1 files changed, 52 insertions, 0 deletions
diff --git a/libcxx/include/__algorithm/algorithm_family.h b/libcxx/include/__algorithm/algorithm_family.h
new file mode 100644
index 000000000000..30ffff832ebc
--- /dev/null
+++ b/libcxx/include/__algorithm/algorithm_family.h
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// 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___ALGORITHM_ALGORITHM_FAMILY_H
+#define _LIBCPP___ALGORITHM_ALGORITHM_FAMILY_H
+
+#include <__algorithm/iterator_operations.h>
+#include <__algorithm/move.h>
+#include <__algorithm/ranges_move.h>
+#include <__config>
+#include <__utility/move.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _AlgPolicy>
+struct _AlgFamily;
+
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
+
+template <>
+struct _AlgFamily<_RangeAlgPolicy> {
+  static constexpr auto __move = ranges::move;
+};
+
+#endif
+
+template <>
+struct _AlgFamily<_ClassicAlgPolicy> {
+
+  // move
+  template <class _InputIterator, class _OutputIterator>
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 static _OutputIterator
+  __move(_InputIterator __first, _InputIterator __last, _OutputIterator __result) {
+    return std::move(
+        std::move(__first),
+        std::move(__last),
+        std::move(__result));
+  }
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ALGORITHM_ALGORITHM_FAMILY_H