1 files changed, 118 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__chrono/year.h b/contrib/llvm-project/libcxx/include/__chrono/year.h
new file mode 100644
index 000000000000..1899d09f38db
--- /dev/null
+++ b/contrib/llvm-project/libcxx/include/__chrono/year.h
@@ -0,0 +1,118 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___CHRONO_YEAR_H
+#define _LIBCPP___CHRONO_YEAR_H
+
+#include <__chrono/duration.h>
+#include <__config>
+#include <compare>
+#include <limits>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+#if _LIBCPP_STD_VER >= 20
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace chrono {
+
+class year {
+private:
+  short __y_;
+
+public:
+  year() = default;
+  _LIBCPP_HIDE_FROM_ABI explicit inline constexpr year(int __val) noexcept : __y_(static_cast<short>(__val)) {}
+
+  _LIBCPP_HIDE_FROM_ABI inline constexpr year& operator++() noexcept {
+    ++__y_;
+    return *this;
+  }
+  _LIBCPP_HIDE_FROM_ABI inline constexpr year operator++(int) noexcept {
+    year __tmp = *this;
+    ++(*this);
+    return __tmp;
+  }
+  _LIBCPP_HIDE_FROM_ABI inline constexpr year& operator--() noexcept {
+    --__y_;
+    return *this;
+  }
+  _LIBCPP_HIDE_FROM_ABI inline constexpr year operator--(int) noexcept {
+    year __tmp = *this;
+    --(*this);
+    return __tmp;
+  }
+  _LIBCPP_HIDE_FROM_ABI constexpr year& operator+=(const years& __dy) noexcept;
+  _LIBCPP_HIDE_FROM_ABI constexpr year& operator-=(const years& __dy) noexcept;
+  _LIBCPP_HIDE_FROM_ABI inline constexpr year operator+() const noexcept { return *this; }
+  _LIBCPP_HIDE_FROM_ABI inline constexpr year operator-() const noexcept { return year{-__y_}; }
+
+  _LIBCPP_HIDE_FROM_ABI inline constexpr bool is_leap() const noexcept {
+    return __y_ % 4 == 0 && (__y_ % 100 != 0 || __y_ % 400 == 0);
+  }
+  _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator int() const noexcept { return __y_; }
+  _LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept;
+  _LIBCPP_HIDE_FROM_ABI static inline constexpr year min() noexcept { return year{-32767}; }
+  _LIBCPP_HIDE_FROM_ABI static inline constexpr year max() noexcept { return year{32767}; }
+};
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const year& __lhs, const year& __rhs) noexcept {
+  return static_cast<int>(__lhs) == static_cast<int>(__rhs);
+}
+
+_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const year& __lhs, const year& __rhs) noexcept {
+  return static_cast<int>(__lhs) <=> static_cast<int>(__rhs);
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr year operator+(const year& __lhs, const years& __rhs) noexcept {
+  return year(static_cast<int>(__lhs) + __rhs.count());
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr year operator+(const years& __lhs, const year& __rhs) noexcept {
+  return __rhs + __lhs;
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr year operator-(const year& __lhs, const years& __rhs) noexcept {
+  return __lhs + -__rhs;
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr years operator-(const year& __lhs, const year& __rhs) noexcept {
+  return years{static_cast<int>(__lhs) - static_cast<int>(__rhs)};
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr year& year::operator+=(const years& __dy) noexcept {
+  *this = *this + __dy;
+  return *this;
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr year& year::operator-=(const years& __dy) noexcept {
+  *this = *this - __dy;
+  return *this;
+}
+
+_LIBCPP_HIDE_FROM_ABI constexpr bool year::ok() const noexcept {
+  static_assert(static_cast<int>(std::numeric_limits<decltype(__y_)>::max()) == static_cast<int>(max()));
+  return static_cast<int>(min()) <= __y_;
+}
+
+} // namespace chrono
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_STD_VER >= 20
+
+_LIBCPP_POP_MACROS
+
+#endif // _LIBCPP___CHRONO_YEAR_H