blob: 8e8fecb137e0c959a18806f55e7aadcab613cf1c [file] [log] [blame]
#ifndef KISS_FTR_S32_H
#define KISS_FTR_S32_H
#include "kiss_fft_s32.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
Real optimized version can save about 45% cpu time vs. complex fft of a real seq.
*/
typedef struct kiss_fftr_s32_state *kiss_fftr_s32_cfg;
kiss_fftr_s32_cfg kiss_fftr_s32_alloc(int nfft,int inverse_fft,void * mem, size_t * lenmem);
/*
nfft must be even
If you don't care to allocate space, use mem = lenmem = NULL
*/
void kiss_fftr_s32(kiss_fftr_s32_cfg cfg,const kiss_fft_s32_scalar *timedata,kiss_fft_s32_cpx *freqdata);
/*
input timedata has nfft scalar points
output freqdata has nfft/2+1 complex points
*/
void kiss_fftri_s32(kiss_fftr_s32_cfg cfg,const kiss_fft_s32_cpx *freqdata,kiss_fft_s32_scalar *timedata);
/*
input freqdata has nfft/2+1 complex points
output timedata has nfft scalar points
*/
#define kiss_fftr_s32_free free
#ifdef __cplusplus
}
#endif
#endif