LAPACK  3.7.1
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 36 of file lapacke_dorbdb_work.c.

44 {
45  lapack_int info = 0;
46  /* LAPACK function works with matrices in both layouts. It is supported
47  * through TRANS parameter. So all conversion between layouts can be
48  * completed in LAPACK function. See the table below which describes how
49  * every LAPACKE call is forwarded to corresponding LAPACK call.
50  *
51  * matrix_layout | trans_LAPACKE | -> trans_LAPACK
52  * | (trans) | (ltrans)
53  * -----------------+---------------+----------------
54  * LAPACK_COL_MAJOR | 'N' | -> 'N'
55  * LAPACK_COL_MAJOR | 'T' | -> 'T'
56  * LAPACK_ROW_MAJOR | 'N' | -> 'T'
57  * LAPACK_ROW_MAJOR | 'T' | -> 'T'
58  * (note that for row major layout trans parameter is ignored)
59  */
60  if( matrix_layout == LAPACK_COL_MAJOR ||
61  matrix_layout == LAPACK_ROW_MAJOR ) {
62  char ltrans;
63  if( !LAPACKE_lsame( trans, 't' ) && matrix_layout == LAPACK_COL_MAJOR ) {
64  ltrans = 'n';
65  } else {
66  ltrans = 't';
67  }
68  /* Call LAPACK function and adjust info */
69  LAPACK_dorbdb( &ltrans, &signs, &m, &p, &q, x11, &ldx11, x12, &ldx12,
70  x21, &ldx21, x22, &ldx22, theta, phi, taup1, taup2,
71  tauq1, tauq2, work, &lwork, &info );
72  if( info < 0 ) {
73  info = info - 1;
74  }
75  } else {
76  info = -1;
77  LAPACKE_xerbla( "LAPACKE_dorbdb_work", info );
78  }
79  return info;
80 }
void LAPACK_dorbdb(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, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
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