sprintf (filt_name, "%s: alpha = %.2f",
name_of_filter (opt_filter), opt_filter_param);
else
sprintf (filt_name, "%s", name_of_filter (opt_filter));
sprintf (filt_name, "%s: alpha = %.2f",
name_of_filter (opt_filter), opt_filter_param);
else
sprintf (filt_name, "%s", name_of_filter (opt_filter));