Function sign_mask

include/half.hpp:591–599

Platform-independent sign mask. \param arg integer value in two's complement \retval -1 if \a arg negative \retval 0 if \a arg positive

		/// \retval -1 if \a arg negative
		/// \retval 0 if \a arg positive
		inline uint32 sign_mask(uint32 arg)
		{
			static const int N = std::numeric_limits<uint32>::digits - 1;
		#if HALF_TWOS_COMPLEMENT_INT
			return static_cast<int32>(arg) >> N;
		#else
			return -((arg>>N)&1);
		#endif
		}

		/// Platform-independent arithmetic right shift.
		/// \param arg integer value in two's complement