libcxx/include/__cxx03/__functional/binary_function.h

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP___CXX03___FUNCTIONAL_BINARY_FUNCTION_H
#define _LIBCPP___CXX03___FUNCTIONAL_BINARY_FUNCTION_H

#include <__cxx03/__config>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _Arg1, class _Arg2, class _Result>
struct _LIBCPP_TEMPLATE_VIS binary_function {
  typedef _Arg1 first_argument_type;
  typedef _Arg2 second_argument_type;
  typedef _Result result_type;
};

template <class _Arg1, class _Arg2, class _Result>
struct __binary_function_keep_layout_base {
  using first_argument_type  = _Arg1;
  using second_argument_type = _Arg2;
  using result_type          = _Result;
};

_LIBCPP_DIAGNOSTIC_PUSH
_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
template <class _Arg1, class _Arg2, class _Result>
using __binary_function = binary_function<_Arg1, _Arg2, _Result>;
_LIBCPP_DIAGNOSTIC_POP

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___CXX03___FUNCTIONAL_BINARY_FUNCTION_H