LAPACK  3.6.1 LAPACK: Linear Algebra PACKage
 lapack_int LAPACKE_dormrq_work ( int matrix_layout, char side, char trans, lapack_int m, lapack_int n, lapack_int k, const double * a, lapack_int lda, const double * tau, double * c, lapack_int ldc, double * work, lapack_int lwork )

Definition at line 36 of file lapacke_dormrq_work.c.

41 {
42  lapack_int info = 0;
43  lapack_int lda_t, ldc_t;
44  double *a_t = NULL, *c_t = NULL;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_dormrq( &side, &trans, &m, &n, &k, a, &lda, tau, c, &ldc, work,
48  &lwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lda_t = MAX(1,k);
54  ldc_t = MAX(1,m);
55  /* Check leading dimension(s) */
56  if( lda < m ) {
57  info = -8;
58  LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
59  return info;
60  }
61  if( ldc < n ) {
62  info = -11;
63  LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
64  return info;
65  }
66  /* Query optimal working array(s) size if requested */
67  if( lwork == -1 ) {
68  LAPACK_dormrq( &side, &trans, &m, &n, &k, a, &lda_t, tau, c, &ldc_t,
69  work, &lwork, &info );
70  return (info < 0) ? (info - 1) : info;
71  }
72  /* Allocate memory for temporary array(s) */
73  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,m) );
74  if( a_t == NULL ) {
76  goto exit_level_0;
77  }
78  c_t = (double*)LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,n) );
79  if( c_t == NULL ) {
81  goto exit_level_1;
82  }
83  /* Transpose input matrices */
84  LAPACKE_dge_trans( matrix_layout, k, m, a, lda, a_t, lda_t );
85  LAPACKE_dge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
86  /* Call LAPACK function and adjust info */
87  LAPACK_dormrq( &side, &trans, &m, &n, &k, a_t, &lda_t, tau, c_t, &ldc_t,
88  work, &lwork, &info );
89  if( info < 0 ) {
90  info = info - 1;
91  }
92  /* Transpose output matrices */
93  LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
94  /* Release memory and exit */
95  LAPACKE_free( c_t );
96 exit_level_1:
97  LAPACKE_free( a_t );
98 exit_level_0:
99  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
100  LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
101  }
102  } else {
103  info = -1;
104  LAPACKE_xerbla( "LAPACKE_dormrq_work", info );
105  }
106  return info;
107 }
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACK_dormrq(char *side, char *trans, lapack_int *m, lapack_int *n, lapack_int *k, const double *a, lapack_int *lda, const double *tau, double *c, lapack_int *ldc, double *work, lapack_int *lwork, lapack_int *info)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_free(p)
Definition: lapacke.h:113
#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

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