LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
Loading...
Searching...
No Matches

◆ LAPACKE_zhbgvd()

lapack_int LAPACKE_zhbgvd ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
lapack_complex_double ab,
lapack_int  ldab,
lapack_complex_double bb,
lapack_int  ldbb,
double *  w,
lapack_complex_double z,
lapack_int  ldz 
)

Definition at line 35 of file lapacke_zhbgvd.c.

40{
41 lapack_int info = 0;
42 lapack_int liwork = -1;
43 lapack_int lrwork = -1;
44 lapack_int lwork = -1;
45 lapack_int* iwork = NULL;
46 double* rwork = NULL;
47 lapack_complex_double* work = NULL;
48 lapack_int iwork_query;
49 double rwork_query;
50 lapack_complex_double work_query;
51 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
52 LAPACKE_xerbla( "LAPACKE_zhbgvd", -1 );
53 return -1;
54 }
55#ifndef LAPACK_DISABLE_NAN_CHECK
56 if( LAPACKE_get_nancheck() ) {
57 /* Optionally check input matrices for NaNs */
58 if( LAPACKE_zhb_nancheck( matrix_layout, uplo, n, ka, ab, ldab ) ) {
59 return -7;
60 }
61 if( LAPACKE_zhb_nancheck( matrix_layout, uplo, n, kb, bb, ldbb ) ) {
62 return -9;
63 }
64 }
65#endif
66 /* Query optimal working array(s) size */
67 info = LAPACKE_zhbgvd_work( matrix_layout, jobz, uplo, n, ka, kb, ab, ldab,
68 bb, ldbb, w, z, ldz, &work_query, lwork,
69 &rwork_query, lrwork, &iwork_query, liwork );
70 if( info != 0 ) {
71 goto exit_level_0;
72 }
73 liwork = iwork_query;
74 lrwork = (lapack_int)rwork_query;
75 lwork = LAPACK_Z2INT( work_query );
76 /* Allocate memory for work arrays */
77 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
78 if( iwork == NULL ) {
80 goto exit_level_0;
81 }
82 rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
83 if( rwork == NULL ) {
85 goto exit_level_1;
86 }
87 work = (lapack_complex_double*)
88 LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
89 if( work == NULL ) {
91 goto exit_level_2;
92 }
93 /* Call middle-level interface */
94 info = LAPACKE_zhbgvd_work( matrix_layout, jobz, uplo, n, ka, kb, ab, ldab,
95 bb, ldbb, w, z, ldz, work, lwork, rwork, lrwork,
96 iwork, liwork );
97 /* Release memory and exit */
98 LAPACKE_free( work );
99exit_level_2:
100 LAPACKE_free( rwork );
101exit_level_1:
102 LAPACKE_free( iwork );
103exit_level_0:
104 if( info == LAPACK_WORK_MEMORY_ERROR ) {
105 LAPACKE_xerbla( "LAPACKE_zhbgvd", info );
106 }
107 return info;
108}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_double
Definition: lapack.h:64
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
lapack_int LAPACKE_zhbgvd_work(int matrix_layout, char jobz, char uplo, lapack_int n, lapack_int ka, lapack_int kb, lapack_complex_double *ab, lapack_int ldab, lapack_complex_double *bb, lapack_int ldbb, double *w, lapack_complex_double *z, lapack_int ldz, lapack_complex_double *work, lapack_int lwork, double *rwork, lapack_int lrwork, lapack_int *iwork, lapack_int liwork)
int LAPACKE_get_nancheck(void)
#define LAPACK_Z2INT(x)
Definition: lapacke.h:50
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_zhb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_double *ab, lapack_int ldab)
Here is the call graph for this function: