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1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___FUNCTIONAL_BINDER2ND_H11#define _LIBCPP___FUNCTIONAL_BINDER2ND_H12 13#include <__config>14#include <__functional/unary_function.h>15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)17# pragma GCC system_header18#endif19 20_LIBCPP_BEGIN_NAMESPACE_STD21 22#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)23 24template <class _Operation>25class _LIBCPP_DEPRECATED_IN_CXX11 binder2nd26 : public __unary_function<typename _Operation::first_argument_type, typename _Operation::result_type> {27protected:28 _Operation op;29 typename _Operation::second_argument_type value;30 31public:32 _LIBCPP_HIDE_FROM_ABI binder2nd(const _Operation& __x, const typename _Operation::second_argument_type __y)33 : op(__x), value(__y) {}34 _LIBCPP_HIDE_FROM_ABI typename _Operation::result_type35 operator()(typename _Operation::first_argument_type& __x) const {36 return op(__x, value);37 }38 _LIBCPP_HIDE_FROM_ABI typename _Operation::result_type39 operator()(const typename _Operation::first_argument_type& __x) const {40 return op(__x, value);41 }42};43 44template <class _Operation, class _Tp>45_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_HIDE_FROM_ABI binder2nd<_Operation>46bind2nd(const _Operation& __op, const _Tp& __x) {47 return binder2nd<_Operation>(__op, __x);48}49 50#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)51 52_LIBCPP_END_NAMESPACE_STD53 54#endif // _LIBCPP___FUNCTIONAL_BINDER2ND_H55