| 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 | |
|---|
| 10 | // <chrono> |
|---|
| 11 | // class weekday; |
|---|
| 12 | |
|---|
| 13 | // constexpr weekday(const local_days& dp) noexcept; |
|---|
| 14 | // |
|---|
| 15 | // Effects: Constructs an object of type weekday by computing what day |
|---|
| 16 | // of the week corresponds to the local_days dp, and representing |
|---|
| 17 | // that day of the week in wd_ |
|---|
| 18 | // |
|---|
| 19 | // Remarks: For any value ymd of type year_month_day for which ymd.ok() is true, |
|---|
| 20 | // ymd == year_month_day{sys_days{ymd}} is true. |
|---|
| 21 | // |
|---|
| 22 | // [Example: |
|---|
| 23 | // If dp represents 1970-01-01, the constructed weekday represents Thursday by storing 4 in wd_. |
|---|
| 24 | // -end example] |
|---|
| 25 | |
|---|
| 26 | #include <chrono> |
|---|
| 27 | #include <cassert> |
|---|
| 28 | #include <type_traits> |
|---|
| 29 | #include <utility> |
|---|
| 30 | |
|---|
| 31 | #include "test_macros.h" |
|---|
| 32 | |
|---|
| 33 | int main(int, char**) |
|---|
| 34 | { |
|---|
| 35 | using local_days = std::chrono::local_days; |
|---|
| 36 | using days = std::chrono::days; |
|---|
| 37 | using weekday = std::chrono::weekday; |
|---|
| 38 | |
|---|
| 39 | ASSERT_NOEXCEPT(weekday{std::declval<local_days>()}); |
|---|
| 40 | |
|---|
| 41 | { |
|---|
| 42 | constexpr local_days sd{}; // 1-Jan-1970 was a Thursday |
|---|
| 43 | constexpr weekday wd{sd}; |
|---|
| 44 | |
|---|
| 45 | static_assert( wd.ok(), "" ); |
|---|
| 46 | static_assert( wd.c_encoding() == 4, "" ); |
|---|
| 47 | } |
|---|
| 48 | |
|---|
| 49 | { |
|---|
| 50 | constexpr local_days sd{days{10957+32}}; // 2-Feb-2000 was a Wednesday |
|---|
| 51 | constexpr weekday wd{sd}; |
|---|
| 52 | |
|---|
| 53 | static_assert( wd.ok(), "" ); |
|---|
| 54 | static_assert( wd.c_encoding() == 3, "" ); |
|---|
| 55 | } |
|---|
| 56 | |
|---|
| 57 | |
|---|
| 58 | { |
|---|
| 59 | constexpr local_days sd{days{-10957}}; // 2-Jan-1940 was a Tuesday |
|---|
| 60 | constexpr weekday wd{sd}; |
|---|
| 61 | |
|---|
| 62 | static_assert( wd.ok(), "" ); |
|---|
| 63 | static_assert( wd.c_encoding() == 2, "" ); |
|---|
| 64 | } |
|---|
| 65 | |
|---|
| 66 | { |
|---|
| 67 | local_days sd{days{-(10957+34)}}; // 29-Nov-1939 was a Wednesday |
|---|
| 68 | weekday wd{sd}; |
|---|
| 69 | |
|---|
| 70 | assert( wd.ok()); |
|---|
| 71 | assert( wd.c_encoding() == 3); |
|---|
| 72 | } |
|---|
| 73 | |
|---|
| 74 | return 0; |
|---|
| 75 | } |
|---|
| 76 | |
|---|
