41 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// inexact conversions allowed for floating point reps17 18#include <chrono>19#include <cassert>20#include <ratio>21 22#include "test_macros.h"23 24int main(int, char**)25{26 {27 std::chrono::duration<double, std::micro> us(1);28 std::chrono::duration<double, std::milli> ms = us;29 assert(ms.count() == 1./1000);30 }31#if TEST_STD_VER >= 1132 {33 constexpr std::chrono::duration<double, std::micro> us(1);34 constexpr std::chrono::duration<double, std::milli> ms = us;35 static_assert(ms.count() == 1./1000, "");36 }37#endif38 39 return 0;40}41