src/numeric/fourier/kiss_fft_state.hh File Reference

#include <iostream>
#include <string>
#include <limits>
#include <cmath>
#include <complex>
#include <vector>

Classes
class	numeric::fourier::kiss_fft_state
class	numeric::fourier::kiss_fftr_state
class	numeric::fourier::kiss_fftnd_state
class	numeric::fourier::kiss_fftndr_state
Namespaces
namespace	numeric
	A 1D histogram based upon a map structure.
namespace	numeric::fourier
Defines
#define	kiss_fft_scalar   double
#define	KISSFFT_MAXFACTORS   32
Typedefs
typedef std::complex < kiss_fft_scalar >	numeric::fourier::kiss_fft_cpx
typedef class kiss_fft_state *	numeric::fourier::kiss_fft_cfg
typedef class kiss_fftnd_state *	numeric::fourier::kiss_fftnd_cfg
typedef class kiss_fftr_state *	numeric::fourier::kiss_fftr_cfg
typedef class kiss_fftndr_state *	numeric::fourier::kiss_fftndr_cfg

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Detailed Description

Author:

Frank DiMaio

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Define Documentation

#define kiss_fft_scalar   double

#define KISSFFT_MAXFACTORS   32

In addition to state info, the state variables also contain a pointer to a precomputed buffer. To avoid frequent allocation/recalculation of this buffer, it may make sense to cache these buffers If many FFTs of the same size were requested, only a single allocation would be needed However, if many different-sized FFTs were desired, the memory usage of the cache could be quite large.