LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_chpevd()

lapack_int LAPACKE_chpevd ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_complex_float ap,
float *  w,
lapack_complex_float z,
lapack_int  ldz 
)

Definition at line 35 of file lapacke_chpevd.c.

38{
39 lapack_int info = 0;
40 lapack_int liwork = -1;
41 lapack_int lrwork = -1;
42 lapack_int lwork = -1;
43 lapack_int* iwork = NULL;
44 float* rwork = NULL;
45 lapack_complex_float* work = NULL;
46 lapack_int iwork_query;
47 float rwork_query;
48 lapack_complex_float work_query;
49 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50 LAPACKE_xerbla( "LAPACKE_chpevd", -1 );
51 return -1;
52 }
53#ifndef LAPACK_DISABLE_NAN_CHECK
54 if( LAPACKE_get_nancheck() ) {
55 /* Optionally check input matrices for NaNs */
56 if( LAPACKE_chp_nancheck( n, ap ) ) {
57 return -5;
58 }
59 }
60#endif
61 /* Query optimal working array(s) size */
62 info = LAPACKE_chpevd_work( matrix_layout, jobz, uplo, n, ap, w, z, ldz,
63 &work_query, lwork, &rwork_query, lrwork,
64 &iwork_query, liwork );
65 if( info != 0 ) {
66 goto exit_level_0;
67 }
68 liwork = iwork_query;
69 lrwork = (lapack_int)rwork_query;
70 lwork = LAPACK_C2INT( work_query );
71 /* Allocate memory for work arrays */
72 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
73 if( iwork == NULL ) {
75 goto exit_level_0;
76 }
77 rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
78 if( rwork == NULL ) {
80 goto exit_level_1;
81 }
82 work = (lapack_complex_float*)
83 LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
84 if( work == NULL ) {
86 goto exit_level_2;
87 }
88 /* Call middle-level interface */
89 info = LAPACKE_chpevd_work( matrix_layout, jobz, uplo, n, ap, w, z, ldz,
90 work, lwork, rwork, lrwork, iwork, liwork );
91 /* Release memory and exit */
92 LAPACKE_free( work );
93exit_level_2:
94 LAPACKE_free( rwork );
95exit_level_1:
96 LAPACKE_free( iwork );
97exit_level_0:
98 if( info == LAPACK_WORK_MEMORY_ERROR ) {
99 LAPACKE_xerbla( "LAPACKE_chpevd", info );
100 }
101 return info;
102}
#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
lapack_int LAPACKE_chpevd_work(int matrix_layout, char jobz, char uplo, lapack_int n, lapack_complex_float *ap, 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)
#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_chp_nancheck(lapack_int n, const lapack_complex_float *ap)
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