fourier.h

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/* fourier.h
   ___________________________________________________________________ */
 
 
void fft(double *dat, int n);
int rfft(double *dat, int n);
void ifft(double *dat, int n);
 
void ft_1st_dim(double ***dat, int size2, int size1, int size0);
void ft_2nd_dim(double ***dat, int size2, int size1, int size0);
void ift_1st_dim(double ***dat, int size2, int size1, int size0);
void ift_2nd_dim(double ***dat, int size2, int size1, int size0);
void ft_3rd_dim(double ***dat, int size2, int size1, int size0);