Function half_cast

include/half.hpp:4461–4461

	/// \exception FE_INVALID if \a T is integer type and result is not representable as \a T
	/// \exception FE_OVERFLOW, ...UNDERFLOW, ...INEXACT according to rounding
	template<typename T,typename U> T half_cast(U arg) { return detail::half_caster<T,U>::cast(arg); }

	/// Cast to or from half-precision floating-point number.
	/// This casts between [half](\ref half_float::half) and any built-in arithmetic type. The values are converted