299 template <typename T> struct hb_is_signed;
300 template <> struct hb_is_signed<signed char> { enum { value = true }; };  struct
301 template <> struct hb_is_signed<signed short> { enum { value = true }; };  argument
302 template <> struct hb_is_signed<signed int> { enum { value = true }; };  argument
303 template <> struct hb_is_signed<signed long> { enum { value = true }; };  struct
304 template <> struct hb_is_signed<unsigned char> { enum { value = false }; };  struct
305 template <> struct hb_is_signed<unsigned short> { enum { value = false }; };  argument
306 template <> struct hb_is_signed<unsigned int> { enum { value = false }; };  struct
307 template <> struct hb_is_signed<unsigned long> { enum { value = false }; };  struct
316 template <> struct hb_is_signed<__int8> { enum { value = true }; };  struct
327   static_assert (!hb_is_signed<T>::value, "");  in hb_in_range()