LAPACK  3.10.1
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 35 of file lapacke_cunbdb_work.c.

47 {
48  lapack_int info = 0;
49  /* LAPACK function works with matrices in both layouts. It is supported
50  * through TRANS parameter. So all conversion between layouts can be
51  * completed in LAPACK function. See the table below which describes how
52  * every LAPACKE call is forwarded to corresponding LAPACK call.
53  *
54  * matrix_layout | trans_LAPACKE | -> trans_LAPACK
55  * | (trans) | (ltrans)
56  * -----------------+---------------+----------------
57  * LAPACK_COL_MAJOR | 'N' | -> 'N'
58  * LAPACK_COL_MAJOR | 'T' | -> 'T'
59  * LAPACK_ROW_MAJOR | 'N' | -> 'T'
60  * LAPACK_ROW_MAJOR | 'T' | -> 'T'
61  * (note that for row major layout trans parameter is ignored)
62  */
63  if( matrix_layout == LAPACK_COL_MAJOR ||
64  matrix_layout == LAPACK_ROW_MAJOR ) {
65  char ltrans;
66  if( !LAPACKE_lsame( trans, 't' ) && matrix_layout == LAPACK_COL_MAJOR ) {
67  ltrans = 'n';
68  } else {
69  ltrans = 't';
70  }
71  /* Call LAPACK function and adjust info */
72  LAPACK_cunbdb( &ltrans, &signs, &m, &p, &q, x11, &ldx11, x12, &ldx12,
73  x21, &ldx21, x22, &ldx22, theta, phi, taup1, taup2,
74  tauq1, tauq2, work, &lwork, &info );
75  if( info < 0 ) {
76  info = info - 1;
77  }
78  } else {
79  info = -1;
80  LAPACKE_xerbla( "LAPACKE_cunbdb_work", info );
81  }
82  return info;
83 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_cunbdb(...)
Definition: lapack.h:22310
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
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