LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zhpgvd_work()

lapack_int LAPACKE_zhpgvd_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,
lapack_int  lwork,
double *  rwork,
lapack_int  lrwork,
lapack_int iwork,
lapack_int  liwork 
)

Definition at line 36 of file lapacke_zhpgvd_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_zhpgvd( &itype, &jobz, &uplo, &n, ap, bp, w, z, &ldz, work,
49  &lwork, rwork, &lrwork, iwork, &liwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int ldz_t = MAX(1,n);
55  lapack_complex_double* z_t = NULL;
56  lapack_complex_double* ap_t = NULL;
57  lapack_complex_double* bp_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldz < n ) {
60  info = -10;
61  LAPACKE_xerbla( "LAPACKE_zhpgvd_work", info );
62  return info;
63  }
64  /* Query optimal working array(s) size if requested */
65  if( liwork == -1 || lrwork == -1 || lwork == -1 ) {
66  LAPACK_zhpgvd( &itype, &jobz, &uplo, &n, ap, bp, w, z, &ldz_t, work,
67  &lwork, rwork, &lrwork, iwork, &liwork, &info );
68  return (info < 0) ? (info - 1) : info;
69  }
70  /* Allocate memory for temporary array(s) */
71  if( LAPACKE_lsame( jobz, 'v' ) ) {
72  z_t = (lapack_complex_double*)
74  ldz_t * MAX(1,n) );
75  if( z_t == NULL ) {
77  goto exit_level_0;
78  }
79  }
80  ap_t = (lapack_complex_double*)
82  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
83  if( ap_t == NULL ) {
85  goto exit_level_1;
86  }
87  bp_t = (lapack_complex_double*)
89  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
90  if( bp_t == NULL ) {
92  goto exit_level_2;
93  }
94  /* Transpose input matrices */
95  LAPACKE_zhp_trans( matrix_layout, uplo, n, ap, ap_t );
96  LAPACKE_zhp_trans( matrix_layout, uplo, n, bp, bp_t );
97  /* Call LAPACK function and adjust info */
98  LAPACK_zhpgvd( &itype, &jobz, &uplo, &n, ap_t, bp_t, w, z_t, &ldz_t,
99  work, &lwork, rwork, &lrwork, iwork, &liwork, &info );
100  if( info < 0 ) {
101  info = info - 1;
102  }
103  /* Transpose output matrices */
104  if( LAPACKE_lsame( jobz, 'v' ) ) {
105  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
106  }
107  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, ap_t, ap );
108  LAPACKE_zhp_trans( LAPACK_COL_MAJOR, uplo, n, bp_t, bp );
109  /* Release memory and exit */
110  LAPACKE_free( bp_t );
111 exit_level_2:
112  LAPACKE_free( ap_t );
113 exit_level_1:
114  if( LAPACKE_lsame( jobz, 'v' ) ) {
115  LAPACKE_free( z_t );
116  }
117 exit_level_0:
118  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
119  LAPACKE_xerbla( "LAPACKE_zhpgvd_work", info );
120  }
121  } else {
122  info = -1;
123  LAPACKE_xerbla( "LAPACKE_zhpgvd_work", info );
124  }
125  return info;
126 }
void LAPACK_zhpgvd(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, lapack_int *lwork, double *rwork, lapack_int *lrwork, lapack_int *iwork, lapack_int *liwork, 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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