Reconstruction Schemes with a centered scheme at order 4 (at the fixed +1/2 position). This scheme is compatible with non uniform grids. More...

Functions/Subroutines
subroutine	t_rec_fast_scheme_o4_centered_compute_weights (stencil, nx, dx, shift, preweights)
	Compute the weights associated to the scheme at each cell in [1:nx].

double precision function	t_rec_fast_scheme_o4_centered_apply_fast (self, values, preweights)
	Apply the corresponding scheme.

Variables
type(t_rec_fast_scheme_o4_centered), target	rec_fast_scheme_o4_centered

Detailed Description

Reconstruction Schemes with a centered scheme at order 4 (at the fixed +1/2 position). This scheme is compatible with non uniform grids.

Note: The scheme is defined for points [-1:+2]; The fixed position is at the end of the 0's cell. This is the usual position for reconstruction schemes.

Function/Subroutine Documentation

double precision function mod_rec_fast_scheme_o4_centered::t_rec_fast_scheme_o4_centered_apply_fast	(	class(t_rec_fast_scheme_o4_centered), intent(in)	self,
		double precision, dimension(:), intent(in)	values,
		class(t_int_grid_preweights), intent(in)	preweights )

Apply the corresponding scheme.

Parameters

[in]	self	The scheme
[in]	values	The discrete (mean) values of the function
[in]	preweights	The precomputed weights (

subroutine mod_rec_fast_scheme_o4_centered::t_rec_fast_scheme_o4_centered_compute_weights	(	class(t_stencil_1d), intent(in)	stencil,
		integer, intent(in)	nx,
		double precision, dimension(:), intent(in)	dx,
		integer, intent(in)	shift,
		class(t_int_grid_preweights), dimension(:), intent(inout)	preweights )

Compute the weights associated to the scheme at each cell in [1:nx].

Warning: as we cannot access to values outside [1:nx], the weights are in fact computed in the computable stencil around the cell.; rec_scheme_o4 is between [0:3]!