kiss_fft.h File Reference

#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>

Go to the source code of this file.

Classes
struct	kiss_fft_cpx
Defines
#define	KISS_FFT_MALLOC   malloc
#define	kiss_fft_scalar   float
#define	kiss_fft_free   free
#define	kiss_fftr_next_fast_size_real(n)   (kiss_fft_next_fast_size( ((n)+1)>>1)<<1)
Typedefs
typedef struct kiss_fft_state *	kiss_fft_cfg
Functions
kiss_fft_cfg	kiss_fft_alloc (int nfft, int inverse_fft, void *mem, size_t *lenmem)
void	kiss_fft (kiss_fft_cfg cfg, const kiss_fft_cpx *fin, kiss_fft_cpx *fout)
void	kiss_fft_stride (kiss_fft_cfg cfg, const kiss_fft_cpx *fin, kiss_fft_cpx *fout, int fin_stride)
void	kiss_fft_cleanup (void)
int	kiss_fft_next_fast_size (int n)

---

Define Documentation

#define KISS_FFT_MALLOC   malloc

Referenced by find_cached_fft(), kiss_fft_alloc(), kiss_fftr_alloc(), main(), and two_tone_test().

#define kiss_fft_scalar   float

Referenced by fft_file_real(), fft_filend_real(), kiss_fftndr_alloc(), main(), rand_scalar(), transform_signal(), and two_tone_test().

#define kiss_fft_free   free

#define kiss_fftr_next_fast_size_real

(

n

)

(kiss_fft_next_fast_size( ((n)+1)>>1)<<1)

---

Typedef Documentation

typedef struct kiss_fft_state* kiss_fft_cfg

---

Function Documentation

kiss_fft_cfg kiss_fft_alloc	(	int	nfft,
		int	inverse_fft,
		void *	mem,
		size_t *	lenmem
	)

References kiss_fft_state::factors, kiss_fft_state::inverse, kf_cexp, kf_factor(), KISS_FFT_MALLOC, kiss_fft_state::nfft, testkiss::pi, and kiss_fft_state::twiddles.

Referenced by fft_file(), find_cached_fft(), kiss_fftnd_alloc(), kiss_fftr_alloc(), main(), setup(), and test1d().

void kiss_fft	(	kiss_fft_cfg	cfg,
		const kiss_fft_cpx *	fin,
		kiss_fft_cpx *	fout
	)

References kiss_fft_stride().

Referenced by doit(), fft_file(), kfc_fft(), kfc_ifft(), kiss_fftr(), kiss_fftri(), main(), and test1d().

void kiss_fft_stride	(	kiss_fft_cfg	cfg,
		const kiss_fft_cpx *	fin,
		kiss_fft_cpx *	fout,
		int	fin_stride
	)

References CHECKBUF, kiss_fft_state::factors, kf_work(), kiss_fft_state::nfft, and ntmpbuf.

Referenced by kiss_fft(), and kiss_fftnd().

void kiss_fft_cleanup

(

void

)

References nscratchbuf, and ntmpbuf.

Referenced by main(), and two_tone_test().

int kiss_fft_next_fast_size

(

int

n

)

Referenced by main().