cs_interpolate.c File Reference

#include "cs_defs.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bft_mem.h"
#include "bft_error.h"
#include "bft_printf.h"
#include "cs_field_default.h"
#include "cs_gradient.h"
#include "cs_halo.h"
#include "cs_mesh.h"
#include "cs_mesh_location.h"
#include "cs_mesh_quantities.h"
#include "cs_parall.h"
#include "cs_interpolate.h"

Include dependency graph for cs_interpolate.c:

Functions
void	cs_interpolate_from_location_p0 (void *input, cs_datatype_t datatype, int val_dim, cs_lnum_t n_points, const cs_lnum_t point_location[], const cs_real_3_t point_coords[], const void *location_vals, void *point_vals)
	Interpolate values defined on a mesh location at a given set of points using a P0 interpolation. More...
void	cs_interpolate_from_location_p1 (void *input, cs_datatype_t datatype, int val_dim, cs_lnum_t n_points, const cs_lnum_t point_location[], const cs_real_3_t point_coords[], const void *location_vals, void *point_vals)
	Interpolate values defined on a mesh location at a given set of points using a P1 interpolation. More...

Detailed Description

Interpolation function handling.

Function Documentation

cs_interpolate_from_location_p0()

void cs_interpolate_from_location_p0	(	void *	input,
		cs_datatype_t	datatype,
		int	val_dim,
		cs_lnum_t	n_points,
		const cs_lnum_t	point_location[],
		const cs_real_3_t	point_coords[],
		const void *	location_vals,
		void *	point_vals
	)

Interpolate values defined on a mesh location at a given set of points using a P0 interpolation.

(DOXYGEN_SHOULD_SKIP_THIS)

This function allows unlocated points (with point_location < 0), to which the value 0 is assigned.

Parameters

[in,out]	input	pointer to optional (untyped) value or structure.
[in]	datatype	associated datatype
[in]	val_dim	dimension of data values
[in]	n_points	number of interpolation points
[in]	point_location	location of points in mesh elements
[in]	point_coords	point coordinates
[in]	location_vals	values at mesh location
[out]	point_vals	interpolated values at points

cs_interpolate_from_location_p1()

void cs_interpolate_from_location_p1	(	void *	input,
		cs_datatype_t	datatype,
		int	val_dim,
		cs_lnum_t	n_points,
		const cs_lnum_t	point_location[],
		const cs_real_3_t	point_coords[],
		const void *	location_vals,
		void *	point_vals
	)

Interpolate values defined on a mesh location at a given set of points using a P1 interpolation.

This function assumes the input is a field name. If no field matches the name, a "generic" interpolation (assuming homogeneous Neumann boundary conditions) is used).

The P1 interpolation is based on a local least-squares gradient, so it is assumed that ghost values of the localtion_vals array are synchronized if present.

If the field's boundary values (i.e. associated field) are known, they are used in the interpolation. Otherwise, if boundary conditions are defined, they are used. When neither boundary values nor boundary conditions are known, homogeneous Neumann boundary conditions are assumed.

Parameters

[in,out]	input	pointer to optional (untyped) value or structure.
[in]	datatype	associated datatype
[in]	val_dim	dimension of data values
[in]	n_points	number of interpolation points
[in]	point_location	location of points in mesh elements
[in]	point_coords	point coordinates
[in]	location_vals	values at mesh location
[out]	point_vals	interpolated values at points