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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14 10 11 // <chrono> 12 13 // ceil 14 15 // template <class ToDuration, class Rep, class Period> 16 // constexpr 17 // ToDuration 18 // ceil(const duration<Rep, Period>& d); 19 20 #include <chrono> 21 #include <type_traits> 22 #include <cassert> 23 24 #include "test_macros.h" 25 26 template <class ToDuration, class FromDuration> 27 void 28 test(const FromDuration& f, const ToDuration& d) 29 { 30 { 31 typedef decltype(std::chrono::ceil<ToDuration>(f)) R; 32 static_assert((std::is_same<R, ToDuration>::value), ""); 33 assert(std::chrono::ceil<ToDuration>(f) == d); 34 } 35 } 36 37 int main(int, char**) 38 { 39 // 7290000ms is 2 hours, 1 minute, and 30 seconds 40 test(std::chrono::milliseconds( 7290000), std::chrono::hours( 3)); 41 test(std::chrono::milliseconds(-7290000), std::chrono::hours(-2)); 42 test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 122)); 43 test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-121)); 44 45 { 46 // 9000000ms is 2 hours and 30 minutes 47 constexpr std::chrono::hours h1 = std::chrono::ceil<std::chrono::hours>(std::chrono::milliseconds(9000000)); 48 static_assert(h1.count() == 3, ""); 49 constexpr std::chrono::hours h2 = std::chrono::ceil<std::chrono::hours>(std::chrono::milliseconds(-9000000)); 50 static_assert(h2.count() == -2, ""); 51 } 52 53 return 0; 54 } 55