Function enlarge_vector

transcoder/basisu.h:212–212

	template<typename T> inline void clear_vector(T &vec) { vec.erase(vec.begin(), vec.end()); }		
	template<typename T> inline typename T::value_type *enlarge_vector(T &vec, size_t n) { size_t cs = vec.size(); vec.resize(cs + n); return &vec[cs]; }

	inline bool is_pow2(uint32_t x) { return x && ((x & (x - 1U)) == 0U); }
	inline bool is_pow2(uint64_t x) { return x && ((x & (x - 1U)) == 0U); }