bfft.cpp File Reference

General FFT for n-dimensional data. More...

#include "rwimg.h"
#include "qsort_functions.h"
#include "options.h"
#include "timer.h"

Functions
int	img_fft_times (int ndim, int minsize, int maxsize, int opt)
	Tests the execution times for a series of image sizes. More...
int	main (int argc, char **argv)

Variables
int	verbose
const char *	use []

Detailed Description

General FFT for n-dimensional data.

Author

Bernard Heymann

Date

Created: 19980805

Modified: 20221117 Implementing the FFTW library

Function Documentation

img_fft_times()

int img_fft_times	(	int	ndim,
		int	minsize,
		int	maxsize,
		int	opt
	)

Tests the execution times for a series of image sizes.

Parameters

ndim	number of dimensions (1,2,3).
minsize	minimum image size.
maxsize	maximum image size.
opt	optimization (with FFTW_MEASURE).

Returns

int 0.

FFTW library (www.fftw.org).
Blank complex floating point images are created and transformed.
Only the call to the complex FFT function is timed.

main()

int main	(	int	argc,
		char **	argv
	)

Variable Documentation

use

const char* use[]

verbose

int verbose

extern