mirror of git://gcc.gnu.org/git/gcc.git
118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
// { dg-do run { target c++11 } }
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// Copyright (C) 2008-2018 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// 20.8.3 Class template duration [time.duration]
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#include <chrono>
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#include <type_traits>
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#include <testsuite_hooks.h>
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template<typename T>
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struct type_emulator
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{
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type_emulator() : i(T(0)) { }
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type_emulator(T j) : i(j) { }
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type_emulator(const type_emulator& e) : i(e.i) { }
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type_emulator& operator*=(type_emulator a)
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{ i *= a.i; return *this; }
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type_emulator& operator+=(type_emulator a)
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{ i += a.i; return *this; }
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operator T () { return i; }
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T i;
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};
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template<typename T>
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bool operator==(type_emulator<T> a, type_emulator<T> b)
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{ return a.i == b.i; }
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template<typename T>
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bool operator<(type_emulator<T> a, type_emulator<T> b)
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{ return a.i < b.i; }
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template<typename T>
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type_emulator<T> operator+(type_emulator<T> a, type_emulator<T> b)
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{ return a += b; }
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template<typename T>
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type_emulator<T> operator*(type_emulator<T> a, type_emulator<T> b)
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{ return a *= b; }
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namespace std
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{
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template<typename T, typename U>
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struct common_type<type_emulator<T>, U>
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{ typedef typename common_type<T,U>::type type; };
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template<typename T, typename U>
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struct common_type<U, type_emulator<T>>
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{ typedef typename common_type<U,T>::type type; };
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template<typename T, typename U>
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struct common_type<type_emulator<T>, type_emulator<U>>
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{ typedef typename common_type<T,U>::type type; };
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namespace chrono
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{
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template<typename T>
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struct treat_as_floating_point<type_emulator<T>>
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: is_floating_point<T>
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{ };
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}
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}
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typedef type_emulator<int> int_emulator;
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typedef type_emulator<double> dbl_emulator;
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// 20.8.3.1 duration constructors [time.duration.cons]
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void
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test01()
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{
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using namespace std::chrono;
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duration<int> d0(3);
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duration<int> d0_copy(d0);
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VERIFY(d0_copy.count() == d0.count());
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duration<int, std::milli> d1(5);
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duration<int, std::micro> d1_copy(d1);
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VERIFY(d1.count() * 1000 == d1_copy.count());
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duration<double, std::micro> d2(8.0);
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duration<double, std::milli> d2_copy(d2);
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VERIFY(d2.count() == d2_copy.count() * 1000.0);
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duration<int_emulator, std::milli> d3(5);
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duration<int_emulator, std::micro> d3_copy(d3);
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VERIFY(d3.count() * 1000 == d3_copy.count());
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duration<dbl_emulator, std::micro> d4(5.0);
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duration<dbl_emulator, std::milli> d4_copy(d4);
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VERIFY(d4.count() == d4_copy.count() * dbl_emulator(1000.0));
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}
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int
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main()
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{
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test01();
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return 0;
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}
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