LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgebrd()

lapack_int LAPACKE_cgebrd ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
float *  d,
float *  e,
lapack_complex_float tauq,
lapack_complex_float taup 
)

Definition at line 36 of file lapacke_cgebrd.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = -1;
43  lapack_complex_float* work = NULL;
44  lapack_complex_float work_query;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_cgebrd", -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_cge_nancheck( matrix_layout, m, n, a, lda ) ) {
53  return -4;
54  }
55  }
56 #endif
57  /* Query optimal working array(s) size */
58  info = LAPACKE_cgebrd_work( matrix_layout, m, n, a, lda, d, e, tauq, taup,
59  &work_query, lwork );
60  if( info != 0 ) {
61  goto exit_level_0;
62  }
63  lwork = LAPACK_C2INT( work_query );
64  /* Allocate memory for work arrays */
65  work = (lapack_complex_float*)
66  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
67  if( work == NULL ) {
69  goto exit_level_0;
70  }
71  /* Call middle-level interface */
72  info = LAPACKE_cgebrd_work( matrix_layout, m, n, a, lda, d, e, tauq, taup,
73  work, 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_cgebrd", info );
79  }
80  return info;
81 }
#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_float
Definition: lapacke.h:74
lapack_int LAPACKE_cgebrd_work(int matrix_layout, lapack_int m, lapack_int n, lapack_complex_float *a, lapack_int lda, float *d, float *e, lapack_complex_float *tauq, lapack_complex_float *taup, lapack_complex_float *work, lapack_int lwork)
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_C2INT(x)
Definition: lapacke.h:116
#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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