1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___CXX03___FUNCTIONAL_UNARY_FUNCTION_H 10 #define _LIBCPP___CXX03___FUNCTIONAL_UNARY_FUNCTION_H 11 12 #include <__cxx03/__config> 13 14 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 15 # pragma GCC system_header 16 #endif 17 18 _LIBCPP_BEGIN_NAMESPACE_STD 19 20 template <class _Arg, class _Result> 21 struct _LIBCPP_TEMPLATE_VIS unary_function { 22 typedef _Arg argument_type; 23 typedef _Result result_type; 24 }; 25 26 template <class _Arg, class _Result> 27 struct __unary_function_keep_layout_base { 28 using argument_type = _Arg; 29 using result_type = _Result; 30 }; 31 32 _LIBCPP_DIAGNOSTIC_PUSH 33 _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations") 34 template <class _Arg, class _Result> 35 using __unary_function = unary_function<_Arg, _Result>; 36 _LIBCPP_DIAGNOSTIC_POP 37 38 _LIBCPP_END_NAMESPACE_STD 39 40 #endif // _LIBCPP___CXX03___FUNCTIONAL_UNARY_FUNCTION_H 41