LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zhbevx()

lapack_int LAPACKE_zhbevx ( int  matrix_layout,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_int  kd,
lapack_complex_double ab,
lapack_int  ldab,
lapack_complex_double q,
lapack_int  ldq,
double  vl,
double  vu,
lapack_int  il,
lapack_int  iu,
double  abstol,
lapack_int m,
double *  w,
lapack_complex_double z,
lapack_int  ldz,
lapack_int ifail 
)

Definition at line 35 of file lapacke_zhbevx.c.

43{
44 lapack_int info = 0;
45 lapack_int* iwork = NULL;
46 double* rwork = NULL;
47 lapack_complex_double* work = NULL;
48 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49 LAPACKE_xerbla( "LAPACKE_zhbevx", -1 );
50 return -1;
51 }
52#ifndef LAPACK_DISABLE_NAN_CHECK
53 if( LAPACKE_get_nancheck() ) {
54 /* Optionally check input matrices for NaNs */
55 if( LAPACKE_zhb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
56 return -7;
57 }
58 if( LAPACKE_d_nancheck( 1, &abstol, 1 ) ) {
59 return -15;
60 }
61 if( LAPACKE_lsame( range, 'v' ) ) {
62 if( LAPACKE_d_nancheck( 1, &vl, 1 ) ) {
63 return -11;
64 }
65 }
66 if( LAPACKE_lsame( range, 'v' ) ) {
67 if( LAPACKE_d_nancheck( 1, &vu, 1 ) ) {
68 return -12;
69 }
70 }
71 }
72#endif
73 /* Allocate memory for working array(s) */
74 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
75 if( iwork == NULL ) {
77 goto exit_level_0;
78 }
79 rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,7*n) );
80 if( rwork == NULL ) {
82 goto exit_level_1;
83 }
84 work = (lapack_complex_double*)
86 if( work == NULL ) {
88 goto exit_level_2;
89 }
90 /* Call middle-level interface */
91 info = LAPACKE_zhbevx_work( matrix_layout, jobz, range, uplo, n, kd, ab,
92 ldab, q, ldq, vl, vu, il, iu, abstol, m, w, z,
93 ldz, work, rwork, iwork, ifail );
94 /* Release memory and exit */
95 LAPACKE_free( work );
96exit_level_2:
97 LAPACKE_free( rwork );
98exit_level_1:
99 LAPACKE_free( iwork );
100exit_level_0:
101 if( info == LAPACK_WORK_MEMORY_ERROR ) {
102 LAPACKE_xerbla( "LAPACKE_zhbevx", info );
103 }
104 return info;
105}
#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
lapack_int LAPACKE_zhbevx_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, lapack_int kd, lapack_complex_double *ab, lapack_int ldab, lapack_complex_double *q, lapack_int ldq, double vl, double vu, lapack_int il, lapack_int iu, double abstol, lapack_int *m, double *w, lapack_complex_double *z, lapack_int ldz, lapack_complex_double *work, double *rwork, lapack_int *iwork, lapack_int *ifail)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
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)
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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