Synopsis

gint        gwy_fft_hum                     (gint dir,
                                             gdouble *re_in,
                                             gdouble *im_in,
                                             gdouble *re_out,
                                             gdouble *im_out,
                                             gint n);
void        gwy_fft_window                  (gdouble *data,
                                             gint n,
                                             GwyWindowingType windowing);