Function check_underflow

include/half.hpp:767–773

Check value for underflow. \param arg non-zero half-precision value to check \return \a arg \exception FE_UNDERFLOW if arg is subnormal

		/// \return \a arg
		/// \exception FE_UNDERFLOW if arg is subnormal
		inline HALF_CONSTEXPR_NOERR unsigned int check_underflow(unsigned int arg)
		{
		#if HALF_ERRHANDLING && !HALF_ERRHANDLING_UNDERFLOW_TO_INEXACT
			raise(FE_UNDERFLOW, !(arg&0x7C00));
		#endif
			return arg;
		}

		/// \}
		/// \name Conversion and rounding