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// { dg-options "-std=gnu++0x" }

// Copyright (C) 2008, 2009, 2010 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/>.

#include <functional>

#include <type_traits>

#include <testsuite_hooks.h>

#include <testsuite_tr1.h>

using namespace __gnu_test;

bool test __attribute__((unused)) = true;

struct X

{

  typedef int result_type;

  X() : bar(17) {}

  int foo(float x)                   { return truncate_float(x); }

  int foo_c(float x)  const          { return truncate_float(x); }

  int foo_v(float x)  volatile       { return truncate_float(x); }

  int foo_cv(float x) const volatile { return truncate_float(x); }

  int operator()(float x)

  {

    return foo(x) + 1;

  }

  int operator()(float x) const

  {

    return foo_c(x) + 2;

  }

  int bar;

 private:

  X(const X&);

  X& operator=(const X&);

};

int seventeen() { return 17; }

struct get_seventeen

{

  typedef int result_type;

  int operator()() const { return 17; }

};

void test01()

{

  using std::ref;

  using std::cref;

  ::get_seventeen get_sev;

  ::X x;

  const float pi = 3.14;

  // Functions

  VERIFY(ref(truncate_float)(pi) == 3);

  VERIFY(ref(seventeen)() == 17);

  // Function pointers

  VERIFY(cref(&truncate_float)(pi) == 3);

  VERIFY(cref(&seventeen)() == 17);

  // Function objects

  VERIFY(ref(get_sev)() == 17);

  VERIFY(cref(get_sev)() == 17);

  VERIFY(ref(x)(pi) == 4);

  VERIFY(cref(x)(pi) == 5);

}

int main()

{

  test01();

  return 0;

}