LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_chbevx()

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

Definition at line 35 of file lapacke_chbevx.c.

42{
43 lapack_int info = 0;
44 lapack_int* iwork = NULL;
45 float* rwork = NULL;
46 lapack_complex_float* work = NULL;
47 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48 LAPACKE_xerbla( "LAPACKE_chbevx", -1 );
49 return -1;
50 }
51#ifndef LAPACK_DISABLE_NAN_CHECK
52 if( LAPACKE_get_nancheck() ) {
53 /* Optionally check input matrices for NaNs */
54 if( LAPACKE_chb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
55 return -7;
56 }
57 if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
58 return -15;
59 }
60 if( LAPACKE_lsame( range, 'v' ) ) {
61 if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
62 return -11;
63 }
64 }
65 if( LAPACKE_lsame( range, 'v' ) ) {
66 if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
67 return -12;
68 }
69 }
70 }
71#endif
72 /* Allocate memory for working array(s) */
73 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
74 if( iwork == NULL ) {
76 goto exit_level_0;
77 }
78 rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,7*n) );
79 if( rwork == NULL ) {
81 goto exit_level_1;
82 }
83 work = (lapack_complex_float*)
84 LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,n) );
85 if( work == NULL ) {
87 goto exit_level_2;
88 }
89 /* Call middle-level interface */
90 info = LAPACKE_chbevx_work( matrix_layout, jobz, range, uplo, n, kd, ab,
91 ldab, q, ldq, vl, vu, il, iu, abstol, m, w, z,
92 ldz, work, rwork, iwork, ifail );
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_chbevx", 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
lapack_int LAPACKE_chbevx_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, lapack_int kd, lapack_complex_float *ab, lapack_int ldab, lapack_complex_float *q, lapack_int ldq, float vl, float vu, lapack_int il, lapack_int iu, float abstol, lapack_int *m, float *w, lapack_complex_float *z, lapack_int ldz, lapack_complex_float *work, float *rwork, lapack_int *iwork, lapack_int *ifail)
#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_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
lapack_logical LAPACKE_chb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_float *ab, lapack_int ldab)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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