LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_ssbgvx()

lapack_int LAPACKE_ssbgvx ( int  matrix_layout,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
float *  ab,
lapack_int  ldab,
float *  bb,
lapack_int  ldbb,
float *  q,
lapack_int  ldq,
float  vl,
float  vu,
lapack_int  il,
lapack_int  iu,
float  abstol,
lapack_int *  m,
float *  w,
float *  z,
lapack_int  ldz,
lapack_int *  ifail 
)

Definition at line 35 of file lapacke_ssbgvx.c.

42{
43 lapack_int info = 0;
44 lapack_int* iwork = NULL;
45 float* work = NULL;
46 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47 LAPACKE_xerbla( "LAPACKE_ssbgvx", -1 );
48 return -1;
49 }
50#ifndef LAPACK_DISABLE_NAN_CHECK
51 if( LAPACKE_get_nancheck() ) {
52 /* Optionally check input matrices for NaNs */
53 if( LAPACKE_ssb_nancheck( matrix_layout, uplo, n, ka, ab, ldab ) ) {
54 return -8;
55 }
56 if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
57 return -18;
58 }
59 if( LAPACKE_ssb_nancheck( matrix_layout, uplo, n, kb, bb, ldbb ) ) {
60 return -10;
61 }
62 if( LAPACKE_lsame( range, 'v' ) ) {
63 if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
64 return -14;
65 }
66 }
67 if( LAPACKE_lsame( range, 'v' ) ) {
68 if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
69 return -15;
70 }
71 }
72 }
73#endif
74 /* Allocate memory for working array(s) */
75 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
76 if( iwork == NULL ) {
77 info = LAPACK_WORK_MEMORY_ERROR;
78 goto exit_level_0;
79 }
80 work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,7*n) );
81 if( work == NULL ) {
82 info = LAPACK_WORK_MEMORY_ERROR;
83 goto exit_level_1;
84 }
85 /* Call middle-level interface */
86 info = LAPACKE_ssbgvx_work( matrix_layout, jobz, range, uplo, n, ka, kb, ab,
87 ldab, bb, ldbb, q, ldq, vl, vu, il, iu, abstol,
88 m, w, z, ldz, work, iwork, ifail );
89 /* Release memory and exit */
90 LAPACKE_free( work );
91exit_level_1:
92 LAPACKE_free( iwork );
93exit_level_0:
94 if( info == LAPACK_WORK_MEMORY_ERROR ) {
95 LAPACKE_xerbla( "LAPACKE_ssbgvx", info );
96 }
97 return info;
98}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_WORK_MEMORY_ERROR
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_ssbgvx_work
lapack_int LAPACKE_ssbgvx_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, lapack_int ka, lapack_int kb, float *ab, lapack_int ldab, float *bb, lapack_int ldbb, float *q, lapack_int ldq, float vl, float vu, lapack_int il, lapack_int iu, float abstol, lapack_int *m, float *w, float *z, lapack_int ldz, float *work, lapack_int *iwork, lapack_int *ifail)
Definition: lapacke_ssbgvx_work.c:35
LAPACKE_get_nancheck
int LAPACKE_get_nancheck(void)
Definition: lapacke_nancheck.c:42
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
LAPACKE_ssb_nancheck
lapack_logical LAPACKE_ssb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const float *ab, lapack_int ldab)
Definition: lapacke_ssb_nancheck.c:36
LAPACKE_s_nancheck
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
Definition: lapacke_s_nancheck.c:36
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
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