LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dlarfx_work()

lapack_int LAPACKE_dlarfx_work ( int  matrix_layout,
char  side,
lapack_int  m,
lapack_int  n,
const double *  v,
double  tau,
double *  c,
lapack_int  ldc,
double *  work 
)

Definition at line 36 of file lapacke_dlarfx_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_dlarfx( &side, &m, &n, v, &tau, c, &ldc, work );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int ldc_t = MAX(1,m);
49  double* c_t = NULL;
50  /* Check leading dimension(s) */
51  if( ldc < n ) {
52  info = -8;
53  LAPACKE_xerbla( "LAPACKE_dlarfx_work", info );
54  return info;
55  }
56  /* Allocate memory for temporary array(s) */
57  c_t = (double*)LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,n) );
58  if( c_t == NULL ) {
60  goto exit_level_0;
61  }
62  /* Transpose input matrices */
63  LAPACKE_dge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
64  /* Call LAPACK function and adjust info */
65  LAPACK_dlarfx( &side, &m, &n, v, &tau, c_t, &ldc_t, work );
66  info = 0; /* LAPACK call is ok! */
67  /* Transpose output matrices */
68  LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
69  /* Release memory and exit */
70  LAPACKE_free( c_t );
71 exit_level_0:
72  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
73  LAPACKE_xerbla( "LAPACKE_dlarfx_work", info );
74  }
75  } else {
76  info = -1;
77  LAPACKE_xerbla( "LAPACKE_dlarfx_work", info );
78  }
79  return info;
80 }
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
#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
void LAPACK_dlarfx(char *side, lapack_int *m, lapack_int *n, const double *v, double *tau, double *c, lapack_int *ldc, double *work)
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