LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zunghr_work()

lapack_int LAPACKE_zunghr_work ( int  matrix_layout,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
lapack_complex_double a,
lapack_int  lda,
const lapack_complex_double tau,
lapack_complex_double work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_zunghr_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_zunghr( &n, &ilo, &ihi, a, &lda, tau, work, &lwork, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int lda_t = MAX(1,n);
51  lapack_complex_double* a_t = NULL;
52  /* Check leading dimension(s) */
53  if( lda < n ) {
54  info = -6;
55  LAPACKE_xerbla( "LAPACKE_zunghr_work", info );
56  return info;
57  }
58  /* Query optimal working array(s) size if requested */
59  if( lwork == -1 ) {
60  LAPACK_zunghr( &n, &ilo, &ihi, a, &lda_t, tau, work, &lwork,
61  &info );
62  return (info < 0) ? (info - 1) : info;
63  }
64  /* Allocate memory for temporary array(s) */
65  a_t = (lapack_complex_double*)
66  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
67  if( a_t == NULL ) {
69  goto exit_level_0;
70  }
71  /* Transpose input matrices */
72  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
73  /* Call LAPACK function and adjust info */
74  LAPACK_zunghr( &n, &ilo, &ihi, a_t, &lda_t, tau, work, &lwork, &info );
75  if( info < 0 ) {
76  info = info - 1;
77  }
78  /* Transpose output matrices */
79  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
80  /* Release memory and exit */
81  LAPACKE_free( a_t );
82 exit_level_0:
83  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
84  LAPACKE_xerbla( "LAPACKE_zunghr_work", info );
85  }
86  } else {
87  info = -1;
88  LAPACKE_xerbla( "LAPACKE_zunghr_work", info );
89  }
90  return info;
91 }
#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 LAPACK_zunghr(lapack_int *n, lapack_int *ilo, lapack_int *ihi, lapack_complex_double *a, lapack_int *lda, const lapack_complex_double *tau, lapack_complex_double *work, lapack_int *lwork, lapack_int *info)
#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)
Here is the call graph for this function:
Here is the caller graph for this function: