Function hash_thread_id

concurrentqueue.h:475–487

	template<std::size_t size> struct hash_32_or_64 : public _hash_32_or_64<(size > 4)> {  };
	
	static inline size_t hash_thread_id(thread_id_t id)
	{
		static_assert(sizeof(thread_id_t) <= 8, "Expected a platform where thread IDs are at most 64-bit values");
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wuseless-cast"
#endif
		return static_cast<size_t>(hash_32_or_64<sizeof(thread_id_converter<thread_id_t>::thread_id_hash_t)>::hash(
			thread_id_converter<thread_id_t>::prehash(id)));
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC diagnostic pop
#endif
	}
	
	template<typename T>
	static inline bool circular_less_than(T a, T b)