LAPACK  3.8.0
LAPACK: Linear Algebra PACKage
lapacke_zgemqr_work.c
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function zgemqr
30 * Author: Intel Corporation
31 * Generated December 2016
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_zgemqr_work( int matrix_layout, char side, char trans,
38  const lapack_complex_double* a, lapack_int lda,
39  const lapack_complex_double* t, lapack_int tsize,
41  lapack_complex_double* work, lapack_int lwork )
42 {
43  lapack_int info = 0;
44  lapack_int r;
45  lapack_int lda_t, ldc_t;
46  lapack_complex_double *a_t = NULL, *c_t = NULL;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zgemqr( &side, &trans, &m, &n, &k, a, &lda, t, &tsize, c, &ldc,
50  work, &lwork, &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  r = LAPACKE_lsame( side, 'l' ) ? m : n;
56  lda_t = MAX(1,r);
57  ldc_t = MAX(1,m);
58  /* Check leading dimension(s) */
59  if( lda < k ) {
60  info = -8;
61  LAPACKE_xerbla( "LAPACKE_zgemqr_work", info );
62  return info;
63  }
64  if( ldc < n ) {
65  info = -11;
66  LAPACKE_xerbla( "LAPACKE_zgemqr_work", info );
67  return info;
68  }
69  /* Query optimal working array(s) size if requested */
70  if( lwork == -1 ) {
71  LAPACK_zgemqr( &side, &trans, &m, &n, &k, a, &lda_t, t, &tsize,
72  c, &ldc_t, work, &lwork, &info );
73  return (info < 0) ? (info - 1) : info;
74  }
75  /* Allocate memory for temporary array(s) */
76  a_t = (lapack_complex_double*)
77  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,k) );
78  if( a_t == NULL ) {
80  goto exit_level_0;
81  }
82  c_t = (lapack_complex_double*)
83  LAPACKE_malloc( sizeof(lapack_complex_double) * ldc_t * MAX(1,n) );
84  if( c_t == NULL ) {
86  goto exit_level_1;
87  }
88  /* Transpose input matrices */
89  LAPACKE_zge_trans( matrix_layout, r, k, a, lda, a_t, lda_t );
90  LAPACKE_zge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
91  /* Call LAPACK function and adjust info */
92  LAPACK_zgemqr( &side, &trans, &m, &n, &k, a_t, &lda_t, t, &tsize,
93  c_t, &ldc_t, work, &lwork, &info );
94  if( info < 0 ) {
95  info = info - 1;
96  }
97  /* Transpose output matrices */
98  LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
99  /* Release memory and exit */
100  LAPACKE_free( c_t );
101 exit_level_1:
102  LAPACKE_free( a_t );
103 exit_level_0:
104  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
105  LAPACKE_xerbla( "LAPACKE_zgemqr_work", info );
106  }
107  } else {
108  info = -1;
109  LAPACKE_xerbla( "LAPACKE_zgemqr_work", info );
110  }
111  return info;
112 }
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
lapack_int LAPACKE_zgemqr_work(int matrix_layout, 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 *t, lapack_int tsize, lapack_complex_double *c, lapack_int ldc, lapack_complex_double *work, lapack_int lwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
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)
#define lapack_int
Definition: lapacke.h:47
#define lapack_complex_double
Definition: lapacke.h:90
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_zgemqr(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 *t, lapack_int *tsize, lapack_complex_double *c, lapack_int *ldc, lapack_complex_double *work, lapack_int *lwork, lapack_int *info)
void LAPACKE_xerbla(const char *name, lapack_int info)