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//===----------------------------------------------------------------------===//
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// The LLVM Compiler Infrastructure
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_FUNCTIONAL_BASE_03
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#define _LIBCPP_FUNCTIONAL_BASE_03
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// manual variadic expansion for <functional>
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struct __derives_from_unary_function
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struct __two {char __lx; char __lxx;};
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static __two __test(...);
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template <class _Ap, class _Rp>
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static unary_function<_Ap, _Rp>
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__test(const volatile unary_function<_Ap, _Rp>*);
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static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value;
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typedef decltype(__test((_Tp*)0)) type;
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struct __derives_from_binary_function
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struct __two {char __lx; char __lxx;};
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static __two __test(...);
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template <class _A1, class _A2, class _Rp>
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static binary_function<_A1, _A2, _Rp>
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__test(const volatile binary_function<_A1, _A2, _Rp>*);
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static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value;
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typedef decltype(__test((_Tp*)0)) type;
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template <class _Tp, bool = __derives_from_unary_function<_Tp>::value>
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struct __maybe_derive_from_unary_function // bool is true
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: public __derives_from_unary_function<_Tp>::type
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struct __maybe_derive_from_unary_function<_Tp, false>
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template <class _Tp, bool = __derives_from_binary_function<_Tp>::value>
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struct __maybe_derive_from_binary_function // bool is true
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: public __derives_from_binary_function<_Tp>::type
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struct __maybe_derive_from_binary_function<_Tp, false>
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template <class _Tp, bool = __has_result_type<_Tp>::value>
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struct __weak_result_type_imp // bool is true
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: public __maybe_derive_from_unary_function<_Tp>,
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public __maybe_derive_from_binary_function<_Tp>
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typedef typename _Tp::result_type result_type;
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struct __weak_result_type_imp<_Tp, false>
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: public __maybe_derive_from_unary_function<_Tp>,
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public __maybe_derive_from_binary_function<_Tp>
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struct __weak_result_type
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: public __weak_result_type_imp<typename remove_reference<_Tp>::type>
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struct __weak_result_type<_Rp ()>
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typedef _Rp result_type;
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struct __weak_result_type<_Rp (&)()>
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typedef _Rp result_type;
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struct __weak_result_type<_Rp (*)()>
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typedef _Rp result_type;
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template <class _Rp, class _A1>
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struct __weak_result_type<_Rp (_A1)>
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: public unary_function<_A1, _Rp>
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template <class _Rp, class _A1>
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struct __weak_result_type<_Rp (&)(_A1)>
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: public unary_function<_A1, _Rp>
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template <class _Rp, class _A1>
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struct __weak_result_type<_Rp (*)(_A1)>
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: public unary_function<_A1, _Rp>
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template <class _Rp, class _Cp>
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struct __weak_result_type<_Rp (_Cp::*)()>
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: public unary_function<_Cp*, _Rp>
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template <class _Rp, class _Cp>
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struct __weak_result_type<_Rp (_Cp::*)() const>
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: public unary_function<const _Cp*, _Rp>
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template <class _Rp, class _Cp>
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struct __weak_result_type<_Rp (_Cp::*)() volatile>
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: public unary_function<volatile _Cp*, _Rp>
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template <class _Rp, class _Cp>
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struct __weak_result_type<_Rp (_Cp::*)() const volatile>
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: public unary_function<const volatile _Cp*, _Rp>
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template <class _Rp, class _A1, class _A2>
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struct __weak_result_type<_Rp (_A1, _A2)>
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: public binary_function<_A1, _A2, _Rp>
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template <class _Rp, class _A1, class _A2>
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struct __weak_result_type<_Rp (*)(_A1, _A2)>
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: public binary_function<_A1, _A2, _Rp>
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template <class _Rp, class _A1, class _A2>
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struct __weak_result_type<_Rp (&)(_A1, _A2)>
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: public binary_function<_A1, _A2, _Rp>
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template <class _Rp, class _Cp, class _A1>
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struct __weak_result_type<_Rp (_Cp::*)(_A1)>
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: public binary_function<_Cp*, _A1, _Rp>
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template <class _Rp, class _Cp, class _A1>
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struct __weak_result_type<_Rp (_Cp::*)(_A1) const>
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: public binary_function<const _Cp*, _A1, _Rp>
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template <class _Rp, class _Cp, class _A1>
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struct __weak_result_type<_Rp (_Cp::*)(_A1) volatile>
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: public binary_function<volatile _Cp*, _A1, _Rp>
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template <class _Rp, class _Cp, class _A1>
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struct __weak_result_type<_Rp (_Cp::*)(_A1) const volatile>
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: public binary_function<const volatile _Cp*, _A1, _Rp>
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// 3 or more arguments
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template <class _Rp, class _A1, class _A2, class _A3>
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struct __weak_result_type<_Rp (_A1, _A2, _A3)>
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typedef _Rp result_type;
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template <class _Rp, class _A1, class _A2, class _A3>
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struct __weak_result_type<_Rp (&)(_A1, _A2, _A3)>
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typedef _Rp result_type;
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template <class _Rp, class _A1, class _A2, class _A3>
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struct __weak_result_type<_Rp (*)(_A1, _A2, _A3)>
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typedef _Rp result_type;
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template <class _Rp, class _Cp, class _A1, class _A2>
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struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2)>
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typedef _Rp result_type;
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template <class _Rp, class _Cp, class _A1, class _A2>
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struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2) const>
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typedef _Rp result_type;
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template <class _Rp, class _Cp, class _A1, class _A2>
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struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2) volatile>
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typedef _Rp result_type;
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// template <class _Tp, bool _HasResultType>
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// struct ________ref_return0 // _HasResultType is true
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// typedef typename _Tp::result_type type;
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// template <class _Tp>
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// struct ________ref_return0<_Tp, false>
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// typedef void type;
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// template <class _Tp, bool _IsClass>
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// struct ____ref_return0 // _IsClass is true
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// : public ________ref_return0<_Tp, __has_result_type<typename remove_cv<_Tp>::type>::value>
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// template <class _Tp, bool _HasResultType>
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// struct ______ref_return0 // _HasResultType is true
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// typedef typename __callable_type<_Tp>::result_type type;
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// template <class _Tp>
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// struct ______ref_return0<_Tp, false> // pointer to member data
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// typedef void type;
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// template <class _Tp>
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// struct ____ref_return0<_Tp, false>
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// : public ______ref_return0<typename remove_cv<_Tp>::type,
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// __has_result_type<__callable_type<typename remove_cv<_Tp>::type> >::value>
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// template <class _Tp>
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// struct __ref_return0
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// : public ____ref_return0<typename remove_reference<_Tp>::type,
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// is_class<typename remove_reference<_Tp>::type>::value>
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// template <class _Tp, bool _IsClass, class _A0>
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// struct ____ref_return1 // _IsClass is true
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// typedef typename result_of<_Tp(_A0)>::type type;
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// template <class _Tp, bool _HasResultType, class _A0>
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// struct ______ref_return1 // _HasResultType is true
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// typedef typename __callable_type<_Tp>::result_type type;
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// template <class _Tp, class _A0, bool>
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// struct __ref_return1_member_data1;
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// template <class _Rp, class _Cp, class _A0>
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// struct __ref_return1_member_data1<_Rp _Cp::*, _A0, true>
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// typedef typename __apply_cv<_A0, _Rp>::type& type;
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// template <class _Rp, class _Cp, class _A0>
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// struct __ref_return1_member_data1<_Rp _Cp::*, _A0, false>
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// typedef typename __apply_cv<decltype(*__a), _Rp>::type& type;
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// template <class _Tp, class _A0>
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// struct __ref_return1_member_data;
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// template <class _Rp, class _Cp, class _A0>
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// struct __ref_return1_member_data<_Rp _Cp::*, _A0>
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// : public __ref_return1_member_data1<_Rp _Cp::*, _A0,
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// is_same<typename remove_cv<_Cp>::type,
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// typename remove_cv<typename remove_reference<_A0>::type>::type>::value>
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// template <class _Tp, class _A0>
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// struct ______ref_return1<_Tp, false, _A0> // pointer to member data
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// : public __ref_return1_member_data<typename remove_cv<_Tp>::type, _A0>
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// template <class _Tp, class _A0>
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// struct ____ref_return1<_Tp, false, _A0>
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// : public ______ref_return1<typename remove_cv<_Tp>::type,
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// __has_result_type<__callable_type<typename remove_cv<_Tp>::type> >::value, _A0>
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// template <class _Tp, class _A0>
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// struct __ref_return1
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// : public ____ref_return1<typename remove_reference<_Tp>::type,
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// is_class<typename remove_reference<_Tp>::type>::value, _A0>
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// template <class _Tp, bool _IsClass, class _A0, class _A1>
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// struct ____ref_return2 // _IsClass is true
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// typedef typename result_of<_Tp(_A0, _A1)>::type type;
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// template <class _Tp, bool _HasResultType, class _A0, class _A1>
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// struct ______ref_return2 // _HasResultType is true
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// typedef typename __callable_type<_Tp>::result_type type;
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// template <class _Tp>
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// struct ______ref_return2<_Tp, false, class _A0, class _A1> // pointer to member data
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// static_assert(sizeof(_Tp) == 0, "An attempt has been made to `call` a pointer"
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// " to member data with too many arguments.");
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// template <class _Tp, class _A0, class _A1>
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// struct ____ref_return2<_Tp, false, _A0, _A1>
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// : public ______ref_return2<typename remove_cv<_Tp>::type,
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// __has_result_type<__callable_type<typename remove_cv<_Tp>::type> >::value, _A0, _A1>
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// template <class _Tp, class _A0, class _A1>
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// struct __ref_return2
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// : public ____ref_return2<typename remove_reference<_Tp>::type,
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// is_class<typename remove_reference<_Tp>::type>::value, _A0, _A1>
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// template <class _Tp, bool _IsClass, class _A0, class _A1, class _A2>
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// struct ____ref_return3 // _IsClass is true
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// typedef typename result_of<_Tp(_A0, _A1, _A2)>::type type;
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// template <class _Tp, bool _HasResultType, class _A0, class _A1, class _A2>
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// struct ______ref_return3 // _HasResultType is true
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// typedef typename __callable_type<_Tp>::result_type type;
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// template <class _Tp>
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// struct ______ref_return3<_Tp, false, class _A0, class _A1, class _A2> // pointer to member data
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// static_assert(sizeof(_Tp) == 0, "An attempt has been made to `call` a pointer"
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// " to member data with too many arguments.");
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// template <class _Tp, class _A0, class _A1, class _A2>
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// struct ____ref_return3<_Tp, false, _A0, _A1, _A2>
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// : public ______ref_return3<typename remove_cv<_Tp>::type,
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// __has_result_type<__callable_type<typename remove_cv<_Tp>::type> >::value, _A0, _A1, _A2>
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// template <class _Tp, class _A0, class _A1, class _A2>
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// struct __ref_return3
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// : public ____ref_return3<typename remove_reference<_Tp>::type,
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// is_class<typename remove_reference<_Tp>::type>::value, _A0, _A1, _A2>
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template <class _Rp, class _Tp, class _T1>
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inline _LIBCPP_INLINE_VISIBILITY
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is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
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__invoke(_Rp (_Tp::*__f)(), _T1& __t1)
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return (__t1.*__f)();
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template <class _Rp, class _Tp, class _T1, class _A0>
429
inline _LIBCPP_INLINE_VISIBILITY
432
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
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__invoke(_Rp (_Tp::*__f)(_A0), _T1& __t1, _A0& __a0)
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return (__t1.*__f)(__a0);
440
template <class _Rp, class _Tp, class _T1, class _A0, class _A1>
441
inline _LIBCPP_INLINE_VISIBILITY
444
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
447
__invoke(_Rp (_Tp::*__f)(_A0, _A1), _T1& __t1, _A0& __a0, _A1& __a1)
449
return (__t1.*__f)(__a0, __a1);
452
template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2>
453
inline _LIBCPP_INLINE_VISIBILITY
456
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
459
__invoke(_Rp (_Tp::*__f)(_A0, _A1, _A2), _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2)
461
return (__t1.*__f)(__a0, __a1, __a2);
464
template <class _Rp, class _Tp, class _T1>
465
inline _LIBCPP_INLINE_VISIBILITY
468
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
471
__invoke(_Rp (_Tp::*__f)() const, _T1& __t1)
473
return (__t1.*__f)();
476
template <class _Rp, class _Tp, class _T1, class _A0>
477
inline _LIBCPP_INLINE_VISIBILITY
480
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
483
__invoke(_Rp (_Tp::*__f)(_A0) const, _T1& __t1, _A0& __a0)
485
return (__t1.*__f)(__a0);
488
template <class _Rp, class _Tp, class _T1, class _A0, class _A1>
489
inline _LIBCPP_INLINE_VISIBILITY
492
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
495
__invoke(_Rp (_Tp::*__f)(_A0, _A1) const, _T1& __t1, _A0& __a0, _A1& __a1)
497
return (__t1.*__f)(__a0, __a1);
500
template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2>
501
inline _LIBCPP_INLINE_VISIBILITY
504
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
507
__invoke(_Rp (_Tp::*__f)(_A0, _A1, _A2) const, _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2)
509
return (__t1.*__f)(__a0, __a1, __a2);
512
template <class _Rp, class _Tp, class _T1>
513
inline _LIBCPP_INLINE_VISIBILITY
516
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
519
__invoke(_Rp (_Tp::*__f)() volatile, _T1& __t1)
521
return (__t1.*__f)();
524
template <class _Rp, class _Tp, class _T1, class _A0>
525
inline _LIBCPP_INLINE_VISIBILITY
528
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
531
__invoke(_Rp (_Tp::*__f)(_A0) volatile, _T1& __t1, _A0& __a0)
533
return (__t1.*__f)(__a0);
536
template <class _Rp, class _Tp, class _T1, class _A0, class _A1>
537
inline _LIBCPP_INLINE_VISIBILITY
540
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
543
__invoke(_Rp (_Tp::*__f)(_A0, _A1) volatile, _T1& __t1, _A0& __a0, _A1& __a1)
545
return (__t1.*__f)(__a0, __a1);
548
template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2>
549
inline _LIBCPP_INLINE_VISIBILITY
552
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
555
__invoke(_Rp (_Tp::*__f)(_A0, _A1, _A2) volatile, _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2)
557
return (__t1.*__f)(__a0, __a1, __a2);
560
template <class _Rp, class _Tp, class _T1>
561
inline _LIBCPP_INLINE_VISIBILITY
564
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
567
__invoke(_Rp (_Tp::*__f)() const volatile, _T1& __t1)
569
return (__t1.*__f)();
572
template <class _Rp, class _Tp, class _T1, class _A0>
573
inline _LIBCPP_INLINE_VISIBILITY
576
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
579
__invoke(_Rp (_Tp::*__f)(_A0) const volatile, _T1& __t1, _A0& __a0)
581
return (__t1.*__f)(__a0);
584
template <class _Rp, class _Tp, class _T1, class _A0, class _A1>
585
inline _LIBCPP_INLINE_VISIBILITY
588
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
591
__invoke(_Rp (_Tp::*__f)(_A0, _A1) const volatile, _T1& __t1, _A0& __a0, _A1& __a1)
593
return (__t1.*__f)(__a0, __a1);
596
template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2>
597
inline _LIBCPP_INLINE_VISIBILITY
600
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
603
__invoke(_Rp (_Tp::*__f)(_A0, _A1, _A2) const volatile, _T1& __t1, _A0& __a0, _A1& __a1, _A2& __a2)
605
return (__t1.*__f)(__a0, __a1, __a2);
610
template <class _Rp, class _Tp, class _T1>
611
inline _LIBCPP_INLINE_VISIBILITY
614
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
617
__invoke(_Rp (_Tp::*__f)(), _T1 __t1)
619
return ((*__t1).*__f)();
622
template <class _Rp, class _Tp, class _T1, class _A0>
623
inline _LIBCPP_INLINE_VISIBILITY
626
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
629
__invoke(_Rp (_Tp::*__f)(_A0), _T1 __t1, _A0& __a0)
631
return ((*__t1).*__f)(__a0);
634
template <class _Rp, class _Tp, class _T1, class _A0, class _A1>
635
inline _LIBCPP_INLINE_VISIBILITY
638
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
641
__invoke(_Rp (_Tp::*__f)(_A0, _A1), _T1 __t1, _A0& __a0, _A1& __a1)
643
return ((*__t1).*__f)(__a0, __a1);
646
template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2>
647
inline _LIBCPP_INLINE_VISIBILITY
650
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
653
__invoke(_Rp (_Tp::*__f)(_A0, _A1, _A2), _T1 __t1, _A0& __a0, _A1& __a1, _A2& __a2)
655
return ((*__t1).*__f)(__a0, __a1, __a2);
658
template <class _Rp, class _Tp, class _T1>
659
inline _LIBCPP_INLINE_VISIBILITY
662
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
665
__invoke(_Rp (_Tp::*__f)() const, _T1 __t1)
667
return ((*__t1).*__f)();
670
template <class _Rp, class _Tp, class _T1, class _A0>
671
inline _LIBCPP_INLINE_VISIBILITY
674
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
677
__invoke(_Rp (_Tp::*__f)(_A0) const, _T1 __t1, _A0& __a0)
679
return ((*__t1).*__f)(__a0);
682
template <class _Rp, class _Tp, class _T1, class _A0, class _A1>
683
inline _LIBCPP_INLINE_VISIBILITY
686
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
689
__invoke(_Rp (_Tp::*__f)(_A0, _A1) const, _T1 __t1, _A0& __a0, _A1& __a1)
691
return ((*__t1).*__f)(__a0, __a1);
694
template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2>
695
inline _LIBCPP_INLINE_VISIBILITY
698
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
701
__invoke(_Rp (_Tp::*__f)(_A0, _A1, _A2) const, _T1 __t1, _A0& __a0, _A1& __a1, _A2& __a2)
703
return ((*__t1).*__f)(__a0, __a1, __a2);
706
template <class _Rp, class _Tp, class _T1>
707
inline _LIBCPP_INLINE_VISIBILITY
710
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
713
__invoke(_Rp (_Tp::*__f)() volatile, _T1 __t1)
715
return ((*__t1).*__f)();
718
template <class _Rp, class _Tp, class _T1, class _A0>
719
inline _LIBCPP_INLINE_VISIBILITY
722
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
725
__invoke(_Rp (_Tp::*__f)(_A0) volatile, _T1 __t1, _A0& __a0)
727
return ((*__t1).*__f)(__a0);
730
template <class _Rp, class _Tp, class _T1, class _A0, class _A1>
731
inline _LIBCPP_INLINE_VISIBILITY
734
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
737
__invoke(_Rp (_Tp::*__f)(_A0, _A1) volatile, _T1 __t1, _A0& __a0, _A1& __a1)
739
return ((*__t1).*__f)(__a0, __a1);
742
template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2>
743
inline _LIBCPP_INLINE_VISIBILITY
746
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
749
__invoke(_Rp (_Tp::*__f)(_A0, _A1, _A2) volatile, _T1 __t1, _A0& __a0, _A1& __a1, _A2& __a2)
751
return ((*__t1).*__f)(__a0, __a1, __a2);
754
template <class _Rp, class _Tp, class _T1>
755
inline _LIBCPP_INLINE_VISIBILITY
758
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
761
__invoke(_Rp (_Tp::*__f)() const volatile, _T1 __t1)
763
return ((*__t1).*__f)();
766
template <class _Rp, class _Tp, class _T1, class _A0>
767
inline _LIBCPP_INLINE_VISIBILITY
770
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
773
__invoke(_Rp (_Tp::*__f)(_A0) const volatile, _T1 __t1, _A0& __a0)
775
return ((*__t1).*__f)(__a0);
778
template <class _Rp, class _Tp, class _T1, class _A0, class _A1>
779
inline _LIBCPP_INLINE_VISIBILITY
782
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
785
__invoke(_Rp (_Tp::*__f)(_A0, _A1) const volatile, _T1 __t1, _A0& __a0, _A1& __a1)
787
return ((*__t1).*__f)(__a0, __a1);
790
template <class _Rp, class _Tp, class _T1, class _A0, class _A1, class _A2>
791
inline _LIBCPP_INLINE_VISIBILITY
794
!is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
797
__invoke(_Rp (_Tp::*__f)(_A0, _A1, _A2) const volatile, _T1 __t1, _A0& __a0, _A1& __a1, _A2& __a2)
799
return ((*__t1).*__f)(__a0, __a1, __a2);
804
template <class _Rp, class _Tp, class _T1>
805
inline _LIBCPP_INLINE_VISIBILITY
808
is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
809
typename __apply_cv<_T1, _Rp>::type&
811
__invoke(_Rp _Tp::* __f, _T1& __t1)
816
template <class _Rp, class _Tp>
817
inline _LIBCPP_INLINE_VISIBILITY
823
// template <class _Dp, class _Rp, class _Tp, class _T1>
824
// inline _LIBCPP_INLINE_VISIBILITY
825
// typename enable_if
827
// is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
828
// typename __ref_return1<_Rp _Tp::*, _T1>::type
830
// __invoke(_Rp _Tp::* __f, _T1& __t1)
837
template <class _T1, class _Rp, bool>
842
template <class _T1, class _Rp>
843
struct __4th_helper<_T1, _Rp, true>
845
typedef typename __apply_cv<decltype(*_VSTD::declval<_T1>()), _Rp>::type type;
848
template <class _Rp, class _Tp, class _T1>
849
inline _LIBCPP_INLINE_VISIBILITY
850
typename __4th_helper<_T1, _Rp,
852
typename remove_reference<_T1>::type
855
__invoke(_Rp _Tp::* __f, _T1& __t1)
860
// template <class _Dp, class _Rp, class _Tp, class _T1>
861
// inline _LIBCPP_INLINE_VISIBILITY
862
// typename enable_if
864
// !is_base_of<_Tp, typename remove_reference<_T1>::type>::value,
865
// typename __ref_return1<_Rp _Tp::*, _T1>::type
867
// __invoke(_Rp _Tp::* __f, _T1 __t1)
869
// return (*__t1).*__f;
875
inline _LIBCPP_INLINE_VISIBILITY
876
decltype(declval<_Fp>()())
882
template <class _Fp, class _A0>
883
inline _LIBCPP_INLINE_VISIBILITY
884
decltype(declval<_Fp>()(declval<_A0&>()))
885
__invoke(_Fp __f, _A0& __a0)
890
template <class _Fp, class _A0, class _A1>
891
inline _LIBCPP_INLINE_VISIBILITY
892
decltype(declval<_Fp>()(declval<_A0&>(), declval<_A1&>()))
893
__invoke(_Fp __f, _A0& __a0, _A1& __a1)
895
return __f(__a0, __a1);
898
template <class _Fp, class _A0, class _A1, class _A2>
899
inline _LIBCPP_INLINE_VISIBILITY
900
decltype(declval<_Fp>()(declval<_A0&>(), declval<_A1&>(), declval<_A2&>()))
901
__invoke(_Fp __f, _A0& __a0, _A1& __a1, _A2& __a2)
903
return __f(__a0, __a1, __a2);
906
// template <class _Rp, class _Fp>
907
// inline _LIBCPP_INLINE_VISIBILITY
909
// __invoke(_Fp& __f)
914
// template <class _Rp, class _Fp, class _A0>
915
// inline _LIBCPP_INLINE_VISIBILITY
916
// typename enable_if
918
// !is_member_pointer<_Fp>::value,
921
// __invoke(_Fp& __f, _A0& __a0)
926
// template <class _Rp, class _Fp, class _A0, class _A1>
927
// inline _LIBCPP_INLINE_VISIBILITY
929
// __invoke(_Fp& __f, _A0& __a0, _A1& __a1)
931
// return __f(__a0, __a1);
934
// template <class _Rp, class _Fp, class _A0, class _A1, class _A2>
935
// inline _LIBCPP_INLINE_VISIBILITY
937
// __invoke(_Fp& __f, _A0& __a0, _A1& __a1, _A2& __a2)
939
// return __f(__a0, __a1, __a2);
946
struct __two {char __lx; char __lxx;};
947
template <class _Up> static __two __test(...);
948
template <class _Up> static char __test(typename _Up::type* = 0);
950
static const bool value = sizeof(__test<_Tp>(0)) == 1;
953
template <class _Fp, bool = __has_result_type<__weak_result_type<_Fp> >::value>
954
struct __invoke_return
956
typedef typename __weak_result_type<_Fp>::result_type type;
960
struct __invoke_return<_Fp, false>
962
typedef decltype(__invoke(_VSTD::declval<_Fp>())) type;
965
template <class _Tp, class _A0>
966
struct __invoke_return0
968
typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>())) type;
971
template <class _Rp, class _Tp, class _A0>
972
struct __invoke_return0<_Rp _Tp::*, _A0>
974
typedef typename __apply_cv<_A0, _Rp>::type& type;
977
template <class _Rp, class _Tp, class _A0>
978
struct __invoke_return0<_Rp _Tp::*, _A0*>
980
typedef typename __apply_cv<_A0, _Rp>::type& type;
983
template <class _Tp, class _A0, class _A1>
984
struct __invoke_return1
986
typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>(),
987
_VSTD::declval<_A1>())) type;
990
template <class _Tp, class _A0, class _A1, class _A2>
991
struct __invoke_return2
993
typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_A0>(),
994
_VSTD::declval<_A1>(),
995
_VSTD::declval<_A2>())) type;
999
class _LIBCPP_TYPE_VIS reference_wrapper
1000
: public __weak_result_type<_Tp>
1009
// construct/copy/destroy
1010
_LIBCPP_INLINE_VISIBILITY reference_wrapper(type& __f) : __f_(&__f) {}
1013
_LIBCPP_INLINE_VISIBILITY operator type& () const {return *__f_;}
1014
_LIBCPP_INLINE_VISIBILITY type& get() const {return *__f_;}
1018
_LIBCPP_INLINE_VISIBILITY
1019
typename __invoke_return<type&>::type
1022
return __invoke(get());
1025
template <class _A0>
1026
_LIBCPP_INLINE_VISIBILITY
1027
typename __invoke_return0<type&, _A0>::type
1028
operator() (_A0& __a0) const
1030
return __invoke(get(), __a0);
1033
template <class _A0, class _A1>
1034
_LIBCPP_INLINE_VISIBILITY
1035
typename __invoke_return1<type&, _A0, _A1>::type
1036
operator() (_A0& __a0, _A1& __a1) const
1038
return __invoke(get(), __a0, __a1);
1041
template <class _A0, class _A1, class _A2>
1042
_LIBCPP_INLINE_VISIBILITY
1043
typename __invoke_return2<type&, _A0, _A1, _A2>::type
1044
operator() (_A0& __a0, _A1& __a1, _A2& __a2) const
1046
return __invoke(get(), __a0, __a1, __a2);
1050
template <class _Tp> struct ____is_reference_wrapper : public false_type {};
1051
template <class _Tp> struct ____is_reference_wrapper<reference_wrapper<_Tp> > : public true_type {};
1052
template <class _Tp> struct __is_reference_wrapper
1053
: public ____is_reference_wrapper<typename remove_cv<_Tp>::type> {};
1055
template <class _Tp>
1056
inline _LIBCPP_INLINE_VISIBILITY
1057
reference_wrapper<_Tp>
1060
return reference_wrapper<_Tp>(__t);
1063
template <class _Tp>
1064
inline _LIBCPP_INLINE_VISIBILITY
1065
reference_wrapper<_Tp>
1066
ref(reference_wrapper<_Tp> __t)
1068
return ref(__t.get());
1071
template <class _Tp>
1072
inline _LIBCPP_INLINE_VISIBILITY
1073
reference_wrapper<const _Tp>
1074
cref(const _Tp& __t)
1076
return reference_wrapper<const _Tp>(__t);
1079
template <class _Tp>
1080
inline _LIBCPP_INLINE_VISIBILITY
1081
reference_wrapper<const _Tp>
1082
cref(reference_wrapper<_Tp> __t)
1084
return cref(__t.get());
1087
#endif // _LIBCPP_FUNCTIONAL_BASE_03