mpolar_fft_test.c File Reference

NFFT-based polar FFT and inverse on modified polar grid. More...

#include "config.h"
#include <math.h>
#include <stdlib.h>
#include "nfft3util.h"
#include "nfft3.h"
#include "infft.h"

Go to the source code of this file.

Functions
static int	mpolar_grid (int T, int R, double *x, double *w)
	Generates the points with weights for the modified polar grid with angles and offsets.
static int	mpolar_dft (fftw_complex *f_hat, int NN, fftw_complex *f, int T, int R, int m)
	discrete mpolar FFT
static int	mpolar_fft (fftw_complex *f_hat, int NN, fftw_complex *f, int T, int R, int m)
	NFFT-based mpolar FFT.
static int	inverse_mpolar_fft (fftw_complex *f, int T, int R, fftw_complex *f_hat, int NN, int max_i, int m)
	inverse NFFT-based mpolar FFT
static int	comparison_fft (FILE *fp, int N, int T, int R)
	Comparison of the FFTW, mpolar FFT, and inverse mpolar FFT.
int	main (int argc, char **argv)
	test program for various parameters

Variables
double	GLOBAL_elapsed_time

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Detailed Description

NFFT-based polar FFT and inverse on modified polar grid.

Computes the NFFT-based polar FFT and its inverse on a modified polar grid for various parameters.

Author:

Markus Fenn

Date:

2006

Definition in file mpolar_fft_test.c.