LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ 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 36 of file lapacke_chbevx.c.

43 {
44  lapack_int info = 0;
45  lapack_int* iwork = NULL;
46  float* rwork = NULL;
47  lapack_complex_float* work = NULL;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_chbevx", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
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 #endif
71  /* Allocate memory for working array(s) */
72  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
73  if( iwork == NULL ) {
75  goto exit_level_0;
76  }
77  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,7*n) );
78  if( rwork == NULL ) {
80  goto exit_level_1;
81  }
82  work = (lapack_complex_float*)
83  LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,n) );
84  if( work == NULL ) {
86  goto exit_level_2;
87  }
88  /* Call middle-level interface */
89  info = LAPACKE_chbevx_work( matrix_layout, jobz, range, uplo, n, kd, ab,
90  ldab, q, ldq, vl, vu, il, iu, abstol, m, w, z,
91  ldz, work, rwork, iwork, ifail );
92  /* Release memory and exit */
93  LAPACKE_free( work );
94 exit_level_2:
95  LAPACKE_free( rwork );
96 exit_level_1:
97  LAPACKE_free( iwork );
98 exit_level_0:
99  if( info == LAPACK_WORK_MEMORY_ERROR ) {
100  LAPACKE_xerbla( "LAPACKE_chbevx", info );
101  }
102  return info;
103 }
#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_float
Definition: lapacke.h:74
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)
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:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
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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