kiss_fft_state.hh File Reference

#include <complex>
#include <vector>

Classes
class	numeric::fourier::kiss_fft_state
class	numeric::fourier::kiss_dct_state
class	numeric::fourier::kiss_fftsplit_state
class	numeric::fourier::kiss_fftr_state
class	numeric::fourier::kiss_fftnd_state
class	numeric::fourier::kiss_fftndr_state

Namespaces
	numeric
	Unit headers.
	numeric::fourier

Macros
#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_fftsplit_state *	numeric::fourier::kiss_fftsplit_cfg
typedef class kiss_dct_state *	numeric::fourier::kiss_dct_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

Detailed Description

Author

Frank DiMaio

Macro Definition Documentation

#define kiss_fft_scalar   double

Referenced by numeric::fourier::kiss_idct().

#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.