848 struct IsIntegralHelper : FalseType {};  struct
850 template<> struct IsIntegralHelper<char> : TrueType {};  struct
851 template<> struct IsIntegralHelper<signed char> : TrueType {};  struct
852 template<> struct IsIntegralHelper<unsigned char> : TrueType {};  struct
853 template<> struct IsIntegralHelper<short> : TrueType {};  struct
854 template<> struct IsIntegralHelper<unsigned short> : TrueType {};  struct
855 template<> struct IsIntegralHelper<int> : TrueType {};  struct
856 template<> struct IsIntegralHelper<unsigned int> : TrueType {};  struct
857 template<> struct IsIntegralHelper<long> : TrueType {};  struct
858 template<> struct IsIntegralHelper<unsigned long> : TrueType {};  struct
859 template<> struct IsIntegralHelper<long long> : TrueType {};  struct
860 template<> struct IsIntegralHelper<unsigned long long> : TrueType {};  struct
861 template<> struct IsIntegralHelper<bool> : TrueType {};  struct
862 template<> struct IsIntegralHelper<wchar_t> : TrueType {};  struct
863 template<> struct IsIntegralHelper<char16_t> : TrueType {};  struct