literals.h 1.3 KB

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  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. #ifndef _LIBCPP___CHRONO_LITERALS_H
  10. #define _LIBCPP___CHRONO_LITERALS_H
  11. #include <__chrono/day.h>
  12. #include <__chrono/year.h>
  13. #include <__config>
  14. #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  15. # pragma GCC system_header
  16. #endif
  17. #if _LIBCPP_STD_VER >= 20
  18. _LIBCPP_BEGIN_NAMESPACE_STD
  19. inline namespace literals
  20. {
  21. inline namespace chrono_literals
  22. {
  23. _LIBCPP_HIDE_FROM_ABI constexpr chrono::day operator ""d(unsigned long long __d) noexcept
  24. {
  25. return chrono::day(static_cast<unsigned>(__d));
  26. }
  27. _LIBCPP_HIDE_FROM_ABI constexpr chrono::year operator ""y(unsigned long long __y) noexcept
  28. {
  29. return chrono::year(static_cast<int>(__y));
  30. }
  31. } // namespace chrono_literals
  32. } // namespace literals
  33. namespace chrono { // hoist the literals into namespace std::chrono
  34. using namespace literals::chrono_literals;
  35. } // namespace chrono
  36. _LIBCPP_END_NAMESPACE_STD
  37. #endif // _LIBCPP_STD_VER >= 20
  38. #endif // _LIBCPP___CHRONO_LITERALS_H