linogram_fft_test.c File Reference

NFFT-based pseudo-polar FFT and inverse. More...

#include <math.h>
#include <stdlib.h>
#include <complex.h>
#include "nfft3mp.h"

Go to the source code of this file.

Functions
static int	linogram_grid (int T, int rr, NFFT_R *x, NFFT_R *w)
	Generates the points x with weights w for the linogram grid with T slopes and R offsets.
static int	linogram_dft (NFFT_C *f_hat, int NN, NFFT_C *f, int T, int rr, int m)
	discrete pseudo-polar FFT
static int	linogram_fft (NFFT_C *f_hat, int NN, NFFT_C *f, int T, int rr, int m)
	NFFT-based pseudo-polar FFT.
static int	inverse_linogram_fft (NFFT_C *f, int T, int rr, NFFT_C *f_hat, int NN, int max_i, int m)
	NFFT-based inverse pseudo-polar FFT.
static int	comparison_fft (FILE *fp, int N, int T, int rr)
	Comparison of the FFTW, linogram FFT, and inverse linogram FFT.
int	main (int argc, char **argv)
	test program for various parameters

Variables
NFFT_R	GLOBAL_elapsed_time

Detailed Description

NFFT-based pseudo-polar FFT and inverse.

Computes the NFFT-based pseudo-polar FFT and its inverse.

Author

Markus Fenn

Date

2006

Definition in file linogram_fft_test.c.