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