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

// { dg-require-cstdint "" }

// Copyright (C) 2008, 2009 Free Software Foundation

//

// 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/>.

// 20.8.3 Class template duration [time.duration]

#include <chrono>

#include <type_traits>

#include <testsuite_hooks.h>

template<typename T>

struct type_emulator

{

  type_emulator() : i(T(0)) { }

  type_emulator(T j) : i(j) { }

  type_emulator(const type_emulator& e) : i(e.i) { }

  type_emulator& operator*=(type_emulator a)

  { i *= a.i; return *this; }

  type_emulator& operator+=(type_emulator a)

  { i += a.i; return *this; }

  operator T () { return i; }

  T i;

};

template<typename T>

bool operator==(type_emulator<T> a, type_emulator<T> b)

{ return a.i == b.i; }

template<typename T>

bool operator<(type_emulator<T> a, type_emulator<T> b)

{ return a.i < b.i; }

template<typename T>

type_emulator<T> operator+(type_emulator<T> a, type_emulator<T> b)

{ return a += b; }

template<typename T>

type_emulator<T> operator*(type_emulator<T> a, type_emulator<T> b)

{ return a *= b; }

namespace std

{

  template<typename T, typename U>

  struct common_type<type_emulator<T>, U>

  { typedef typename common_type<T,U>::type type; };

  template<typename T, typename U>

  struct common_type<U, type_emulator<T>>

  { typedef typename common_type<U,T>::type type; };

  template<typename T, typename U>

  struct common_type<type_emulator<T>, type_emulator<U>>

  { typedef typename common_type<T,U>::type type; };

  namespace chrono

  {

    template<typename T>

    struct treat_as_floating_point<type_emulator<T>>

    : is_floating_point<T>

    { };

  }

}

typedef type_emulator<int> int_emulator;

typedef type_emulator<double> dbl_emulator;

// 20.8.3.1 duration constructors [time.duration.cons]

void

test01()

{

  bool test __attribute__((unused)) = true;

  using namespace std::chrono;

  duration<int> d0(3);

  duration<int> d0_copy(d0);

  VERIFY(d0_copy.count() == d0.count());

  duration<int, std::milli> d1(5);

  duration<int, std::micro> d1_copy(d1);

  VERIFY(d1.count() * 1000 == d1_copy.count());

  duration<double, std::micro> d2(8.0);

  duration<double, std::milli> d2_copy(d2);

  VERIFY(d2.count() == d2_copy.count() * 1000.0);

  duration<int_emulator, std::milli> d3(5);

  duration<int_emulator, std::micro> d3_copy(d3);

  VERIFY(d3.count() * 1000 == d3_copy.count());

  duration<dbl_emulator, std::micro> d4(5.0);

  duration<dbl_emulator, std::milli> d4_copy(d4);

  VERIFY(d4.count() == d4_copy.count() * dbl_emulator(1000.0));

}

int

main()

{

  test01();

  return 0;

}