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// 2001-06-18  Benjamin Kosnik  <bkoz@redhat.com>

// Copyright (C) 2001, 2009 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

// 20.3.3 Comparisons

#include <functional>

class gnu_obj

{

  int i;

public:

  gnu_obj(int arg = 0): i(arg) { }

  bool operator==(const gnu_obj& rhs) const { return i == rhs.i; }

  bool operator!=(const gnu_obj& rhs) const { return i != rhs.i; }

  bool operator<(const gnu_obj& rhs) const { return i < rhs.i; }

};

template<typename T>

  struct gnu_t

  {

    bool b;

  public:

    gnu_t(bool arg = 0): b(arg) { }

    bool operator==(const gnu_t& rhs) const { return b == rhs.b; }

    bool operator!=(const gnu_t& rhs) const { return b != rhs.b; }

    bool operator<(const gnu_t& rhs) const { return b == rhs.b; }

  };

template struct std::not_equal_to<void*>;

template struct std::not_equal_to<gnu_obj>;

template struct std::not_equal_to<gnu_t<long> >;

int main()

{

  return 0;

}