linint2D.c File Reference

Bilinear interpolation. More...

#include <stdlib.h>
#include <math.h>
#include "../ascot5.h"
#include "linint.h"

Go to the source code of this file.

Functions
void	linint2D_init (linint2D_data *str, real *c, int n_x, int n_y, int bc_x, int bc_y, real x_min, real x_max, real y_min, real y_max)
	Initialize linear interpolation struct for scalar 2D data.
int	linint2D_eval_f (real *f, linint2D_data *str, real x, real y)
	Evaluate interpolated value of 2D scalar field.

Detailed Description

Bilinear interpolation.

Definition in file linint2D.c.

Function Documentation

linint2D_init()

void linint2D_init	(	linint2D_data *	str,
		real *	c,
		int	n_x,
		int	n_y,
		int	bc_x,
		int	bc_y,
		real	x_min,
		real	x_max,
		real	y_min,
		real	y_max )

Initialize linear interpolation struct for scalar 2D data.

Parameters

str	pointer to struct to be initialized
c	array where data is stored
n_x	number of data points in the x direction
n_y	number of data points in the y direction
bc_x	boundary condition for x axis
bc_y	boundary condition for y axis
x_min	minimum value of the x axis
x_max	maximum value of the x axis
y_min	minimum value of the y axis
y_max	maximum value of the y axis

Definition at line 25 of file linint2D.c.

linint2D_eval_f()

int linint2D_eval_f	(	real *	f,
		linint2D_data *	str,
		real	x,
		real	y )

Evaluate interpolated value of 2D scalar field.

This function evaluates the interpolated value of a 2D scalar field using bilinear interpolation.

Parameters

f	variable in which to place the evaluated value
str	data struct for data interpolation
x	x-coordinate
y	y-coordinate

Returns

zero on success and one if (x,y) point is outside the grid.

Definition at line 58 of file linint2D.c.