LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ 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 36 of file lapacke_zhbevx.c.

44 {
45  lapack_int info = 0;
46  lapack_int* iwork = NULL;
47  double* rwork = NULL;
48  lapack_complex_double* work = NULL;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_zhbevx", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
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 #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 = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,7*n) );
79  if( rwork == NULL ) {
81  goto exit_level_1;
82  }
83  work = (lapack_complex_double*)
84  LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,n) );
85  if( work == NULL ) {
87  goto exit_level_2;
88  }
89  /* Call middle-level interface */
90  info = LAPACKE_zhbevx_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 );
95 exit_level_2:
96  LAPACKE_free( rwork );
97 exit_level_1:
98  LAPACKE_free( iwork );
99 exit_level_0:
100  if( info == LAPACK_WORK_MEMORY_ERROR ) {
101  LAPACKE_xerbla( "LAPACKE_zhbevx", info );
102  }
103  return info;
104 }
#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_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_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)
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
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