LAPACK  3.10.1
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 35 of file lapacke_chpevx.c.

40 {
41  lapack_int info = 0;
42  lapack_int* iwork = NULL;
43  float* rwork = NULL;
44  lapack_complex_float* work = NULL;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_chpevx", -1 );
47  return -1;
48  }
49 #ifndef LAPACK_DISABLE_NAN_CHECK
50  if( LAPACKE_get_nancheck() ) {
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  }
69 #endif
70  /* Allocate memory for working array(s) */
71  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
72  if( iwork == NULL ) {
74  goto exit_level_0;
75  }
76  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,7*n) );
77  if( rwork == NULL ) {
79  goto exit_level_1;
80  }
81  work = (lapack_complex_float*)
82  LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,2*n) );
83  if( work == NULL ) {
85  goto exit_level_2;
86  }
87  /* Call middle-level interface */
88  info = LAPACKE_chpevx_work( matrix_layout, jobz, range, uplo, n, ap, vl, vu,
89  il, iu, abstol, m, w, z, ldz, work, rwork,
90  iwork, ifail );
91  /* Release memory and exit */
92  LAPACKE_free( work );
93 exit_level_2:
94  LAPACKE_free( rwork );
95 exit_level_1:
96  LAPACKE_free( iwork );
97 exit_level_0:
98  if( info == LAPACK_WORK_MEMORY_ERROR ) {
99  LAPACKE_xerbla( "LAPACKE_chpevx", info );
100  }
101  return info;
102 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
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)
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_chp_nancheck(lapack_int n, const lapack_complex_float *ap)
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