LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zheevd_2stage_work()

lapack_int LAPACKE_zheevd_2stage_work ( int  matrix_layout,
char  jobz,
char  uplo,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
double *  w,
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_zheevd_2stage_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_zheevd_2stage( &jobz, &uplo, &n, a, &lda, w, work, &lwork, rwork,
47  &lrwork, iwork, &liwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int lda_t = MAX(1,n);
53  lapack_complex_double* a_t = NULL;
54  /* Check leading dimension(s) */
55  if( lda < n ) {
56  info = -6;
57  LAPACKE_xerbla( "LAPACKE_zheevd_2stage_work", info );
58  return info;
59  }
60  /* Query optimal working array(s) size if requested */
61  if( liwork == -1 || lrwork == -1 || lwork == -1 ) {
62  LAPACK_zheevd_2stage( &jobz, &uplo, &n, a, &lda_t, w, work, &lwork, rwork,
63  &lrwork, iwork, &liwork, &info );
64  return (info < 0) ? (info - 1) : info;
65  }
66  /* Allocate memory for temporary array(s) */
67  a_t = (lapack_complex_double*)
68  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
69  if( a_t == NULL ) {
71  goto exit_level_0;
72  }
73  /* Transpose input matrices */
74  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
75  /* Call LAPACK function and adjust info */
76  LAPACK_zheevd_2stage( &jobz, &uplo, &n, a_t, &lda_t, w, work, &lwork, rwork,
77  &lrwork, iwork, &liwork, &info );
78  if( info < 0 ) {
79  info = info - 1;
80  }
81  /* Transpose output matrices */
82  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
83  /* Release memory and exit */
84  LAPACKE_free( a_t );
85 exit_level_0:
86  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
87  LAPACKE_xerbla( "LAPACKE_zheevd_2stage_work", info );
88  }
89  } else {
90  info = -1;
91  LAPACKE_xerbla( "LAPACKE_zheevd_2stage_work", info );
92  }
93  return info;
94 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#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)
void LAPACK_zheevd_2stage(char *jobz, char *uplo, lapack_int *n, lapack_complex_double *a, lapack_int *lda, double *w, lapack_complex_double *work, lapack_int *lwork, double *rwork, lapack_int *lrwork, lapack_int *iwork, lapack_int *liwork, lapack_int *info)
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