40 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <chrono>10 11// duration12 13// template <class Rep2, class Period2>14// duration(const duration<Rep2, Period2>& d);15 16// exact conversions allowed for integral reps17 18#include <chrono>19#include <cassert>20 21#include "test_macros.h"22 23int main(int, char**)24{25 {26 std::chrono::milliseconds ms(1);27 std::chrono::microseconds us = ms;28 assert(us.count() == 1000);29 }30#if TEST_STD_VER >= 1131 {32 constexpr std::chrono::milliseconds ms(1);33 constexpr std::chrono::microseconds us = ms;34 static_assert(us.count() == 1000, "");35 }36#endif37 38 return 0;39}40