kernels.h File Reference

Header file with predefined kernels for the fast summation algorithm. More...

#include "config.h"
#include "nfft3.h"
#include "infft.h"

Go to the source code of this file.

Functions
C	gaussian (R x, int der, const R *param)
	K(x)=exp(-x^2/c^2)
C	multiquadric (R x, int der, const R *param)
	K(x)=sqrt(x^2+c^2)
C	inverse_multiquadric (R x, int der, const R *param)
	K(x)=1/sqrt(x^2+c^2)
C	logarithm (R x, int der, const R *param)
	K(x)=log |x|.
C	thinplate_spline (R x, int der, const R *param)
	K(x) = x^2 log |x|.
C	one_over_square (R x, int der, const R *param)
	K(x) = 1/x^2.
C	one_over_modulus (R x, int der, const R *param)
	K(x) = 1/|x|.
C	one_over_x (R x, int der, const R *param)
	K(x) = 1/x.
C	inverse_multiquadric3 (R x, int der, const R *param)
	K(x) = 1/sqrt(x^2+c^2)^3.
C	sinc_kernel (R x, int der, const R *param)
	K(x) = sin(cx)/x.
C	cosc (R x, int der, const R *param)
	K(x) = cos(cx)/x.
C	kcot (R x, int der, const R *param)
	K(x) = cot(cx)
C	one_over_cube (R x, int der, const R *param)
	K(x) = 1/x^3.
C	log_sin (R x, int der, const R *param)
	K(x) = log(|sin(cx)|)

Detailed Description

Header file with predefined kernels for the fast summation algorithm.

Definition in file kernels.h.