LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgemlq_work()

lapack_int LAPACKE_dgemlq_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 *  t,
lapack_int  tsize,
double *  c,
lapack_int  ldc,
double *  work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_dgemlq_work.c.

42 {
43  lapack_int info = 0;
44  lapack_int r;
45  lapack_int lda_t, ldc_t;
46  double *a_t = NULL, *c_t = NULL;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_dgemlq( &side, &trans, &m, &n, &k, a, &lda, t, &tsize,
50  c, &ldc, 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,k);
57  ldc_t = MAX(1,m);
58  /* Check leading dimension(s) */
59  if( lda < r ) {
60  info = -8;
61  LAPACKE_xerbla( "LAPACKE_dgemlq_work", info );
62  return info;
63  }
64  if( ldc < n ) {
65  info = -11;
66  LAPACKE_xerbla( "LAPACKE_dgemlq_work", info );
67  return info;
68  }
69  /* Query optimal working array(s) size if requested */
70  if( lwork == -1 ) {
71  LAPACK_dgemlq( &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  if( LAPACKE_lsame( side, 'l' ) ) {
77  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,m) );
78  } else {
79  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
80  }
81  if( a_t == NULL ) {
83  goto exit_level_0;
84  }
85  c_t = (double*)LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,n) );
86  if( c_t == NULL ) {
88  goto exit_level_1;
89  }
90  /* Transpose input matrices */
91  LAPACKE_dge_trans( matrix_layout, k, m, a, lda, a_t, lda_t );
92  LAPACKE_dge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
93  /* Call LAPACK function and adjust info */
94  LAPACK_dgemlq( &side, &trans, &m, &n, &k, a_t, &lda_t, t, &tsize,
95  c_t, &ldc_t, work, &lwork, &info );
96  if( info < 0 ) {
97  info = info - 1;
98  }
99  /* Transpose output matrices */
100  LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
101  /* Release memory and exit */
102  LAPACKE_free( c_t );
103 exit_level_1:
104  LAPACKE_free( a_t );
105 exit_level_0:
106  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
107  LAPACKE_xerbla( "LAPACKE_dgemlq_work", info );
108  }
109  } else {
110  info = -1;
111  LAPACKE_xerbla( "LAPACKE_dgemlq_work", info );
112  }
113  return info;
114 }
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
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_dgemlq(char *side, char *trans, lapack_int *m, lapack_int *n, lapack_int *k, const double *a, lapack_int *lda, const double *t, lapack_int *tsize, double *c, lapack_int *ldc, double *work, lapack_int *lwork, lapack_int *info)
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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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