1 files changed, 112 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__chrono/hh_mm_ss.h b/contrib/llvm-project/libcxx/include/__chrono/hh_mm_ss.h
new file mode 100644
index 000000000000..57d2247fe6a3
--- /dev/null
+++ b/contrib/llvm-project/libcxx/include/__chrono/hh_mm_ss.h
@@ -0,0 +1,112 @@
+// -*- 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_HH_MM_SS_H
+#define _LIBCPP___CHRONO_HH_MM_SS_H
+
+#include <__chrono/duration.h>
+#include <__chrono/time_point.h>
+#include <__config>
+#include <__type_traits/common_type.h>
+#include <ratio>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+#if _LIBCPP_STD_VER >= 20
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace chrono {
+
+template <class _Duration>
+class hh_mm_ss {
+private:
+  static_assert(__is_duration<_Duration>::value, "template parameter of hh_mm_ss must be a std::chrono::duration");
+  using __CommonType = common_type_t<_Duration, chrono::seconds>;
+
+  _LIBCPP_HIDE_FROM_ABI static constexpr uint64_t __pow10(unsigned __exp) {
+    uint64_t __ret = 1;
+    for (unsigned __i = 0; __i < __exp; ++__i)
+      __ret *= 10U;
+    return __ret;
+  }
+
+  _LIBCPP_HIDE_FROM_ABI static constexpr unsigned __width(uint64_t __n, uint64_t __d = 10, unsigned __w = 0) {
+    if (__n >= 2 && __d != 0 && __w < 19)
+      return 1 + __width(__n, __d % __n * 10, __w + 1);
+    return 0;
+  }
+
+public:
+  _LIBCPP_HIDE_FROM_ABI static unsigned constexpr fractional_width =
+      __width(__CommonType::period::den) < 19 ? __width(__CommonType::period::den) : 6u;
+  using precision = duration<typename __CommonType::rep, ratio<1, __pow10(fractional_width)>>;
+
+  _LIBCPP_HIDE_FROM_ABI constexpr hh_mm_ss() noexcept : hh_mm_ss{_Duration::zero()} {}
+
+  _LIBCPP_HIDE_FROM_ABI constexpr explicit hh_mm_ss(_Duration __d) noexcept
+      : __is_neg_(__d < _Duration(0)),
+        __h_(chrono::duration_cast<chrono::hours>(chrono::abs(__d))),
+        __m_(chrono::duration_cast<chrono::minutes>(chrono::abs(__d) - hours())),
+        __s_(chrono::duration_cast<chrono::seconds>(chrono::abs(__d) - hours() - minutes())),
+        __f_(chrono::duration_cast<precision>(chrono::abs(__d) - hours() - minutes() - seconds())) {}
+
+  _LIBCPP_HIDE_FROM_ABI constexpr bool is_negative() const noexcept { return __is_neg_; }
+  _LIBCPP_HIDE_FROM_ABI constexpr chrono::hours hours() const noexcept { return __h_; }
+  _LIBCPP_HIDE_FROM_ABI constexpr chrono::minutes minutes() const noexcept { return __m_; }
+  _LIBCPP_HIDE_FROM_ABI constexpr chrono::seconds seconds() const noexcept { return __s_; }
+  _LIBCPP_HIDE_FROM_ABI constexpr precision subseconds() const noexcept { return __f_; }
+
+  _LIBCPP_HIDE_FROM_ABI constexpr precision to_duration() const noexcept {
+    auto __dur = __h_ + __m_ + __s_ + __f_;
+    return __is_neg_ ? -__dur : __dur;
+  }
+
+  _LIBCPP_HIDE_FROM_ABI constexpr explicit operator precision() const noexcept { return to_duration(); }
+
+private:
+  bool __is_neg_;
+  chrono::hours __h_;
+  chrono::minutes __m_;
+  chrono::seconds __s_;
+  precision __f_;
+};
+_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(hh_mm_ss);
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_am(const hours& __h) noexcept {
+  return __h >= hours(0) && __h < hours(12);
+}
+_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_pm(const hours& __h) noexcept {
+  return __h >= hours(12) && __h < hours(24);
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr hours make12(const hours& __h) noexcept {
+  if (__h == hours(0))
+    return hours(12);
+  else if (__h <= hours(12))
+    return __h;
+  else
+    return __h - hours(12);
+}
+
+_LIBCPP_HIDE_FROM_ABI inline constexpr hours make24(const hours& __h, bool __is_pm) noexcept {
+  if (__is_pm)
+    return __h == hours(12) ? __h : __h + hours(12);
+  else
+    return __h == hours(12) ? hours(0) : __h;
+}
+} // namespace chrono
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_STD_VER >= 20
+
+#endif // _LIBCPP___CHRONO_HH_MM_SS_H