nufft.h File Reference

contains the interface to non-uniform FFT library by L. Greengard. More...

#include <iostream>
#include "dendro.h"

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Functions
void	nufft3d1f90_ (int nj, double *xj, double *yj, double *zj, DendroComplex *cj, int iflag, double eps, int ms, int mt, int mu, double *fk, int ier)
	: computes the nufft type 1 (nufft) More...
void	nufft3d2f90_ (int nj, double *xj, double *yj, double *zj, DendroComplex *cj, int iflag, double eps, int ms, int mt, int mu, double *fk, int ier)
	: computes the nufft type 2 (nufft) (inverse ft) More...

Detailed Description

contains the interface to non-uniform FFT library by L. Greengard.

Author

Milinda Fernando (milin.nosp@m.d@cs.nosp@m..utah.nosp@m..edu)

Date

2019-04-15 School of Computing, University of Utah.

Copyright

Copyright (c) 2019

Function Documentation

nufft3d1f90_()

void nufft3d1f90_	(	int	nj,
		double *	xj,
		double *	yj,
		double *	zj,
		DendroComplex *	cj,
		int	iflag,
		double	eps,
		int	ms,
		int	mt,
		int	mu,
		double *	fk,
		int	ier
	)

: computes the nufft type 1 (nufft)

Parameters

[in]	nj	: number of sources.
[in]	xj	: x coord values
[in]	yj	: y coord values
[in]	zj	: z coord values
[in]	cj	: function values.
[in]	iflag	: if >= 0 exponential with positive sign, used in fft
[in]	eps	: user defined tolerance
[in]	ms	: ft coefficient array size x
[in]	mt	: ft coefficient array size y
[in]	mu	: ft coefficient array size z
[out]	fk	: computed fft coefficients
[out]	ier	: error return code.

nufft3d2f90_()

void nufft3d2f90_	(	int	nj,
		double *	xj,
		double *	yj,
		double *	zj,
		DendroComplex *	cj,
		int	iflag,
		double	eps,
		int	ms,
		int	mt,
		int	mu,
		double *	fk,
		int	ier
	)

: computes the nufft type 2 (nufft) (inverse ft)

Parameters

[in]	nj	: number of sources.
[in]	xj	: x coord values
[in]	yj	: y coord values
[in]	zj	: z coord values
[out]	cj	: function values.
[in]	iflag	: if >= 0 exponential with positive sign, used in fft
[in]	eps	: user defined tolerance
[in]	ms	: ft coefficient array size x
[in]	mt	: ft coefficient array size y
[in]	mu	: ft coefficient array size z
[in]	fk	: computed fft coefficients
[out]	ier	: error return code.