LAPACK 3.11.0 LAPACK: Linear Algebra PACKage
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## ◆ cblas_ctbsv()

 void cblas_ctbsv ( CBLAS_LAYOUT layout, CBLAS_UPLO Uplo, CBLAS_TRANSPOSE TransA, CBLAS_DIAG Diag, const CBLAS_INT N, const CBLAS_INT K, const void * A, const CBLAS_INT lda, void * X, const CBLAS_INT incX )

Definition at line 10 of file cblas_ctbsv.c.

14{
15 char TA;
16 char UL;
17 char DI;
18#ifdef F77_CHAR
19 F77_CHAR F77_TA, F77_UL, F77_DI;
20#else
21 #define F77_TA &TA
22 #define F77_UL &UL
23 #define F77_DI &DI
24#endif
25#ifdef F77_INT
26 F77_INT F77_N=N, F77_lda=lda, F77_K=K, F77_incX=incX;
27#else
28 #define F77_N N
29 #define F77_K K
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_ctbsv","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_ctbsv","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_ctbsv","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_ctbsv","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
103 n = N*2*(tincX);
104
105 x++;
106
107 st=x+n;
108
109 i = tincX << 1;
110 do
111 {
112 *x = -(*x);
113 x+=i;
114 }
115 while (x != st);
116 x -= n;
117 }
118 }
119 else
120 {
121 cblas_xerbla(3, "cblas_ctbsv","Illegal TransA setting, %d\n", TransA);
122 CBLAS_CallFromC = 0;
123 RowMajorStrg = 0;
124 return;
125 }
126
127 if (Diag == CblasUnit) DI = 'U';
128 else if (Diag == CblasNonUnit) DI = 'N';
129 else
130 {
131 cblas_xerbla(4, "cblas_ctbsv","Illegal Diag setting, %d\n", Diag);
132 CBLAS_CallFromC = 0;
133 RowMajorStrg = 0;
134 return;
135 }
136 #ifdef F77_CHAR
137 F77_UL = C2F_CHAR(&UL);
138 F77_TA = C2F_CHAR(&TA);
139 F77_DI = C2F_CHAR(&DI);
140 #endif
141
143 &F77_incX);
144
145 if (TransA == CblasConjTrans)
146 {
147 if (N > 0)
148 {
149 do
150 {
151 *x = -(*x);
152 x+= i;
153 }
154 while (x != st);
155 }
156 }
157 }
158 else cblas_xerbla(1, "cblas_ctbsv", "Illegal layout setting, %d\n", layout);
159 CBLAS_CallFromC = 0;
160 RowMajorStrg = 0;
161 return;
162}
@ 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
@ CblasNoTrans
Definition: cblas.h:40
@ CblasTrans
Definition: cblas.h:40
@ CblasConjTrans
Definition: cblas.h:40
@ CblasColMajor
Definition: cblas.h:39
@ CblasRowMajor
Definition: cblas.h:39
@ 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_K
#define F77_TA
#define F77_N
#define F77_lda
#define F77_UL
#define F77_ctbsv(...)
Definition: cblas_f77.h:342
#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
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