311        constexpr pair(_U1&& __x, const _T2& __y)  in _GLIBCXX_VISIBILITY()
312        : first(std::forward<_U1>(__x)), second(__y) { }  in _GLIBCXX_VISIBILITY()
318        explicit constexpr pair(_U1&& __x, const _T2& __y)  in _GLIBCXX_VISIBILITY()
319        : first(std::forward<_U1>(__x)), second(__y) { }  in _GLIBCXX_VISIBILITY()
325        constexpr pair(const _T1& __x, _U2&& __y)  in _GLIBCXX_VISIBILITY()
326        : first(__x), second(std::forward<_U2>(__y)) { }  in _GLIBCXX_VISIBILITY()
332        explicit pair(const _T1& __x, _U2&& __y)  in _GLIBCXX_VISIBILITY()
333        : first(__x), second(std::forward<_U2>(__y)) { }  in _GLIBCXX_VISIBILITY()
341 	constexpr pair(_U1&& __x, _U2&& __y)  in _GLIBCXX_VISIBILITY()
342 	: first(std::forward<_U1>(__x)), second(std::forward<_U2>(__y)) { }  in _GLIBCXX_VISIBILITY()
350 	explicit constexpr pair(_U1&& __x, _U2&& __y)  in _GLIBCXX_VISIBILITY()
351 	: first(std::forward<_U1>(__x)), second(std::forward<_U2>(__y)) { }  in _GLIBCXX_VISIBILITY()
448     operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)  in _GLIBCXX_VISIBILITY()
449     { return __x.first == __y.first && __x.second == __y.second; }  in _GLIBCXX_VISIBILITY()
454     operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)  in _GLIBCXX_VISIBILITY()
455     { return __x.first < __y.first  in _GLIBCXX_VISIBILITY()
456 	     || (!(__y.first < __x.first) && __x.second < __y.second); }  in _GLIBCXX_VISIBILITY()
461     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)  in _GLIBCXX_VISIBILITY()
462     { return !(__x == __y); }  in _GLIBCXX_VISIBILITY()
467     operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)  in _GLIBCXX_VISIBILITY()
468     { return __y < __x; }  in _GLIBCXX_VISIBILITY()
473     operator<=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)  in _GLIBCXX_VISIBILITY()
474     { return !(__y < __x); }  in _GLIBCXX_VISIBILITY()
479     operator>=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)  in _GLIBCXX_VISIBILITY()
480     { return !(__x < __y); }  in _GLIBCXX_VISIBILITY()
495     swap(pair<_T1, _T2>& __x, pair<_T1, _T2>& __y)  in _GLIBCXX_VISIBILITY()
496     noexcept(noexcept(__x.swap(__y)))  in _GLIBCXX_VISIBILITY()
497     { __x.swap(__y); }  in _GLIBCXX_VISIBILITY()
524     make_pair(_T1&& __x, _T2&& __y)  in _GLIBCXX_VISIBILITY()
529       return __pair_type(std::forward<_T1>(__x), std::forward<_T2>(__y));  in _GLIBCXX_VISIBILITY()
534     make_pair(_T1 __x, _T2 __y)  in _GLIBCXX_VISIBILITY()
535     { return pair<_T1, _T2>(__x, __y); }  in _GLIBCXX_VISIBILITY()