1 files changed, 133 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__chrono/monthday.h b/contrib/llvm-project/libcxx/include/__chrono/monthday.h
new file mode 100644
index 000000000000..a89d16e51861
--- /dev/null
+++ b/contrib/llvm-project/libcxx/include/__chrono/monthday.h
@@ -0,0 +1,133 @@
+// -*- 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_MONTHDAY_H
+#define _LIBCPP___CHRONO_MONTHDAY_H
+
+#include <__chrono/calendar.h>
+#include <__chrono/day.h>
+#include <__chrono/month.h>
+#include <__config>
+#include <compare>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+#if _LIBCPP_STD_VER >= 20
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace chrono {
+
+class month_day {
+private:
+  chrono::month __m_;
+  chrono::day __d_;
+
+public:
+  month_day() = default;
+  _LIBCPP_HIDE_FROM_ABI constexpr month_day(const chrono::month& __mval, const chrono::day& __dval) noexcept
+      : __m_{__mval}, __d_{__dval} {}
+  _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; }
+  _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::day day() const noexcept { return __d_; }
+  _LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept;
+};
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr bool month_day::ok() const noexcept {
+  if (!__m_.ok())
+    return false;
+  const unsigned __dval = static_cast<unsigned>(__d_);
+  if (__dval < 1 || __dval > 31)
+    return false;
+  if (__dval <= 29)
+    return true;
+  //  Now we've got either 30 or 31
+  const unsigned __mval = static_cast<unsigned>(__m_);
+  if (__mval == 2)
+    return false;
+  if (__mval == 4 || __mval == 6 || __mval == 9 || __mval == 11)
+    return __dval == 30;
+  return true;
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const month_day& __lhs, const month_day& __rhs) noexcept {
+  return __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day();
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering
+operator<=>(const month_day& __lhs, const month_day& __rhs) noexcept {
+  if (auto __c = __lhs.month() <=> __rhs.month(); __c != 0)
+    return __c;
+  return __lhs.day() <=> __rhs.day();
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(const month& __lhs, const day& __rhs) noexcept {
+  return month_day{__lhs, __rhs};
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(const day& __lhs, const month& __rhs) noexcept {
+  return __rhs / __lhs;
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(const month& __lhs, int __rhs) noexcept {
+  return __lhs / day(__rhs);
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(int __lhs, const day& __rhs) noexcept {
+  return month(__lhs) / __rhs;
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(const day& __lhs, int __rhs) noexcept {
+  return month(__rhs) / __lhs;
+}
+
+class month_day_last {
+private:
+  chrono::month __m_;
+
+public:
+  _LIBCPP_HIDE_FROM_ABI explicit constexpr month_day_last(const chrono::month& __val) noexcept : __m_{__val} {}
+  _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; }
+  _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_.ok(); }
+};
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr bool
+operator==(const month_day_last& __lhs, const month_day_last& __rhs) noexcept {
+  return __lhs.month() == __rhs.month();
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering
+operator<=>(const month_day_last& __lhs, const month_day_last& __rhs) noexcept {
+  return __lhs.month() <=> __rhs.month();
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day_last operator/(const month& __lhs, last_spec) noexcept {
+  return month_day_last{__lhs};
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day_last operator/(last_spec, const month& __rhs) noexcept {
+  return month_day_last{__rhs};
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day_last operator/(int __lhs, last_spec) noexcept {
+  return month_day_last{month(__lhs)};
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr month_day_last operator/(last_spec, int __rhs) noexcept {
+  return month_day_last{month(__rhs)};
+}
+
+} // namespace chrono
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_STD_VER >= 20
+
+#endif // _LIBCPP___CHRONO_MONTHDAY_H