LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgeqrt()

lapack_int LAPACKE_dgeqrt ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  nb,
double *  a,
lapack_int  lda,
double *  t,
lapack_int  ldt 
)

Definition at line 36 of file lapacke_dgeqrt.c.

39 {
40  lapack_int info = 0;
41  double* work = NULL;
42  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
43  LAPACKE_xerbla( "LAPACKE_dgeqrt", -1 );
44  return -1;
45  }
46 #ifndef LAPACK_DISABLE_NAN_CHECK
47  if( LAPACKE_get_nancheck() ) {
48  /* Optionally check input matrices for NaNs */
49  if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
50  return -5;
51  }
52  }
53 #endif
54  /* Allocate memory for working array(s) */
55  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,nb) * MAX(1,n) );
56  if( work == NULL ) {
58  goto exit_level_0;
59  }
60  /* Call middle-level interface */
61  info = LAPACKE_dgeqrt_work( matrix_layout, m, n, nb, a, lda, t, ldt, work );
62  /* Release memory and exit */
63  LAPACKE_free( work );
64 exit_level_0:
65  if( info == LAPACK_WORK_MEMORY_ERROR ) {
66  LAPACKE_xerbla( "LAPACKE_dgeqrt", info );
67  }
68  return info;
69 }
#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_dgeqrt_work(int matrix_layout, lapack_int m, lapack_int n, lapack_int nb, double *a, lapack_int lda, double *t, lapack_int ldt, double *work)
#define MAX(x, y)
Definition: lapacke_utils.h:47
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()
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