clean day

fix_fft.h

@@ -1,38 +0,0 @@
-#ifndef FIXFFT_H
-#define FIXFFT_H
-
-//#include <WProgram.h>  //depreacted included in arduino.h
-
-
-
-
-/*
-  fix_fft() - perform forward/inverse fast Fourier transform.
-  fr[n],fi[n] are real and imaginary arrays, both INPUT AND
-  RESULT (in-place FFT), with 0 <= n < 2**m; set inverse to
-  0 for forward transform (FFT), or 1 for iFFT.
-*/
-int fix_fft(char fr[], char fi[], int m, int inverse);
-
-
-
-/*
-  fix_fftr() - forward/inverse FFT on array of real numbers.
-  Real FFT/iFFT using half-size complex FFT by distributing
-  even/odd samples into real/imaginary arrays respectively.
-  In order to save data space (i.e. to avoid two arrays, one
-  for real, one for imaginary samples), we proceed in the
-  following two steps: a) samples are rearranged in the real
-  array so that all even samples are in places 0-(N/2-1) and
-  all imaginary samples in places (N/2)-(N-1), and b) fix_fft
-  is called with fr and fi pointing to index 0 and index N/2
-  respectively in the original array. The above guarantees
-  that fix_fft "sees" consecutive real samples as alternating
-  real and imaginary samples in the complex array.
-*/
-int fix_fftr(char f[], int m, int inverse);
-static inline char FIX_MPY(char a,char b);
-
-
-
-#endif