1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <chrono> 11 12// duration 13 14// static constexpr duration zero(); 15 16#include <chrono> 17#include <cassert> 18 19#include "../../rep.h" 20 21template <class D> 22void test() 23{ 24 { 25 typedef typename D::rep Rep; 26 Rep zero_rep = std::chrono::duration_values<Rep>::zero(); 27 assert(D::zero().count() == zero_rep); 28 } 29#ifndef _LIBCPP_HAS_NO_CONSTEXPR 30 { 31 typedef typename D::rep Rep; 32 constexpr Rep zero_rep = std::chrono::duration_values<Rep>::zero(); 33 static_assert(D::zero().count() == zero_rep, ""); 34 } 35#endif 36} 37 38int main() 39{ 40 test<std::chrono::duration<int> >(); 41 test<std::chrono::duration<Rep> >(); 42} 43