1 files changed, 44 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__functional/pointer_to_unary_function.h b/contrib/llvm-project/libcxx/include/__functional/pointer_to_unary_function.h
new file mode 100644
index 000000000000..0338e7671789
--- /dev/null
+++ b/contrib/llvm-project/libcxx/include/__functional/pointer_to_unary_function.h
@@ -0,0 +1,44 @@
+// -*- 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___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H
+#define _LIBCPP___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H
+
+#include <__config>
+#include <__functional/unary_function.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
+
+template <class _Arg, class _Result>
+class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 pointer_to_unary_function
+    : public __unary_function<_Arg, _Result> {
+  _Result (*__f_)(_Arg);
+
+public:
+  _LIBCPP_HIDE_FROM_ABI explicit pointer_to_unary_function(_Result (*__f)(_Arg)) : __f_(__f) {}
+  _LIBCPP_HIDE_FROM_ABI _Result operator()(_Arg __x) const { return __f_(__x); }
+};
+
+template <class _Arg, class _Result>
+_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_HIDE_FROM_ABI pointer_to_unary_function<_Arg, _Result>
+ptr_fun(_Result (*__f)(_Arg)) {
+  return pointer_to_unary_function<_Arg, _Result>(__f);
+}
+
+#endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FUNCTIONAL_POINTER_TO_UNARY_FUNCTION_H