87   template<typename _Callable, typename... _Args>  in _GLIBCXX_VISIBILITY()
88     constexpr typename __invoke_result<_Callable, _Args...>::type  in _GLIBCXX_VISIBILITY()
89     __invoke(_Callable&& __fn, _Args&&... __args)  in _GLIBCXX_VISIBILITY()
90     noexcept(__is_nothrow_invocable<_Callable, _Args...>::value)  in _GLIBCXX_VISIBILITY()
92       using __result = __invoke_result<_Callable, _Args...>;  in _GLIBCXX_VISIBILITY()
95       return std::__invoke_impl<__type>(__tag{}, std::forward<_Callable>(__fn),  in _GLIBCXX_VISIBILITY()
101   template<typename _Res, typename _Callable, typename... _Args>  in _GLIBCXX_VISIBILITY()
102     constexpr enable_if_t<is_invocable_r_v<_Res, _Callable, _Args...>, _Res>  in _GLIBCXX_VISIBILITY()
103     __invoke_r(_Callable&& __fn, _Args&&... __args)  in _GLIBCXX_VISIBILITY()
104     noexcept(is_nothrow_invocable_r_v<_Res, _Callable, _Args...>)  in _GLIBCXX_VISIBILITY()
106       using __result = __invoke_result<_Callable, _Args...>;  in _GLIBCXX_VISIBILITY()
110 	std::__invoke_impl<__type>(__tag{}, std::forward<_Callable>(__fn),  in _GLIBCXX_VISIBILITY()
114 					  std::forward<_Callable>(__fn),  in _GLIBCXX_VISIBILITY()
118   template<typename _Res, typename _Callable, typename... _Args>  in _GLIBCXX_VISIBILITY()
120       __and_<is_void<_Res>, __is_invocable<_Callable, _Args...>>::value,  in _GLIBCXX_VISIBILITY()
124   template<typename _Res, typename _Callable, typename... _Args>  in _GLIBCXX_VISIBILITY()
127 	     is_convertible<typename __invoke_result<_Callable, _Args...>::type,  in _GLIBCXX_VISIBILITY()
134   template<typename _Res, typename _Callable, typename... _Args>  in _GLIBCXX_VISIBILITY()
135     constexpr __can_invoke_as_nonvoid<_Res, _Callable, _Args...>  in _GLIBCXX_VISIBILITY()
136     __invoke_r(_Callable&& __fn, _Args&&... __args)  in _GLIBCXX_VISIBILITY()
138       using __result = __invoke_result<_Callable, _Args...>;  in _GLIBCXX_VISIBILITY()
141       return std::__invoke_impl<__type>(__tag{}, std::forward<_Callable>(__fn),  in _GLIBCXX_VISIBILITY()
146   template<typename _Res, typename _Callable, typename... _Args>  in _GLIBCXX_VISIBILITY()
147     _GLIBCXX14_CONSTEXPR __can_invoke_as_void<_Res, _Callable, _Args...>  in _GLIBCXX_VISIBILITY()
148     __invoke_r(_Callable&& __fn, _Args&&... __args)  in _GLIBCXX_VISIBILITY()
150       using __result = __invoke_result<_Callable, _Args...>;  in _GLIBCXX_VISIBILITY()
153       std::__invoke_impl<__type>(__tag{}, std::forward<_Callable>(__fn),  in _GLIBCXX_VISIBILITY()