1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <chrono>
// constexpr hours make24(const hours& h, bool is_pm) noexcept;
// Returns: If is_pm is false, returns the 24-hour equivalent of h in the range [0h, 11h],
// assuming h represents an ante meridiem hour.
// Else returns the 24-hour equivalent of h in the range [12h, 23h],
// assuming h represents a post meridiem hour.
// If h is not in the range [1h, 12h], the value returned is unspecified.
#include <chrono>
#include <cassert>
#include <utility>
#include "test_macros.h"
int main(int, char**)
{
using hours = std::chrono::hours;
ASSERT_SAME_TYPE(hours, decltype(std::chrono::make24(std::declval<hours>(), false)));
ASSERT_NOEXCEPT( std::chrono::make24(std::declval<hours>(), false));
static_assert( std::chrono::make24(hours( 1), false) == hours( 1), "");
static_assert( std::chrono::make24(hours(11), false) == hours(11), "");
static_assert( std::chrono::make24(hours(12), false) == hours( 0), "");
static_assert( std::chrono::make24(hours( 1), true) == hours(13), "");
static_assert( std::chrono::make24(hours(11), true) == hours(23), "");
static_assert( std::chrono::make24(hours(12), true) == hours(12), "");
for (int i = 1; i < 11; ++i)
{
assert((std::chrono::make24(hours(i), false)) == hours(i));
assert((std::chrono::make24(hours(i), true)) == hours(12+i));
}
assert((std::chrono::make24(hours(12), false)) == hours( 0));
assert((std::chrono::make24(hours(12), true)) == hours(12));
return 0;
}
|
