LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dggqrf()

lapack_int LAPACKE_dggqrf ( int  matrix_layout,
lapack_int  n,
lapack_int  m,
lapack_int  p,
double *  a,
lapack_int  lda,
double *  taua,
double *  b,
lapack_int  ldb,
double *  taub 
)

Definition at line 36 of file lapacke_dggqrf.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_dggqrf", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_dge_nancheck( matrix_layout, n, m, a, lda ) ) {
53  return -5;
54  }
55  if( LAPACKE_dge_nancheck( matrix_layout, n, p, b, ldb ) ) {
56  return -8;
57  }
58  }
59 #endif
60  /* Query optimal working array(s) size */
61  info = LAPACKE_dggqrf_work( matrix_layout, n, m, p, a, lda, taua, b, ldb,
62  taub, &work_query, lwork );
63  if( info != 0 ) {
64  goto exit_level_0;
65  }
66  lwork = (lapack_int)work_query;
67  /* Allocate memory for work arrays */
68  work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
69  if( work == NULL ) {
71  goto exit_level_0;
72  }
73  /* Call middle-level interface */
74  info = LAPACKE_dggqrf_work( matrix_layout, n, m, p, a, lda, taua, b, ldb,
75  taub, work, lwork );
76  /* Release memory and exit */
77  LAPACKE_free( work );
78 exit_level_0:
79  if( info == LAPACK_WORK_MEMORY_ERROR ) {
80  LAPACKE_xerbla( "LAPACKE_dggqrf", info );
81  }
82  return info;
83 }
#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_int LAPACKE_dggqrf_work(int matrix_layout, lapack_int n, lapack_int m, lapack_int p, double *a, lapack_int lda, double *taua, double *b, lapack_int ldb, double *taub, double *work, lapack_int lwork)
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
#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()
Here is the call graph for this function: