Function int2half

src/backend/common/half.hpp:830–834

         typename std::enable_if_t<std::is_integral<T>::value &&
                                   std::is_signed<T>::value>* = nullptr>
AF_CONSTEXPR __DH__ native_half_t int2half(T value) noexcept {
    native_half_t out = (value < 0) ? int2half_impl<R, true, T>(value)
                                    : int2half_impl<R, false, T>(value);
    return out;
}
#endif

template<typename T, std::float_round_style R = std::round_to_nearest