LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zunmbr()

lapack_int LAPACKE_zunmbr ( int  matrix_layout,
char  vect,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
const lapack_complex_double a,
lapack_int  lda,
const lapack_complex_double tau,
lapack_complex_double c,
lapack_int  ldc 
)

Definition at line 36 of file lapacke_zunmbr.c.

41 {
42  lapack_int info = 0;
43  lapack_int lwork = -1;
44  lapack_complex_double* work = NULL;
45  lapack_complex_double work_query;
46  lapack_int nq, r;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_zunmbr", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  /* Optionally check input matrices for NaNs */
53  nq = LAPACKE_lsame( side, 'l' ) ? m : n;
54  r = LAPACKE_lsame( vect, 'q' ) ? nq : MIN(nq,k);
55  if( LAPACKE_zge_nancheck( matrix_layout, r, MIN(nq,k), a, lda ) ) {
56  return -8;
57  }
58  if( LAPACKE_zge_nancheck( matrix_layout, m, n, c, ldc ) ) {
59  return -11;
60  }
61  if( LAPACKE_z_nancheck( MIN(nq,k), tau, 1 ) ) {
62  return -10;
63  }
64 #endif
65  /* Query optimal working array(s) size */
66  info = LAPACKE_zunmbr_work( matrix_layout, vect, side, trans, m, n, k, a,
67  lda, tau, c, ldc, &work_query, lwork );
68  if( info != 0 ) {
69  goto exit_level_0;
70  }
71  lwork = LAPACK_Z2INT( work_query );
72  /* Allocate memory for work arrays */
73  work = (lapack_complex_double*)
74  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
75  if( work == NULL ) {
77  goto exit_level_0;
78  }
79  /* Call middle-level interface */
80  info = LAPACKE_zunmbr_work( matrix_layout, vect, side, trans, m, n, k, a,
81  lda, tau, c, ldc, work, lwork );
82  /* Release memory and exit */
83  LAPACKE_free( work );
84 exit_level_0:
85  if( info == LAPACK_WORK_MEMORY_ERROR ) {
86  LAPACKE_xerbla( "LAPACKE_zunmbr", info );
87  }
88  return info;
89 }
#define LAPACK_Z2INT(x)
Definition: lapacke.h:117
lapack_logical LAPACKE_z_nancheck(lapack_int n, const lapack_complex_double *x, lapack_int incx)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_int LAPACKE_zunmbr_work(int matrix_layout, char vect, char side, char trans, lapack_int m, lapack_int n, lapack_int k, const lapack_complex_double *a, lapack_int lda, const lapack_complex_double *tau, lapack_complex_double *c, lapack_int ldc, lapack_complex_double *work, lapack_int lwork)
#define lapack_complex_double
Definition: lapacke.h:90
#define MIN(x, y)
Definition: lapacke_utils.h:50
#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
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
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