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1 | // { dg-options "-std=gnu++2a" } |
2 | // { dg-do compile { target c++2a } } | |
3 | ||
99dee823 | 4 | // Copyright (C) 2020-2021 Free Software Foundation, Inc. |
03d5044b PP |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | // Class template day [time.cal.month_weekday] | |
22 | ||
23 | #include <chrono> | |
24 | ||
25 | constexpr void | |
26 | constexpr_month_weekday() | |
27 | { | |
28 | using namespace std::chrono; | |
29 | using mwd = month_weekday; | |
30 | ||
31 | // mwd0 is the third Tuesday of February of an as yet unspecified year. | |
32 | constexpr auto mwd0 = February / Tuesday[3]; | |
33 | static_assert(mwd0.ok()); | |
34 | static_assert(mwd0.month() == February); | |
35 | static_assert(mwd0.weekday_indexed() == Tuesday[3]); | |
36 | ||
37 | static_assert(!mwd{month{0}, Tuesday[3]}.ok()); | |
38 | static_assert(!mwd{February, Tuesday[0]}.ok()); | |
39 | ||
40 | static_assert(mwd{January, Monday[2]} == mwd{January, Monday[2]}); | |
41 | static_assert(mwd{January, Monday[2]} != mwd{January, Monday[3]}); | |
42 | static_assert(mwd{February, Monday[2]} != mwd{January, Monday[2]}); | |
43 | ||
44 | static_assert(August/Friday[2] == mwd{month{8}, weekday_indexed{weekday{5u}, 2}}); | |
45 | static_assert(8/Friday[2] == mwd{month{8}, weekday_indexed{weekday{5u}, 2}}); | |
46 | static_assert(Friday[2]/August == mwd{month{8}, weekday_indexed{weekday{5u}, 2}}); | |
47 | static_assert(Friday[2]/8 == mwd{month{8}, weekday_indexed{weekday{5u}, 2}}); | |
48 | } |