LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhpgv_work()

lapack_int LAPACKE_zhpgv_work ( int  matrix_layout,
lapack_int  itype,
char  jobz,
char  uplo,
lapack_int  n,
lapack_complex_double ap,
lapack_complex_double bp,
double *  w,
lapack_complex_double z,
lapack_int  ldz,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_zhpgv_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_zhpgv( &itype, &jobz, &uplo, &n, ap, bp, w, z, &ldz, work, rwork,
47  &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldz_t = MAX(1,n);
53  lapack_complex_double* z_t = NULL;
54  lapack_complex_double* ap_t = NULL;
55  lapack_complex_double* bp_t = NULL;
56  /* Check leading dimension(s) */
57  if( ldz < n ) {
58  info = -10;
59  LAPACKE_xerbla( "LAPACKE_zhpgv_work", info );
60  return info;
61  }
62  /* Allocate memory for temporary array(s) */
63  if( LAPACKE_lsame( jobz, 'v' ) ) {
64  z_t = (lapack_complex_double*)
66  ldz_t * MAX(1,n) );
67  if( z_t == NULL ) {
69  goto exit_level_0;
70  }
71  }
72  ap_t = (lapack_complex_double*)
74  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
75  if( ap_t == NULL ) {
77  goto exit_level_1;
78  }
79  bp_t = (lapack_complex_double*)
81  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
82  if( bp_t == NULL ) {
84  goto exit_level_2;
85  }
86  /* Transpose input matrices */
87  LAPACKE_zhp_trans( matrix_layout, uplo, n, ap, ap_t );
88  LAPACKE_zhp_trans( matrix_layout, uplo, n, bp, bp_t );
89  /* Call LAPACK function and adjust info */
90  LAPACK_zhpgv( &itype, &jobz, &uplo, &n, ap_t, bp_t, w, z_t, &ldz_t,
91  work, rwork, &info );
92  if( info < 0 ) {
93  info = info - 1;
94  }
95  /* Transpose output matrices */
96  if( LAPACKE_lsame( jobz, 'v' ) ) {
97  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
98  }
99  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
100  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, bp_t, bp );
101  /* Release memory and exit */
102  LAPACKE_free( bp_t );
103 exit_level_2:
104  LAPACKE_free( ap_t );
105 exit_level_1:
106  if( LAPACKE_lsame( jobz, 'v' ) ) {
107  LAPACKE_free( z_t );
108  }
109 exit_level_0:
110  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
111  LAPACKE_xerbla( "LAPACKE_zhpgv_work", info );
112  }
113  } else {
114  info = -1;
115  LAPACKE_xerbla( "LAPACKE_zhpgv_work", info );
116  }
117  return info;
118 }
void LAPACK_zhpgv(lapack_int *itype, char *jobz, char *uplo, lapack_int *n, lapack_complex_double *ap, lapack_complex_double *bp, double *w, lapack_complex_double *z, lapack_int *ldz, lapack_complex_double *work, double *rwork, lapack_int *info)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
void LAPACKE_zhp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *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
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
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