static inline bool parse_opt_N(const char *arg)
static inline int parse_opt_N(const char *arg)
static inline bool parse_opt_N(const char *arg){	int32 tmpi32;		if (atoi(arg)) {		if (set_value(&tmpi32, atoi(arg), 1, 34,				"Gauss interpolation -N value"))			return 1;		gauss_n = tmpi32;	} else {		gauss_n = 5;		no_4point_interpolation = 1;		reduce_quality_flag = 1;	}	return 0;}