op_local_days.pass.cpp (1996B)
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 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 10 11 // <chrono> 12 // class year_month_day_last; 13 14 // constexpr operator local_days() const noexcept; 15 // Returns: local_days{sys_days{*this}.time_since_epoch()}. 16 17 #include <chrono> 18 #include <type_traits> 19 #include <cassert> 20 21 #include "test_macros.h" 22 23 int main() 24 { 25 using year = std::chrono::year; 26 using month_day_last = std::chrono::month_day_last; 27 using year_month_day_last = std::chrono::year_month_day_last; 28 using local_days = std::chrono::local_days; 29 using days = std::chrono::days; 30 31 ASSERT_NOEXCEPT( static_cast<local_days>(std::declval<const year_month_day_last>())); 32 ASSERT_SAME_TYPE(local_days, decltype(static_cast<local_days>(std::declval<const year_month_day_last>()))); 33 34 { // Last day in Jan 1970 was the 31st 35 constexpr year_month_day_last ymdl{year{1970}, month_day_last{std::chrono::January}}; 36 constexpr local_days sd{ymdl}; 37 38 static_assert(sd.time_since_epoch() == days{30}, ""); 39 } 40 41 { 42 constexpr year_month_day_last ymdl{year{2000}, month_day_last{std::chrono::January}}; 43 constexpr local_days sd{ymdl}; 44 45 static_assert(sd.time_since_epoch() == days{10957+30}, ""); 46 } 47 48 { 49 constexpr year_month_day_last ymdl{year{1940}, month_day_last{std::chrono::January}}; 50 constexpr local_days sd{ymdl}; 51 52 static_assert(sd.time_since_epoch() == days{-10957+29}, ""); 53 } 54 55 { 56 year_month_day_last ymdl{year{1939}, month_day_last{std::chrono::November}}; 57 local_days sd{ymdl}; 58 59 assert(sd.time_since_epoch() == days{-(10957+33)}); 60 } 61 }