LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dormlq()

lapack_int LAPACKE_dormlq ( int  matrix_layout,
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_dormlq.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  double* work = NULL;
44  double work_query;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dormlq", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  lapack_int r = LAPACKE_lsame( side, 'l' ) ? m : n;
53  if( LAPACKE_dge_nancheck( matrix_layout, k, r, a, lda ) ) {
54  return -7;
55  }
56  if( LAPACKE_dge_nancheck( matrix_layout, m, n, c, ldc ) ) {
57  return -10;
58  }
59  if( LAPACKE_d_nancheck( k, tau, 1 ) ) {
60  return -9;
61  }
62  }
63 #endif
64  /* Query optimal working array(s) size */
65  info = LAPACKE_dormlq_work( matrix_layout, side, trans, m, n, k, a, lda, tau,
66  c, ldc, &work_query, lwork );
67  if( info != 0 ) {
68  goto exit_level_0;
69  }
70  lwork = (lapack_int)work_query;
71  /* Allocate memory for work arrays */
72  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
73  if( work == NULL ) {
75  goto exit_level_0;
76  }
77  /* Call middle-level interface */
78  info = LAPACKE_dormlq_work( matrix_layout, side, trans, m, n, k, a, lda, tau,
79  c, ldc, work, lwork );
80  /* Release memory and exit */
81  LAPACKE_free( work );
82 exit_level_0:
83  if( info == LAPACK_WORK_MEMORY_ERROR ) {
84  LAPACKE_xerbla( "LAPACKE_dormlq", info );
85  }
86  return info;
87 }
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
int LAPACKE_get_nancheck()
#define lapack_int
Definition: lapacke.h:47
lapack_int LAPACKE_dormlq_work(int matrix_layout, 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_WORK_MEMORY_ERROR
Definition: lapacke.h:122
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 LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_xerbla(const char *name, lapack_int info)
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