LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgebrd()

lapack_int LAPACKE_zgebrd ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
double *  d,
double *  e,
lapack_complex_double tauq,
lapack_complex_double taup 
)

Definition at line 36 of file lapacke_zgebrd.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  lapack_complex_double* work = NULL;
44  lapack_complex_double work_query;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_zgebrd", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  /* Optionally check input matrices for NaNs */
51  if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
52  return -4;
53  }
54 #endif
55  /* Query optimal working array(s) size */
56  info = LAPACKE_zgebrd_work( matrix_layout, m, n, a, lda, d, e, tauq, taup,
57  &work_query, lwork );
58  if( info != 0 ) {
59  goto exit_level_0;
60  }
61  lwork = LAPACK_Z2INT( work_query );
62  /* Allocate memory for work arrays */
63  work = (lapack_complex_double*)
64  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
65  if( work == NULL ) {
67  goto exit_level_0;
68  }
69  /* Call middle-level interface */
70  info = LAPACKE_zgebrd_work( matrix_layout, m, n, a, lda, d, e, tauq, taup,
71  work, lwork );
72  /* Release memory and exit */
73  LAPACKE_free( work );
74 exit_level_0:
75  if( info == LAPACK_WORK_MEMORY_ERROR ) {
76  LAPACKE_xerbla( "LAPACKE_zgebrd", info );
77  }
78  return info;
79 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
#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
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_int LAPACKE_zgebrd_work(int matrix_layout, lapack_int m, lapack_int n, lapack_complex_double *a, lapack_int lda, double *d, double *e, lapack_complex_double *tauq, lapack_complex_double *taup, lapack_complex_double *work, lapack_int lwork)
#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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