Function arithmetic_shift

include/half.hpp:605–612

Platform-independent arithmetic right shift. \param arg integer value in two's complement \param i shift amount (at most 31) \return \a arg right shifted for \a i bits with possible sign extension

		/// \param i shift amount (at most 31)
		/// \return \a arg right shifted for \a i bits with possible sign extension
		inline uint32 arithmetic_shift(uint32 arg, int i)
		{
		#if HALF_TWOS_COMPLEMENT_INT
			return static_cast<int32>(arg) >> i;
		#else
			return static_cast<int32>(arg)/(static_cast<int32>(1)<<i) - ((arg>>(std::numeric_limits<uint32>::digits-1))&1);
		#endif
		}

		/// \}
		/// \name Error handling