LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_chbevd()

lapack_int LAPACKE_chbevd ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_int  kd,
lapack_complex_float ab,
lapack_int  ldab,
float *  w,
lapack_complex_float z,
lapack_int  ldz 
)

Definition at line 35 of file lapacke_chbevd.c.

39{
40 lapack_int info = 0;
41 lapack_int liwork = -1;
42 lapack_int lrwork = -1;
43 lapack_int lwork = -1;
44 lapack_int* iwork = NULL;
45 float* rwork = NULL;
46 lapack_complex_float* work = NULL;
47 lapack_int iwork_query;
48 float rwork_query;
49 lapack_complex_float work_query;
50 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
51 LAPACKE_xerbla( "LAPACKE_chbevd", -1 );
52 return -1;
53 }
54#ifndef LAPACK_DISABLE_NAN_CHECK
55 if( LAPACKE_get_nancheck() ) {
56 /* Optionally check input matrices for NaNs */
57 if( LAPACKE_chb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
58 return -6;
59 }
60 }
61#endif
62 /* Query optimal working array(s) size */
63 info = LAPACKE_chbevd_work( matrix_layout, jobz, uplo, n, kd, ab, ldab, w, z,
64 ldz, &work_query, lwork, &rwork_query, lrwork,
65 &iwork_query, liwork );
66 if( info != 0 ) {
67 goto exit_level_0;
68 }
69 liwork = iwork_query;
70 lrwork = (lapack_int)rwork_query;
71 lwork = LAPACK_C2INT( work_query );
72 /* Allocate memory for work arrays */
73 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
74 if( iwork == NULL ) {
76 goto exit_level_0;
77 }
78 rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
79 if( rwork == NULL ) {
81 goto exit_level_1;
82 }
83 work = (lapack_complex_float*)
84 LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
85 if( work == NULL ) {
87 goto exit_level_2;
88 }
89 /* Call middle-level interface */
90 info = LAPACKE_chbevd_work( matrix_layout, jobz, uplo, n, kd, ab, ldab, w, z,
91 ldz, work, lwork, rwork, lrwork, iwork,
92 liwork );
93 /* Release memory and exit */
94 LAPACKE_free( work );
95exit_level_2:
96 LAPACKE_free( rwork );
97exit_level_1:
98 LAPACKE_free( iwork );
99exit_level_0:
100 if( info == LAPACK_WORK_MEMORY_ERROR ) {
101 LAPACKE_xerbla( "LAPACKE_chbevd", info );
102 }
103 return info;
104}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_float
Definition: lapack.h:46
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#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
lapack_int LAPACKE_chbevd_work(int matrix_layout, char jobz, char uplo, lapack_int n, lapack_int kd, lapack_complex_float *ab, lapack_int ldab, float *w, lapack_complex_float *z, lapack_int ldz, lapack_complex_float *work, lapack_int lwork, float *rwork, lapack_int lrwork, lapack_int *iwork, lapack_int liwork)
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_chb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_float *ab, lapack_int ldab)
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