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real fwd and rev fft works

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Mark Borgerding
2003-12-09 04:10:50 +00:00
parent 14e9b0dce4
commit b737756abb
4 changed files with 98 additions and 36 deletions
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8
kiss_fft.h
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@ -59,6 +59,14 @@ void * kiss_fft2d_alloc(int nrows,int ncols,int inverse_fft);
void kiss_fft2d(const void* cfg_from_alloc , const kiss_fft_cpx *fin,kiss_fft_cpx *fout );
/* Real optimized version can save about 40% cpu time vs. complex fft of a real seq.
*/
void * kiss_fftr_alloc(int nfft,int inverse_fft);
void kiss_fftr(const void * cfg,const kiss_fft_scalar *timedata,kiss_fft_cpx *freqdata);
void kiss_fftri(const void * cfg,const kiss_fft_cpx *freqdata,kiss_fft_scalar *timedata);
/* when done with the cfg for a given fft size and direction, simply free it*/
#define kiss_fft_free free