LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_chpevx()

lapack_int LAPACKE_chpevx ( int  matrix_layout,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
lapack_complex_float ap,
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_chpevx.c.

41 {
42  lapack_int info = 0;
43  lapack_int* iwork = NULL;
44  float* rwork = NULL;
45  lapack_complex_float* work = NULL;
46  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47  LAPACKE_xerbla( "LAPACKE_chpevx", -1 );
48  return -1;
49  }
50 #ifndef LAPACK_DISABLE_NAN_CHECK
51  /* Optionally check input matrices for NaNs */
52  if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
53  return -11;
54  }
55  if( LAPACKE_chp_nancheck( n, ap ) ) {
56  return -6;
57  }
58  if( LAPACKE_lsame( range, 'v' ) ) {
59  if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
60  return -7;
61  }
62  }
63  if( LAPACKE_lsame( range, 'v' ) ) {
64  if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
65  return -8;
66  }
67  }
68 #endif
69  /* Allocate memory for working array(s) */
70  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
71  if( iwork == NULL ) {
73  goto exit_level_0;
74  }
75  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,7*n) );
76  if( rwork == NULL ) {
78  goto exit_level_1;
79  }
80  work = (lapack_complex_float*)
81  LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,2*n) );
82  if( work == NULL ) {
84  goto exit_level_2;
85  }
86  /* Call middle-level interface */
87  info = LAPACKE_chpevx_work( matrix_layout, jobz, range, uplo, n, ap, vl, vu,
88  il, iu, abstol, m, w, z, ldz, work, rwork,
89  iwork, ifail );
90  /* Release memory and exit */
91  LAPACKE_free( work );
92 exit_level_2:
93  LAPACKE_free( rwork );
94 exit_level_1:
95  LAPACKE_free( iwork );
96 exit_level_0:
97  if( info == LAPACK_WORK_MEMORY_ERROR ) {
98  LAPACKE_xerbla( "LAPACKE_chpevx", info );
99  }
100  return info;
101 }
#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_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_chp_nancheck(lapack_int n, const lapack_complex_float *ap)
#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
lapack_int LAPACKE_chpevx_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, lapack_complex_float *ap, 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)
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