LAPACK  3.8.0 LAPACK: Linear Algebra PACKage

## ◆ LAPACKE_cunbdb_work()

 lapack_int LAPACKE_cunbdb_work ( int matrix_layout, char trans, char signs, lapack_int m, lapack_int p, lapack_int q, lapack_complex_float * x11, lapack_int ldx11, lapack_complex_float * x12, lapack_int ldx12, lapack_complex_float * x21, lapack_int ldx21, lapack_complex_float * x22, lapack_int ldx22, float * theta, float * phi, lapack_complex_float * taup1, lapack_complex_float * taup2, lapack_complex_float * tauq1, lapack_complex_float * tauq2, lapack_complex_float * work, lapack_int lwork )

Definition at line 36 of file lapacke_cunbdb_work.c.

48 {
49  lapack_int info = 0;
50  /* LAPACK function works with matrices in both layouts. It is supported
51  * through TRANS parameter. So all conversion between layouts can be
52  * completed in LAPACK function. See the table below which describes how
53  * every LAPACKE call is forwarded to corresponding LAPACK call.
54  *
55  * matrix_layout | trans_LAPACKE | -> trans_LAPACK
56  * | (trans) | (ltrans)
57  * -----------------+---------------+----------------
58  * LAPACK_COL_MAJOR | 'N' | -> 'N'
59  * LAPACK_COL_MAJOR | 'T' | -> 'T'
60  * LAPACK_ROW_MAJOR | 'N' | -> 'T'
61  * LAPACK_ROW_MAJOR | 'T' | -> 'T'
62  * (note that for row major layout trans parameter is ignored)
63  */
64  if( matrix_layout == LAPACK_COL_MAJOR ||
65  matrix_layout == LAPACK_ROW_MAJOR ) {
66  char ltrans;
67  if( !LAPACKE_lsame( trans, 't' ) && matrix_layout == LAPACK_COL_MAJOR ) {
68  ltrans = 'n';
69  } else {
70  ltrans = 't';
71  }
72  /* Call LAPACK function and adjust info */
73  LAPACK_cunbdb( &ltrans, &signs, &m, &p, &q, x11, &ldx11, x12, &ldx12,
74  x21, &ldx21, x22, &ldx22, theta, phi, taup1, taup2,
75  tauq1, tauq2, work, &lwork, &info );
76  if( info < 0 ) {
77  info = info - 1;
78  }
79  } else {
80  info = -1;
81  LAPACKE_xerbla( "LAPACKE_cunbdb_work", info );
82  }
83  return info;
84 }
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define lapack_int
Definition: lapacke.h:47
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
void LAPACK_cunbdb(char *trans, char *signs, lapack_int *m, lapack_int *p, lapack_int *q, lapack_complex_float *x11, lapack_int *ldx11, lapack_complex_float *x12, lapack_int *ldx12, lapack_complex_float *x21, lapack_int *ldx21, lapack_complex_float *x22, lapack_int *ldx22, float *theta, float *phi, lapack_complex_float *taup1, lapack_complex_float *taup2, lapack_complex_float *tauq1, lapack_complex_float *tauq2, lapack_complex_float *work, lapack_int *lwork, lapack_int *info)
void LAPACKE_xerbla(const char *name, lapack_int info)
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