LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dorbdb_work()

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

Definition at line 35 of file lapacke_dorbdb_work.c.

43 {
44  lapack_int info = 0;
45  /* LAPACK function works with matrices in both layouts. It is supported
46  * through TRANS parameter. So all conversion between layouts can be
47  * completed in LAPACK function. See the table below which describes how
48  * every LAPACKE call is forwarded to corresponding LAPACK call.
49  *
50  * matrix_layout | trans_LAPACKE | -> trans_LAPACK
51  * | (trans) | (ltrans)
52  * -----------------+---------------+----------------
53  * LAPACK_COL_MAJOR | 'N' | -> 'N'
54  * LAPACK_COL_MAJOR | 'T' | -> 'T'
55  * LAPACK_ROW_MAJOR | 'N' | -> 'T'
56  * LAPACK_ROW_MAJOR | 'T' | -> 'T'
57  * (note that for row major layout trans parameter is ignored)
58  */
59  if( matrix_layout == LAPACK_COL_MAJOR ||
60  matrix_layout == LAPACK_ROW_MAJOR ) {
61  char ltrans;
62  if( !LAPACKE_lsame( trans, 't' ) && matrix_layout == LAPACK_COL_MAJOR ) {
63  ltrans = 'n';
64  } else {
65  ltrans = 't';
66  }
67  /* Call LAPACK function and adjust info */
68  LAPACK_dorbdb( &ltrans, &signs, &m, &p, &q, x11, &ldx11, x12, &ldx12,
69  x21, &ldx21, x22, &ldx22, theta, phi, taup1, taup2,
70  tauq1, tauq2, work, &lwork, &info );
71  if( info < 0 ) {
72  info = info - 1;
73  }
74  } else {
75  info = -1;
76  LAPACKE_xerbla( "LAPACKE_dorbdb_work", info );
77  }
78  return info;
79 }
#define LAPACK_dorbdb(...)
Definition: lapack.h:11201
#define lapack_int
Definition: lapack.h:83
#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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