FLA_Apply_Q_blk_external.c File Reference

(r12600)

Functions
FLA_Error	FLA_Apply_Q_blk_external (FLA_Side side, FLA_Trans trans, FLA_Store storev, FLA_Obj A, FLA_Obj t, FLA_Obj B)

---

Function Documentation

FLA_Error FLA_Apply_Q_blk_external	(	FLA_Side	side,
		FLA_Trans	trans,
		FLA_Store	storev,
		FLA_Obj	A,
		FLA_Obj	t,
		FLA_Obj	B
	)

References F77_cunmlq(), F77_cunmqr(), F77_dormlq(), F77_dormqr(), F77_sormlq(), F77_sormqr(), F77_zunmlq(), F77_zunmqr(), FLA_Apply_Q_check(), FLA_Check_error_level(), FLA_Obj_col_stride(), FLA_Obj_create(), FLA_Obj_datatype(), FLA_Obj_free(), FLA_Obj_has_zero_dim(), FLA_Obj_length(), FLA_Obj_vector_dim(), FLA_Obj_width(), FLA_Param_map_flame_to_netlib_side(), FLA_Param_map_flame_to_netlib_trans(), and FLA_Query_blocksize().

{
  int          info = 0;
#ifdef FLA_ENABLE_EXTERNAL_LAPACK_INTERFACES
  FLA_Datatype datatype;
  // int          m_A, n_A;
  int          m_B, n_B;
  int          cs_A;
  int          cs_B;
  int          k_t;
  int          lwork;
  char         blas_side;
  char         blas_trans;
  FLA_Obj      work_obj;

  if ( FLA_Check_error_level() == FLA_FULL_ERROR_CHECKING )
    FLA_Apply_Q_check( side, trans, storev, A, t, B );

  if ( FLA_Obj_has_zero_dim( A ) ) return FLA_SUCCESS;

  datatype = FLA_Obj_datatype( A );

  // m_A      = FLA_Obj_length( A );
  // n_A      = FLA_Obj_width( A );
  cs_A     = FLA_Obj_col_stride( A );

  m_B      = FLA_Obj_length( B );
  n_B      = FLA_Obj_width( B );
  cs_B     = FLA_Obj_col_stride( B );

  k_t      = FLA_Obj_vector_dim( t );

  FLA_Param_map_flame_to_netlib_side( side, &blas_side );
  FLA_Param_map_flame_to_netlib_trans( trans, &blas_trans );

  if ( side == FLA_LEFT )
    lwork  = n_B * FLA_Query_blocksize( datatype, FLA_DIMENSION_MIN );
  else
    lwork  = m_B * FLA_Query_blocksize( datatype, FLA_DIMENSION_MIN );

  FLA_Obj_create( datatype, lwork, 1, 0, 0, &work_obj );
  

  switch( datatype ){

  case FLA_FLOAT:
  {
    float *buff_A    = ( float * ) FLA_FLOAT_PTR( A );
    float *buff_t    = ( float * ) FLA_FLOAT_PTR( t );
    float *buff_B    = ( float * ) FLA_FLOAT_PTR( B );
    float *buff_work = ( float * ) FLA_FLOAT_PTR( work_obj );

    if ( storev == FLA_COLUMNWISE )
      F77_sormqr( &blas_side,
                  &blas_trans,
                  &m_B,
                  &n_B,
                  &k_t,
                  buff_A, &cs_A,
                  buff_t,
                  buff_B, &cs_B,
                  buff_work, &lwork,
                  &info );
    else // storev == FLA_ROWWISE
      F77_sormlq( &blas_side,
                  &blas_trans,
                  &m_B,
                  &n_B,
                  &k_t,
                  buff_A, &cs_A,
                  buff_t,
                  buff_B, &cs_B,
                  buff_work, &lwork,
                  &info );

    break;
  }

  case FLA_DOUBLE:
  {
    double *buff_A    = ( double * ) FLA_DOUBLE_PTR( A );
    double *buff_t    = ( double * ) FLA_DOUBLE_PTR( t );
    double *buff_B    = ( double * ) FLA_DOUBLE_PTR( B );
    double *buff_work = ( double * ) FLA_DOUBLE_PTR( work_obj );

    if ( storev == FLA_COLUMNWISE )
      F77_dormqr( &blas_side,
                  &blas_trans,
                  &m_B,
                  &n_B,
                  &k_t,
                  buff_A, &cs_A,
                  buff_t,
                  buff_B, &cs_B,
                  buff_work, &lwork,
                  &info );
    else // storev == FLA_ROWWISE
      F77_dormlq( &blas_side,
                  &blas_trans,
                  &m_B,
                  &n_B,
                  &k_t,
                  buff_A, &cs_A,
                  buff_t,
                  buff_B, &cs_B,
                  buff_work, &lwork,
                  &info );

    break;
  }

  case FLA_COMPLEX:
  {
    scomplex *buff_A    = ( scomplex * ) FLA_COMPLEX_PTR( A );
    scomplex *buff_t    = ( scomplex * ) FLA_COMPLEX_PTR( t );
    scomplex *buff_B    = ( scomplex * ) FLA_COMPLEX_PTR( B );
    scomplex *buff_work = ( scomplex * ) FLA_COMPLEX_PTR( work_obj );

    if ( storev == FLA_COLUMNWISE )
      F77_cunmqr( &blas_side,
                  &blas_trans,
                  &m_B,
                  &n_B,
                  &k_t,
                  buff_A, &cs_A,
                  buff_t,
                  buff_B, &cs_B,
                  buff_work, &lwork,
                  &info );
    else // storev == FLA_ROWWISE
      F77_cunmlq( &blas_side,
                  &blas_trans,
                  &m_B,
                  &n_B,
                  &k_t,
                  buff_A, &cs_A,
                  buff_t,
                  buff_B, &cs_B,
                  buff_work, &lwork,
                  &info );

    break;
  }

  case FLA_DOUBLE_COMPLEX:
  {
    dcomplex *buff_A    = ( dcomplex * ) FLA_DOUBLE_COMPLEX_PTR( A );
    dcomplex *buff_t    = ( dcomplex * ) FLA_DOUBLE_COMPLEX_PTR( t );
    dcomplex *buff_B    = ( dcomplex * ) FLA_DOUBLE_COMPLEX_PTR( B );
    dcomplex *buff_work = ( dcomplex * ) FLA_DOUBLE_COMPLEX_PTR( work_obj );

    if ( storev == FLA_COLUMNWISE )
      F77_zunmqr( &blas_side,
                  &blas_trans,
                  &m_B,
                  &n_B,
                  &k_t,
                  buff_A, &cs_A,
                  buff_t,
                  buff_B, &cs_B,
                  buff_work, &lwork,
                  &info );
    else // storev == FLA_ROWWISE
      F77_zunmlq( &blas_side,
                  &blas_trans,
                  &m_B,
                  &n_B,
                  &k_t,
                  buff_A, &cs_A,
                  buff_t,
                  buff_B, &cs_B,
                  buff_work, &lwork,
                  &info );

    break;
  }

  }

  FLA_Obj_free( &work_obj );
#else
  FLA_Check_error_code( FLA_EXTERNAL_LAPACK_NOT_IMPLEMENTED );
#endif

  return info;
}