LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dormbr()

lapack_int LAPACKE_dormbr ( int  matrix_layout,
char  vect,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
const double *  a,
lapack_int  lda,
const double *  tau,
double *  c,
lapack_int  ldc 
)

Definition at line 36 of file lapacke_dormbr.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  double* work = NULL;
44  double work_query;
45  lapack_int nq, ar, ac;
46  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47  LAPACKE_xerbla( "LAPACKE_dormbr", -1 );
48  return -1;
49  }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
51  /* Optionally check input matrices for NaNs */
52  nq = LAPACKE_lsame( side, 'l' ) ? m : n;
53  ar = LAPACKE_lsame( vect, 'q' ) ? nq : MIN(nq,k);
54  ac = LAPACKE_lsame( vect, 'q' ) ? MIN(nq,k) : nq;
55  if( LAPACKE_dge_nancheck( matrix_layout, ar, ac, a, lda ) ) {
56  return -8;
57  }
58  if( LAPACKE_dge_nancheck( matrix_layout, m, n, c, ldc ) ) {
59  return -11;
60  }
61  if( LAPACKE_d_nancheck( MIN(nq,k), tau, 1 ) ) {
62  return -10;
63  }
64 #endif
65  /* Query optimal working array(s) size */
66  info = LAPACKE_dormbr_work( matrix_layout, vect, side, trans, m, n, k, a,
67  lda, tau, c, ldc, &work_query, lwork );
68  if( info != 0 ) {
69  goto exit_level_0;
70  }
71  lwork = (lapack_int)work_query;
72  /* Allocate memory for work arrays */
73  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
74  if( work == NULL ) {
76  goto exit_level_0;
77  }
78  /* Call middle-level interface */
79  info = LAPACKE_dormbr_work( matrix_layout, vect, side, trans, m, n, k, a,
80  lda, tau, c, ldc, work, lwork );
81  /* Release memory and exit */
82  LAPACKE_free( work );
83 exit_level_0:
84  if( info == LAPACK_WORK_MEMORY_ERROR ) {
85  LAPACKE_xerbla( "LAPACKE_dormbr", info );
86  }
87  return info;
88 }
lapack_int LAPACKE_dormbr_work(int matrix_layout, char vect, char side, char trans, lapack_int m, lapack_int n, lapack_int k, const double *a, lapack_int lda, const double *tau, double *c, lapack_int ldc, double *work, lapack_int lwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MIN(x, y)
Definition: lapacke_utils.h:50
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
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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