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 inline namespace chrono_literals { 27 _LIBCPP_HIDE_FROM_ABI constexpr chrono::day operator""d(unsigned long long __d) noexcept { 28 return chrono::day(static_cast<unsigned>(__d)); 29 } 30 31 _LIBCPP_HIDE_FROM_ABI constexpr chrono::year operator""y(unsigned long long __y) noexcept { 32 return chrono::year(static_cast<int>(__y)); 33 } 34 } // namespace chrono_literals 35 } // namespace literals 36 37 namespace chrono { // hoist the literals into namespace std::chrono 38 using namespace literals::chrono_literals; 39 } // namespace chrono 40 41 _LIBCPP_END_NAMESPACE_STD 42 43 #endif // _LIBCPP_STD_VER >= 20 44 45 #endif // _LIBCPP___CHRONO_LITERALS_H 46