/* do_histogram.c */
int do_histogram(char *, char *);
/* fft_colors.c */
int fft_colors(void);
/* orig_wind.c */
int get_orig_window(struct Cell_head *, char *, char *);
int put_orig_window(struct Cell_head *);
/* save_fft.c */
int save_fft(int, double *[2], double *, double *);
