LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zungrq()

lapack_int LAPACKE_zungrq ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  k,
lapack_complex_double a,
lapack_int  lda,
const lapack_complex_double tau 
)

Definition at line 36 of file lapacke_zungrq.c.

39 {
40  lapack_int info = 0;
41  lapack_int lwork = -1;
42  lapack_complex_double* work = NULL;
43  lapack_complex_double work_query;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_zungrq", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
51  return -5;
52  }
53  if( LAPACKE_z_nancheck( k, tau, 1 ) ) {
54  return -7;
55  }
56 #endif
57  /* Query optimal working array(s) size */
58  info = LAPACKE_zungrq_work( matrix_layout, m, n, k, a, lda, tau, &work_query,
59  lwork );
60  if( info != 0 ) {
61  goto exit_level_0;
62  }
63  lwork = LAPACK_Z2INT( work_query );
64  /* Allocate memory for work arrays */
65  work = (lapack_complex_double*)
66  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
67  if( work == NULL ) {
69  goto exit_level_0;
70  }
71  /* Call middle-level interface */
72  info = LAPACKE_zungrq_work( matrix_layout, m, n, k, a, lda, tau, work,
73  lwork );
74  /* Release memory and exit */
75  LAPACKE_free( work );
76 exit_level_0:
77  if( info == LAPACK_WORK_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_zungrq", info );
79  }
80  return info;
81 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
lapack_logical LAPACKE_z_nancheck(lapack_int n, const lapack_complex_double *x, lapack_int incx)
#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_int LAPACKE_zungrq_work(int matrix_layout, lapack_int m, lapack_int n, lapack_int k, lapack_complex_double *a, lapack_int lda, const lapack_complex_double *tau, lapack_complex_double *work, lapack_int lwork)
#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)
Here is the call graph for this function: