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 // UNSUPPORTED: c++03, c++11, c++14, c++17 9 // <chrono> 10 11 // constexpr bool is_am(const hours& h) noexcept; 12 // Returns: 0h <= h && h <= 11h. 13 14 #include <chrono> 15 #include <cassert> 16 #include <utility> 17 18 #include "test_macros.h" 19 20 int main(int, char**) 21 { 22 using hours = std::chrono::hours; 23 ASSERT_SAME_TYPE(bool, decltype(std::chrono::is_am(std::declval<hours>()))); 24 ASSERT_NOEXCEPT( std::chrono::is_am(std::declval<hours>())); 25 26 static_assert( std::chrono::is_am(hours( 0)), ""); 27 static_assert( std::chrono::is_am(hours(11)), ""); 28 static_assert(!std::chrono::is_am(hours(12)), ""); 29 static_assert(!std::chrono::is_am(hours(23)), ""); 30 31 for (int i = 0; i < 12; ++i) 32 assert( std::chrono::is_am(hours(i))); 33 for (int i = 12; i < 24; ++i) 34 assert(!std::chrono::is_am(hours(i))); 35 36 return 0; 37 } 38