LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dormqr()

lapack_int LAPACKE_dormqr ( 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_dormqr.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  double* work = NULL;
44  double work_query;
45  lapack_int r;
46  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47  LAPACKE_xerbla( "LAPACKE_dormqr", -1 );
48  return -1;
49  }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
51  if( LAPACKE_get_nancheck() ) {
52  /* Optionally check input matrices for NaNs */
53  r = LAPACKE_lsame( side, 'l' ) ? m : n;
54  if( LAPACKE_dge_nancheck( matrix_layout, r, k, a, lda ) ) {
55  return -7;
56  }
57  if( LAPACKE_dge_nancheck( matrix_layout, m, n, c, ldc ) ) {
58  return -10;
59  }
60  if( LAPACKE_d_nancheck( k, tau, 1 ) ) {
61  return -9;
62  }
63  }
64 #endif
65  /* Query optimal working array(s) size */
66  info = LAPACKE_dormqr_work( matrix_layout, side, trans, m, n, k, a, lda, tau,
67  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_dormqr_work( matrix_layout, side, trans, m, n, k, a, lda, tau,
80  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_dormqr", info );
86  }
87  return info;
88 }
#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
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
lapack_int LAPACKE_dormqr_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 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
int LAPACKE_get_nancheck()
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