1fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 2fe6060f1SDimitry Andric // 3fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6fe6060f1SDimitry Andric // 7fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 8fe6060f1SDimitry Andric 9fe6060f1SDimitry Andric #ifndef _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H 10fe6060f1SDimitry Andric #define _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H 11fe6060f1SDimitry Andric 12fe6060f1SDimitry Andric #include <__config> 13fe6060f1SDimitry Andric 14fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 15fe6060f1SDimitry Andric # pragma GCC system_header 16fe6060f1SDimitry Andric #endif 17fe6060f1SDimitry Andric 18fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 19fe6060f1SDimitry Andric 20*81ad6265SDimitry Andric #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) 21*81ad6265SDimitry Andric 22fe6060f1SDimitry Andric template <class _Arg, class _Result> 23*81ad6265SDimitry Andric struct _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 unary_function 24fe6060f1SDimitry Andric { 25fe6060f1SDimitry Andric typedef _Arg argument_type; 26fe6060f1SDimitry Andric typedef _Result result_type; 27fe6060f1SDimitry Andric }; 28fe6060f1SDimitry Andric 29*81ad6265SDimitry Andric #endif // _LIBCPP_STD_VER <= 14 30*81ad6265SDimitry Andric 31*81ad6265SDimitry Andric template <class _Arg, class _Result> struct __unary_function_keep_layout_base { 32*81ad6265SDimitry Andric #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS) 33*81ad6265SDimitry Andric using argument_type _LIBCPP_DEPRECATED_IN_CXX17 = _Arg; 34*81ad6265SDimitry Andric using result_type _LIBCPP_DEPRECATED_IN_CXX17 = _Result; 35*81ad6265SDimitry Andric #endif 36*81ad6265SDimitry Andric }; 37*81ad6265SDimitry Andric 38*81ad6265SDimitry Andric #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION) 39*81ad6265SDimitry Andric _LIBCPP_DIAGNOSTIC_PUSH 40*81ad6265SDimitry Andric _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations") 41*81ad6265SDimitry Andric template <class _Arg, class _Result> 42*81ad6265SDimitry Andric using __unary_function = unary_function<_Arg, _Result>; 43*81ad6265SDimitry Andric _LIBCPP_DIAGNOSTIC_POP 44*81ad6265SDimitry Andric #else 45*81ad6265SDimitry Andric template <class _Arg, class _Result> 46*81ad6265SDimitry Andric using __unary_function = __unary_function_keep_layout_base<_Arg, _Result>; 47*81ad6265SDimitry Andric #endif 48*81ad6265SDimitry Andric 49fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 50fe6060f1SDimitry Andric 51fe6060f1SDimitry Andric #endif // _LIBCPP___FUNCTIONAL_UNARY_FUNCTION_H 52