LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ cblas_ctbmv()

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

Definition at line 10 of file cblas_ctbmv.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  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 
39  CBLAS_CallFromC = 1;
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_ctbmv","Illegal Uplo setting, %d\n", Uplo);
47  CBLAS_CallFromC = 0;
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_ctbmv","Illegal TransA setting, %d\n", TransA);
57  CBLAS_CallFromC = 0;
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_ctbmv","Illegal Diag setting, %d\n", Diag);
66  CBLAS_CallFromC = 0;
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
75  F77_ctbmv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X,
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_ctbmv","Illegal Uplo setting, %d\n", Uplo);
86  CBLAS_CallFromC = 0;
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  x++;
105  st = x + n;
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_ctbmv","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_ctbmv","Illegal Uplo setting, %d\n", Uplo);
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_ctbmv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X,
139  &F77_incX);
140 
141  if (TransA == CblasConjTrans)
142  {
143  if (N > 0)
144  {
145  do
146  {
147  *x = -(*x);
148  x += i;
149  }
150  while (x != st);
151  }
152  }
153  }
154  else cblas_xerbla(1, "cblas_ctbmv", "Illegal layout setting, %d\n", layout);
155  CBLAS_CallFromC = 0;
156  RowMajorStrg = 0;
157  return;
158 }
#define F77_TA
#define F77_ctbmv
Definition: cblas_f77.h:145
int RowMajorStrg
Definition: cblas_globals.c:2
#define F77_K
#define F77_N
#define F77_incX
#define F77_DI
#define F77_UL
#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 N
Definition: example_user.c:10
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