LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhbgvx()

lapack_int LAPACKE_zhbgvx ( int  matrix_layout,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_int  ka,
lapack_int  kb,
lapack_complex_double ab,
lapack_int  ldab,
lapack_complex_double bb,
lapack_int  ldbb,
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 36 of file lapacke_zhbgvx.c.

45 {
46  lapack_int info = 0;
47  lapack_int* iwork = NULL;
48  double* rwork = NULL;
49  lapack_complex_double* work = NULL;
50  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
51  LAPACKE_xerbla( "LAPACKE_zhbgvx", -1 );
52  return -1;
53  }
54 #ifndef LAPACK_DISABLE_NAN_CHECK
55  if( LAPACKE_get_nancheck() ) {
56  /* Optionally check input matrices for NaNs */
57  if( LAPACKE_zhb_nancheck( matrix_layout, uplo, n, ka, ab, ldab ) ) {
58  return -8;
59  }
60  if( LAPACKE_d_nancheck( 1, &abstol, 1 ) ) {
61  return -18;
62  }
63  if( LAPACKE_zhb_nancheck( matrix_layout, uplo, n, kb, bb, ldbb ) ) {
64  return -10;
65  }
66  if( LAPACKE_lsame( range, 'v' ) ) {
67  if( LAPACKE_d_nancheck( 1, &vl, 1 ) ) {
68  return -14;
69  }
70  }
71  if( LAPACKE_lsame( range, 'v' ) ) {
72  if( LAPACKE_d_nancheck( 1, &vu, 1 ) ) {
73  return -15;
74  }
75  }
76  }
77 #endif
78  /* Allocate memory for working array(s) */
79  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
80  if( iwork == NULL ) {
82  goto exit_level_0;
83  }
84  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,7*n) );
85  if( rwork == NULL ) {
87  goto exit_level_1;
88  }
89  work = (lapack_complex_double*)
90  LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,n) );
91  if( work == NULL ) {
93  goto exit_level_2;
94  }
95  /* Call middle-level interface */
96  info = LAPACKE_zhbgvx_work( matrix_layout, jobz, range, uplo, n, ka, kb, ab,
97  ldab, bb, ldbb, q, ldq, vl, vu, il, iu, abstol,
98  m, w, z, ldz, work, rwork, iwork, ifail );
99  /* Release memory and exit */
100  LAPACKE_free( work );
101 exit_level_2:
102  LAPACKE_free( rwork );
103 exit_level_1:
104  LAPACKE_free( iwork );
105 exit_level_0:
106  if( info == LAPACK_WORK_MEMORY_ERROR ) {
107  LAPACKE_xerbla( "LAPACKE_zhbgvx", info );
108  }
109  return info;
110 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
lapack_int LAPACKE_zhbgvx_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, lapack_int ka, lapack_int kb, lapack_complex_double *ab, lapack_int ldab, lapack_complex_double *bb, lapack_int ldbb, 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)
lapack_logical LAPACKE_zhb_nancheck(int matrix_layout, char uplo, lapack_int n, lapack_int kd, const lapack_complex_double *ab, lapack_int ldab)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
int LAPACKE_get_nancheck()
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