LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_chpev()

lapack_int LAPACKE_chpev ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_complex_float ap,
float *  w,
lapack_complex_float z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_chpev.c.

39 {
40  lapack_int info = 0;
41  float* rwork = NULL;
42  lapack_complex_float* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_chpev", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  /* Optionally check input matrices for NaNs */
49  if( LAPACKE_chp_nancheck( n, ap ) ) {
50  return -5;
51  }
52 #endif
53  /* Allocate memory for working array(s) */
54  rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n-2) );
55  if( rwork == NULL ) {
57  goto exit_level_0;
58  }
59  work = (lapack_complex_float*)
60  LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,2*n-1) );
61  if( work == NULL ) {
63  goto exit_level_1;
64  }
65  /* Call middle-level interface */
66  info = LAPACKE_chpev_work( matrix_layout, jobz, uplo, n, ap, w, z, ldz, work,
67  rwork );
68  /* Release memory and exit */
69  LAPACKE_free( work );
70 exit_level_1:
71  LAPACKE_free( rwork );
72 exit_level_0:
73  if( info == LAPACK_WORK_MEMORY_ERROR ) {
74  LAPACKE_xerbla( "LAPACKE_chpev", info );
75  }
76  return info;
77 }
#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
#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_int LAPACKE_chpev_work(int matrix_layout, char jobz, char uplo, lapack_int n, lapack_complex_float *ap, float *w, lapack_complex_float *z, lapack_int ldz, lapack_complex_float *work, float *rwork)
#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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