31#define _RANGES_CMP_H 1
33#if __cplusplus > 201703L
37namespace std _GLIBCXX_VISIBILITY(default)
39_GLIBCXX_BEGIN_NAMESPACE_VERSION
41 struct __is_transparent;
49 template<
typename _Tp>
52 operator()(_Tp&& __t)
const noexcept
55 using is_transparent = __is_transparent;
58#ifdef __cpp_lib_concepts
60#define __cpp_lib_ranges 202106L
69 template<
typename _Tp,
typename _Up>
70 concept __less_builtin_ptr_cmp
71 =
requires (_Tp&& __t, _Up&& __u) { { __t < __u } -> same_as<bool>; }
72 && convertible_to<_Tp, const volatile void*>
73 && convertible_to<_Up, const volatile void*>
74 && (!
requires(_Tp&& __t, _Up&& __u)
76 && !
requires(_Tp&& __t, _Up&& __u)
88 template<
typename _Tp,
typename _Up>
89 requires equality_comparable_with<_Tp, _Up>
91 operator()(_Tp&& __t, _Up&& __u)
const
95 using is_transparent = __is_transparent;
101 template<
typename _Tp,
typename _Up>
102 requires equality_comparable_with<_Tp, _Up>
104 operator()(_Tp&& __t, _Up&& __u)
const
108 using is_transparent = __is_transparent;
114 template<
typename _Tp,
typename _Up>
115 requires totally_ordered_with<_Tp, _Up>
117 operator()(_Tp&& __t, _Up&& __u)
const
120 if constexpr (__detail::__less_builtin_ptr_cmp<_Tp, _Up>)
122#ifdef __cpp_lib_is_constant_evaluated
126 auto __x =
reinterpret_cast<__UINTPTR_TYPE__
>(
128 auto __y =
reinterpret_cast<__UINTPTR_TYPE__
>(
136 using is_transparent = __is_transparent;
142 template<
typename _Tp,
typename _Up>
143 requires totally_ordered_with<_Tp, _Up>
145 operator()(_Tp&& __t, _Up&& __u)
const
149 using is_transparent = __is_transparent;
155 template<
typename _Tp,
typename _Up>
156 requires totally_ordered_with<_Tp, _Up>
158 operator()(_Tp&& __t, _Up&& __u)
const
162 using is_transparent = __is_transparent;
168 template<
typename _Tp,
typename _Up>
169 requires totally_ordered_with<_Tp, _Up>
171 operator()(_Tp&& __t, _Up&& __u)
const
175 using is_transparent = __is_transparent;
180_GLIBCXX_END_NAMESPACE_VERSION
ISO C++ entities toplevel namespace is std.