LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dspevx()

lapack_int LAPACKE_dspevx ( int  matrix_layout,
char  jobz,
char  range,
char  uplo,
lapack_int  n,
double *  ap,
double  vl,
double  vu,
lapack_int  il,
lapack_int  iu,
double  abstol,
lapack_int m,
double *  w,
double *  z,
lapack_int  ldz,
lapack_int ifail 
)

Definition at line 36 of file lapacke_dspevx.c.

41 {
42  lapack_int info = 0;
43  lapack_int* iwork = NULL;
44  double* work = NULL;
45  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46  LAPACKE_xerbla( "LAPACKE_dspevx", -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_d_nancheck( 1, &abstol, 1 ) ) {
53  return -11;
54  }
55  if( LAPACKE_dsp_nancheck( n, ap ) ) {
56  return -6;
57  }
58  if( LAPACKE_lsame( range, 'v' ) ) {
59  if( LAPACKE_d_nancheck( 1, &vl, 1 ) ) {
60  return -7;
61  }
62  }
63  if( LAPACKE_lsame( range, 'v' ) ) {
64  if( LAPACKE_d_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  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,8*n) );
77  if( work == NULL ) {
79  goto exit_level_1;
80  }
81  /* Call middle-level interface */
82  info = LAPACKE_dspevx_work( matrix_layout, jobz, range, uplo, n, ap, vl, vu,
83  il, iu, abstol, m, w, z, ldz, work, iwork,
84  ifail );
85  /* Release memory and exit */
86  LAPACKE_free( work );
87 exit_level_1:
88  LAPACKE_free( iwork );
89 exit_level_0:
90  if( info == LAPACK_WORK_MEMORY_ERROR ) {
91  LAPACKE_xerbla( "LAPACKE_dspevx", info );
92  }
93  return info;
94 }
lapack_int LAPACKE_dspevx_work(int matrix_layout, char jobz, char range, char uplo, lapack_int n, double *ap, double vl, double vu, lapack_int il, lapack_int iu, double abstol, lapack_int *m, double *w, double *z, lapack_int ldz, double *work, lapack_int *iwork, lapack_int *ifail)
#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 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)
lapack_logical LAPACKE_dsp_nancheck(lapack_int n, const double *ap)
#define lapack_int
Definition: lapacke.h:47
int LAPACKE_get_nancheck()
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