LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ cblas_ctrsv()

void cblas_ctrsv ( CBLAS_LAYOUT  layout,
CBLAS_UPLO  Uplo,
CBLAS_TRANSPOSE  TransA,
CBLAS_DIAG  Diag,
const int  N,
const void *  A,
const int  lda,
void *  X,
const int  incX 
)

Definition at line 10 of file cblas_ctrsv.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_incX=incX;
27 #else
28  #define F77_N N
29  #define F77_lda lda
30  #define F77_incX incX
31 #endif
32  int n, i=0, tincX;
33  float *st=0,*x=(float *)X;
34  extern int CBLAS_CallFromC;
35  extern int RowMajorStrg;
36  RowMajorStrg = 0;
37 
38  CBLAS_CallFromC = 1;
39  if (layout == CblasColMajor)
40  {
41  if (Uplo == CblasUpper) UL = 'U';
42  else if (Uplo == CblasLower) UL = 'L';
43  else
44  {
45  cblas_xerbla(2, "cblas_ctrsv","Illegal Uplo setting, %d\n", Uplo);
46  CBLAS_CallFromC = 0;
47  RowMajorStrg = 0;
48  return;
49  }
50  if (TransA == CblasNoTrans) TA = 'N';
51  else if (TransA == CblasTrans) TA = 'T';
52  else if (TransA == CblasConjTrans) TA = 'C';
53  else
54  {
55  cblas_xerbla(3, "cblas_ctrsv","Illegal TransA setting, %d\n", TransA);
56  CBLAS_CallFromC = 0;
57  RowMajorStrg = 0;
58  return;
59  }
60  if (Diag == CblasUnit) DI = 'U';
61  else if (Diag == CblasNonUnit) DI = 'N';
62  else
63  {
64  cblas_xerbla(4, "cblas_ctrsv","Illegal Diag setting, %d\n", Diag);
65  CBLAS_CallFromC = 0;
66  RowMajorStrg = 0;
67  return;
68  }
69  #ifdef F77_CHAR
70  F77_UL = C2F_CHAR(&UL);
71  F77_TA = C2F_CHAR(&TA);
72  F77_DI = C2F_CHAR(&DI);
73  #endif
74  F77_ctrsv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
75  &F77_incX);
76  }
77  else if (layout == CblasRowMajor)
78  {
79  RowMajorStrg = 1;
80  if (Uplo == CblasUpper) UL = 'L';
81  else if (Uplo == CblasLower) UL = 'U';
82  else
83  {
84  cblas_xerbla(2, "cblas_ctrsv","Illegal Uplo setting, %d\n", Uplo);
85  CBLAS_CallFromC = 0;
86  RowMajorStrg = 0;
87  return;
88  }
89 
90  if (TransA == CblasNoTrans) TA = 'T';
91  else if (TransA == CblasTrans) TA = 'N';
92  else if (TransA == CblasConjTrans)
93  {
94  TA = 'N';
95  if ( N > 0)
96  {
97  if ( incX > 0 )
98  tincX = incX;
99  else
100  tincX = -incX;
101 
102  n = N*2*(tincX);
103  x++;
104  st=x+n;
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_ctrsv","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_ctrsv","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  F77_ctrsv( F77_UL, F77_TA, F77_DI, &F77_N, A, &F77_lda, X,
138  &F77_incX);
139  if (TransA == CblasConjTrans)
140  {
141  if (N > 0)
142  {
143  do
144  {
145  *x = -(*x);
146  x += i;
147  }
148  while (x != st);
149  }
150  }
151  }
152  else cblas_xerbla(1, "cblas_ctrsv", "Illegal layout setting, %d\n", layout);
153  CBLAS_CallFromC = 0;
154  RowMajorStrg = 0;
155  return;
156 }
int RowMajorStrg
Definition: cblas_globals.c:2
#define F77_ctrsv
Definition: cblas_f77.h:147
#define F77_DI
#define F77_TA
#define F77_incX
#define F77_lda
int CBLAS_CallFromC
Definition: cblas_globals.c:1
void cblas_xerbla(int p, const char *rout, const char *form,...)
Definition: cblas_xerbla.c:8
#define F77_N
#define N
Definition: example_user.c:10
#define F77_UL
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