1 files changed, 45 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__algorithm/in_in_result.h b/contrib/llvm-project/libcxx/include/__algorithm/in_in_result.h
new file mode 100644
index 000000000000..fbe53ae4f57e
--- /dev/null
+++ b/contrib/llvm-project/libcxx/include/__algorithm/in_in_result.h
@@ -0,0 +1,45 @@
+// -*- 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___ALGORITHM_IN_IN_RESULT_H
+#define _LIBCPP___ALGORITHM_IN_IN_RESULT_H
+
+#include <__concepts/convertible_to.h>
+#include <__config>
+#include <__utility/move.h>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_HAS_NO_RANGES
+
+namespace ranges {
+template <class _I1, class _I2>
+struct in_in_result {
+  [[no_unique_address]] _I1 in1;
+  [[no_unique_address]] _I2 in2;
+
+  template <class _II1, class _II2>
+    requires convertible_to<const _I1&, _II1> && convertible_to<const _I2&, _II2>
+   _LIBCPP_HIDE_FROM_ABI constexpr
+   operator in_in_result<_II1, _II2>() const & {
+    return {in1, in2};
+  }
+
+  template <class _II1, class _II2>
+    requires convertible_to<_I1, _II1> && convertible_to<_I2, _II2>
+  _LIBCPP_HIDE_FROM_ABI constexpr
+  operator in_in_result<_II1, _II2>() && { return {_VSTD::move(in1), _VSTD::move(in2)}; }
+};
+} // namespace ranges
+
+#endif // _LIBCPP_HAS_NO_RANGES
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ALGORITHM_IN_IN_RESULT_H