrmv.c
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1/*
2 * cblas_ctrmv.c
3 * The program is a C interface to ctrmv.
4 *
5 * Keita Teranishi 3/23/98
6 *
7 */
8#include "cblas.h"
9#include "cblas_f77.h"
10void cblas_ctrmv(const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo,
11 const CBLAS_TRANSPOSE TransA, const CBLAS_DIAG Diag,
12 const CBLAS_INT N, const void *A, const CBLAS_INT lda,
13 void *X, const CBLAS_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 CBLAS_INT n, i=0, tincX;
34 float *st=0,*x=(float *)X;
35 extern int CBLAS_CallFromC;
36 extern int RowMajorStrg;
37 RowMajorStrg = 0;
38
40 if (layout == CblasColMajor)
41 {
42 if (Uplo == CblasUpper) UL = 'U';
43 else if (Uplo == CblasLower) UL = 'L';
44 else
45 {
46 cblas_xerbla(2, "cblas_ctrmv","Illegal Uplo setting, %d\n", Uplo);
48 RowMajorStrg = 0;
49 return;
50 }
51 if (TransA == CblasNoTrans) TA = 'N';
52 else if (TransA == CblasTrans) TA = 'T';
53 else if (TransA == CblasConjTrans) TA = 'C';
54 else
55 {
56 cblas_xerbla(3, "cblas_ctrmv","Illegal TransA setting, %d\n", TransA);
58 RowMajorStrg = 0;
59 return;
60 }
61 if (Diag == CblasUnit) DI = 'U';
62 else if (Diag == CblasNonUnit) DI = 'N';
63 else
64 {
65 cblas_xerbla(4, "cblas_ctrmv","Illegal Diag setting, %d\n", Diag);
67 RowMajorStrg = 0;
68 return;
69 }
70 #ifdef F77_CHAR
71 F77_UL = C2F_CHAR(&UL);
72 F77_TA = C2F_CHAR(&TA);
73 F77_DI = C2F_CHAR(&DI);
74 #endif
76 &F77_incX);
77 }
78 else if (layout == CblasRowMajor)
79 {
80 RowMajorStrg = 1;
81 if (Uplo == CblasUpper) UL = 'L';
82 else if (Uplo == CblasLower) UL = 'U';
83 else
84 {
85 cblas_xerbla(2, "cblas_ctrmv","Illegal Uplo setting, %d\n", Uplo);
87 RowMajorStrg = 0;
88 return;
89 }
90
91 if (TransA == CblasNoTrans) TA = 'T';
92 else if (TransA == CblasTrans) TA = 'N';
93 else if (TransA == CblasConjTrans)
94 {
95 TA = 'N';
96 if ( N > 0)
97 {
98 if(incX > 0)
99 tincX = incX;
100 else
101 tincX = -incX;
102 i = tincX << 1;
103 n = i * N;
104 st = x + n;
105 do
106 {
107 x[1] = -x[1];
108 x+= i;
109 }
110 while (x != st);
111 x -= n;
112 }
113 }
114 else
115 {
116 cblas_xerbla(3, "cblas_ctrmv","Illegal TransA setting, %d\n", TransA);
117 CBLAS_CallFromC = 0;
118 RowMajorStrg = 0;
119 return;
120 }
121
122 if (Diag == CblasUnit) DI = 'U';
123 else if (Diag == CblasNonUnit) DI = 'N';
124 else
125 {
126 cblas_xerbla(4, "cblas_ctrmv","Illegal Diag setting, %d\n", Diag);
127 CBLAS_CallFromC = 0;
128 RowMajorStrg = 0;
129 return;
130 }
131 #ifdef F77_CHAR
132 F77_UL = C2F_CHAR(&UL);
133 F77_TA = C2F_CHAR(&TA);
134 F77_DI = C2F_CHAR(&DI);
135 #endif
137 &F77_incX);
138 if (TransA == CblasConjTrans)
139 {
140 if (N > 0)
141 {
142 do
143 {
144 x[1] = -x[1];
145 x += i;
146 }
147 while (x != st);
148 }
149 }
150 }
151 else cblas_xerbla(1, "cblas_ctrmv", "Illegal layout setting, %d\n", layout);
152 CBLAS_CallFromC = 0;
153 RowMajorStrg = 0;
154 return;
155}
CBLAS_UPLO
Definition: cblas.h:41
@ CblasLower
Definition: cblas.h:41
@ CblasUpper
Definition: cblas.h:41
void cblas_xerbla(CBLAS_INT p, const char *rout, const char *form,...)
Definition: cblas_xerbla.c:12
CBLAS_TRANSPOSE
Definition: cblas.h:40
@ CblasNoTrans
Definition: cblas.h:40
@ CblasTrans
Definition: cblas.h:40
@ CblasConjTrans
Definition: cblas.h:40
CBLAS_LAYOUT
Definition: cblas.h:39
@ CblasColMajor
Definition: cblas.h:39
@ CblasRowMajor
Definition: cblas.h:39
CBLAS_DIAG
Definition: cblas.h:42
@ CblasUnit
Definition: cblas.h:42
@ CblasNonUnit
Definition: cblas.h:42
#define CBLAS_INT
Definition: cblas.h:24
#define F77_DI
#define F77_incX
#define F77_TA
#define F77_N
#define F77_lda
#define F77_UL
void cblas_ctrmv(const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo, const CBLAS_TRANSPOSE TransA, const CBLAS_DIAG Diag, const CBLAS_INT N, const void *A, const CBLAS_INT lda, void *X, const CBLAS_INT incX)
Definition: cblas_ctrmv.c:10
#define F77_ctrmv(...)
Definition: cblas_f77.h:338
#define F77_INT
Definition: cblas_f77.h:32
int CBLAS_CallFromC
Definition: cblas_globals.c:1
int RowMajorStrg
Definition: cblas_globals.c:2
#define N
Definition: example_user.c:10