LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgemqr()

lapack_int LAPACKE_zgemqr ( int  matrix_layout,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
const lapack_complex_double a,
lapack_int  lda,
const lapack_complex_double t,
lapack_int  tsize,
lapack_complex_double c,
lapack_int  ldc 
)

Definition at line 36 of file lapacke_zgemqr.c.

41 {
42  lapack_int info = 0;
43  lapack_int lwork = -1;
44  lapack_complex_double* work = NULL;
45  lapack_complex_double work_query;
46  lapack_int r;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_zgemqr", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  /* Optionally check input matrices for NaNs */
53  r = LAPACKE_lsame( side, 'l' ) ? m : n;
54  if( LAPACKE_zge_nancheck( matrix_layout, r, k, a, lda ) ) {
55  return -7;
56  }
57  if( LAPACKE_zge_nancheck( matrix_layout, m, n, c, ldc ) ) {
58  return -10;
59  }
60  if( LAPACKE_z_nancheck( tsize, t, 1 ) ) {
61  return -9;
62  }
63 #endif
64  /* Query optimal working array(s) size */
65  info = LAPACKE_zgemqr_work( matrix_layout, side, trans, m, n, k, a, lda,
66  t, tsize, c, ldc, &work_query, lwork );
67  if( info != 0 ) {
68  goto exit_level_0;
69  }
70  lwork = LAPACK_Z2INT( work_query );
71  /* Allocate memory for work arrays */
72  work = (lapack_complex_double*)
73  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
74  if( work == NULL ) {
76  goto exit_level_0;
77  }
78  /* Call middle-level interface */
79  info = LAPACKE_zgemqr_work( matrix_layout, side, trans, m, n, k, a, lda,
80  t, tsize, 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_zgemqr", info );
86  }
87  return info;
88 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
lapack_logical LAPACKE_z_nancheck(lapack_int n, const lapack_complex_double *x, lapack_int incx)
lapack_int LAPACKE_zgemqr_work(int matrix_layout, char side, char trans, lapack_int m, lapack_int n, lapack_int k, const lapack_complex_double *a, lapack_int lda, const lapack_complex_double *t, lapack_int tsize, lapack_complex_double *c, lapack_int ldc, lapack_complex_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 lapack_complex_double
Definition: lapacke.h:90
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
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
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
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