template <typename T>
	static boost::dynamic_bitset<> getbits(int len, T v, bool flip) {
		union {
			T t;
			unsigned long l;
		} u = { v };

		if (flip) {
			return boost::dynamic_bitset<>(len, _byteswap_ulong(u.l));
		}
		else {
			return boost::dynamic_bitset<>(len, u.l);
		}
}