LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_chegvx()

lapack_int LAPACKE_chegvx ( int  matrix_layout,
lapack_int  itype,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_complex_float *  a,
lapack_int  lda,
lapack_complex_float *  b,
lapack_int  ldb,
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_chegvx.c.

42{
43 lapack_int info = 0;
44 lapack_int lwork = -1;
45 lapack_int* iwork = NULL;
46 float* rwork = NULL;
47 lapack_complex_float* work = NULL;
48 lapack_complex_float work_query;
49 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50 LAPACKE_xerbla( "LAPACKE_chegvx", -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_che_nancheck( matrix_layout, uplo, n, a, lda ) ) {
57 return -7;
58 }
59 if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
60 return -15;
61 }
62 if( LAPACKE_che_nancheck( matrix_layout, uplo, n, b, ldb ) ) {
63 return -9;
64 }
65 if( LAPACKE_lsame( range, 'v' ) ) {
66 if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
67 return -11;
68 }
69 }
70 if( LAPACKE_lsame( range, 'v' ) ) {
71 if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
72 return -12;
73 }
74 }
75 }
76#endif
77 /* Allocate memory for working array(s) */
78 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
79 if( iwork == NULL ) {
80 info = LAPACK_WORK_MEMORY_ERROR;
81 goto exit_level_0;
82 }
83 rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,7*n) );
84 if( rwork == NULL ) {
85 info = LAPACK_WORK_MEMORY_ERROR;
86 goto exit_level_1;
87 }
88 /* Query optimal working array(s) size */
89 info = LAPACKE_chegvx_work( matrix_layout, itype, jobz, range, uplo, n, a,
90 lda, b, ldb, vl, vu, il, iu, abstol, m, w, z,
91 ldz, &work_query, lwork, rwork, iwork, ifail );
92 if( info != 0 ) {
93 goto exit_level_2;
94 }
95 lwork = LAPACK_C2INT( work_query );
96 /* Allocate memory for work arrays */
97 work = (lapack_complex_float*)
98 LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
99 if( work == NULL ) {
100 info = LAPACK_WORK_MEMORY_ERROR;
101 goto exit_level_2;
102 }
103 /* Call middle-level interface */
104 info = LAPACKE_chegvx_work( matrix_layout, itype, jobz, range, uplo, n, a,
105 lda, b, ldb, vl, vu, il, iu, abstol, m, w, z,
106 ldz, work, lwork, rwork, iwork, ifail );
107 /* Release memory and exit */
108 LAPACKE_free( work );
109exit_level_2:
110 LAPACKE_free( rwork );
111exit_level_1:
112 LAPACKE_free( iwork );
113exit_level_0:
114 if( info == LAPACK_WORK_MEMORY_ERROR ) {
115 LAPACKE_xerbla( "LAPACKE_chegvx", info );
116 }
117 return info;
118}
lapack_int
#define lapack_int
Definition: lapack.h:87
lapack_complex_float
#define lapack_complex_float
Definition: lapack.h:46
LAPACK_WORK_MEMORY_ERROR
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACK_C2INT
#define LAPACK_C2INT(x)
Definition: lapacke.h:49
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_chegvx_work
lapack_int LAPACKE_chegvx_work(int matrix_layout, lapack_int itype, char jobz, char range, char uplo, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, 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, lapack_int lwork, float *rwork, lapack_int *iwork, lapack_int *ifail)
Definition: lapacke_chegvx_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_che_nancheck
lapack_logical LAPACKE_che_nancheck(int matrix_layout, char uplo, lapack_int n, const lapack_complex_float *a, lapack_int lda)
Definition: lapacke_che_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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