Chris@366: #ifndef KISS_FTR_H
Chris@366: #define KISS_FTR_H
Chris@366: 
Chris@366: #include "kiss_fft.h"
Chris@366: #ifdef __cplusplus
Chris@366: extern "C" {
Chris@366: #endif
Chris@366: 
Chris@366:     
Chris@366: /* 
Chris@366:  
Chris@366:  Real optimized version can save about 45% cpu time vs. complex fft of a real seq.
Chris@366: 
Chris@366:  
Chris@366:  
Chris@366:  */
Chris@366: 
Chris@366: typedef struct kiss_fftr_state *kiss_fftr_cfg;
Chris@366: 
Chris@366: 
Chris@366: kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem, size_t * lenmem);
Chris@366: /*
Chris@366:  nfft must be even
Chris@366: 
Chris@366:  If you don't care to allocate space, use mem = lenmem = NULL 
Chris@366: */
Chris@366: 
Chris@366: 
Chris@366: void kiss_fftr(kiss_fftr_cfg cfg,const kiss_fft_scalar *timedata,kiss_fft_cpx *freqdata);
Chris@366: /*
Chris@366:  input timedata has nfft scalar points
Chris@366:  output freqdata has nfft/2+1 complex points
Chris@366: */
Chris@366: 
Chris@366: void kiss_fftri(kiss_fftr_cfg cfg,const kiss_fft_cpx *freqdata,kiss_fft_scalar *timedata);
Chris@366: /*
Chris@366:  input freqdata has  nfft/2+1 complex points
Chris@366:  output timedata has nfft scalar points
Chris@366: */
Chris@366: 
Chris@366: #define kiss_fftr_free free
Chris@366: 
Chris@366: #ifdef __cplusplus
Chris@366: }
Chris@366: #endif
Chris@366: #endif