LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_chpev_work()

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 
)

Definition at line 36 of file lapacke_chpev_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_chpev( &jobz, &uplo, &n, ap, w, z, &ldz, work, rwork, &info );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int ldz_t = MAX(1,n);
50  lapack_complex_float* z_t = NULL;
51  lapack_complex_float* ap_t = NULL;
52  /* Check leading dimension(s) */
53  if( ldz < n ) {
54  info = -8;
55  LAPACKE_xerbla( "LAPACKE_chpev_work", info );
56  return info;
57  }
58  /* Allocate memory for temporary array(s) */
59  if( LAPACKE_lsame( jobz, 'v' ) ) {
60  z_t = (lapack_complex_float*)
62  ldz_t * MAX(1,n) );
63  if( z_t == NULL ) {
65  goto exit_level_0;
66  }
67  }
68  ap_t = (lapack_complex_float*)
70  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
71  if( ap_t == NULL ) {
73  goto exit_level_1;
74  }
75  /* Transpose input matrices */
76  LAPACKE_chp_trans( matrix_layout, uplo, n, ap, ap_t );
77  /* Call LAPACK function and adjust info */
78  LAPACK_chpev( &jobz, &uplo, &n, ap_t, w, z_t, &ldz_t, work, rwork,
79  &info );
80  if( info < 0 ) {
81  info = info - 1;
82  }
83  /* Transpose output matrices */
84  if( LAPACKE_lsame( jobz, 'v' ) ) {
85  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
86  }
87  LAPACKE_chp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
88  /* Release memory and exit */
89  LAPACKE_free( ap_t );
90 exit_level_1:
91  if( LAPACKE_lsame( jobz, 'v' ) ) {
92  LAPACKE_free( z_t );
93  }
94 exit_level_0:
95  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
96  LAPACKE_xerbla( "LAPACKE_chpev_work", info );
97  }
98  } else {
99  info = -1;
100  LAPACKE_xerbla( "LAPACKE_chpev_work", info );
101  }
102  return info;
103 }
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
void LAPACK_chpev(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, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
void LAPACKE_chp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_float *in, lapack_complex_float *out)
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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