1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef _LIBCPP___CHRONO_LITERALS_H
11 #define _LIBCPP___CHRONO_LITERALS_H
12 
13 #include <__chrono/day.h>
14 #include <__chrono/year.h>
15 #include <__config>
16 
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 #  pragma GCC system_header
19 #endif
20 
21 #if _LIBCPP_STD_VER >= 20
22 
23 _LIBCPP_BEGIN_NAMESPACE_STD
24 
25 inline namespace literals
26 {
27   inline namespace chrono_literals
28   {
29     _LIBCPP_HIDE_FROM_ABI constexpr chrono::day operator ""d(unsigned long long __d) noexcept
30     {
31         return chrono::day(static_cast<unsigned>(__d));
32     }
33 
34     _LIBCPP_HIDE_FROM_ABI constexpr chrono::year operator ""y(unsigned long long __y) noexcept
35     {
36         return chrono::year(static_cast<int>(__y));
37     }
38 } // namespace chrono_literals
39 } // namespace literals
40 
41 namespace chrono { // hoist the literals into namespace std::chrono
42    using namespace literals::chrono_literals;
43 } // namespace chrono
44 
45 _LIBCPP_END_NAMESPACE_STD
46 
47 #endif // _LIBCPP_STD_VER >= 20
48 
49 #endif // _LIBCPP___CHRONO_LITERALS_H
50