LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgemqrt_work()

lapack_int LAPACKE_dgemqrt_work ( int  matrix_layout,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
lapack_int  nb,
const double *  v,
lapack_int  ldv,
const double *  t,
lapack_int  ldt,
double *  c,
lapack_int  ldc,
double *  work 
)

Definition at line 36 of file lapacke_dgemqrt_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_dgemqrt( &side, &trans, &m, &n, &k, &nb, v, &ldv, t, &ldt, c,
46  &ldc, work, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int ldc_t = MAX(1,m);
52  lapack_int ldt_t = MAX(1,ldt);
53  lapack_int ldv_t = MAX(1,ldv);
54  double* v_t = NULL;
55  double* t_t = NULL;
56  double* c_t = NULL;
57  /* Check leading dimension(s) */
58  if( ldc < n ) {
59  info = -13;
60  LAPACKE_xerbla( "LAPACKE_dgemqrt_work", info );
61  return info;
62  }
63  if( ldt < nb ) {
64  info = -11;
65  LAPACKE_xerbla( "LAPACKE_dgemqrt_work", info );
66  return info;
67  }
68  if( ldv < k ) {
69  info = -9;
70  LAPACKE_xerbla( "LAPACKE_dgemqrt_work", info );
71  return info;
72  }
73  /* Allocate memory for temporary array(s) */
74  v_t = (double*)LAPACKE_malloc( sizeof(double) * ldv_t * MAX(1,k) );
75  if( v_t == NULL ) {
77  goto exit_level_0;
78  }
79  t_t = (double*)LAPACKE_malloc( sizeof(double) * ldt_t * MAX(1,nb) );
80  if( t_t == NULL ) {
82  goto exit_level_1;
83  }
84  c_t = (double*)LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,n) );
85  if( c_t == NULL ) {
87  goto exit_level_2;
88  }
89  /* Transpose input matrices */
90  LAPACKE_dge_trans( matrix_layout, ldv, k, v, ldv, v_t, ldv_t );
91  LAPACKE_dge_trans( matrix_layout, ldt, nb, t, ldt, t_t, ldt_t );
92  LAPACKE_dge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
93  /* Call LAPACK function and adjust info */
94  LAPACK_dgemqrt( &side, &trans, &m, &n, &k, &nb, v_t, &ldv_t, t_t,
95  &ldt_t, c_t, &ldc_t, work, &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_2:
104  LAPACKE_free( t_t );
105 exit_level_1:
106  LAPACKE_free( v_t );
107 exit_level_0:
108  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
109  LAPACKE_xerbla( "LAPACKE_dgemqrt_work", info );
110  }
111  } else {
112  info = -1;
113  LAPACKE_xerbla( "LAPACKE_dgemqrt_work", info );
114  }
115  return info;
116 }
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
void LAPACK_dgemqrt(char *side, char *trans, lapack_int *m, lapack_int *n, lapack_int *k, lapack_int *nb, const double *v, lapack_int *ldv, const double *t, lapack_int *ldt, double *c, lapack_int *ldc, double *work, 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
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