LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ 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 35 of file lapacke_cgebrd.c.

39{
40 lapack_int info = 0;
41 lapack_int lwork = -1;
42 lapack_complex_float* work = NULL;
43 lapack_complex_float work_query;
44 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45 LAPACKE_xerbla( "LAPACKE_cgebrd", -1 );
46 return -1;
47 }
48#ifndef LAPACK_DISABLE_NAN_CHECK
49 if( LAPACKE_get_nancheck() ) {
50 /* Optionally check input matrices for NaNs */
51 if( LAPACKE_cge_nancheck( matrix_layout, m, n, a, lda ) ) {
52 return -4;
53 }
54 }
55#endif
56 /* Query optimal working array(s) size */
57 info = LAPACKE_cgebrd_work( matrix_layout, m, n, a, lda, d, e, tauq, taup,
58 &work_query, lwork );
59 if( info != 0 ) {
60 goto exit_level_0;
61 }
62 lwork = LAPACK_C2INT( work_query );
63 /* Allocate memory for work arrays */
64 work = (lapack_complex_float*)
65 LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
66 if( work == NULL ) {
68 goto exit_level_0;
69 }
70 /* Call middle-level interface */
71 info = LAPACKE_cgebrd_work( matrix_layout, m, n, a, lda, d, e, tauq, taup,
72 work, lwork );
73 /* Release memory and exit */
74 LAPACKE_free( work );
75exit_level_0:
76 if( info == LAPACK_WORK_MEMORY_ERROR ) {
77 LAPACKE_xerbla( "LAPACKE_cgebrd", info );
78 }
79 return info;
80}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_float
Definition: lapack.h:46
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
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)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_C2INT(x)
Definition: lapacke.h:49
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
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