1fe6060f1SDimitry Andric // -*- C++ -*- 2fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 3fe6060f1SDimitry Andric // 4fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 6fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7fe6060f1SDimitry Andric // 8fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 9fe6060f1SDimitry Andric 10fe6060f1SDimitry Andric #ifndef _LIBCPP___FUNCTIONAL_UNARY_NEGATE_H 11fe6060f1SDimitry Andric #define _LIBCPP___FUNCTIONAL_UNARY_NEGATE_H 12fe6060f1SDimitry Andric 13fe6060f1SDimitry Andric #include <__config> 14fe6060f1SDimitry Andric #include <__functional/unary_function.h> 15fe6060f1SDimitry Andric 16fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17fe6060f1SDimitry Andric # pragma GCC system_header 18fe6060f1SDimitry Andric #endif 19fe6060f1SDimitry Andric 20fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 21fe6060f1SDimitry Andric 22fe6060f1SDimitry Andric #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS) 23fe6060f1SDimitry Andric 24fe6060f1SDimitry Andric template <class _Predicate> 25*0fca6ea1SDimitry Andric class _LIBCPP_TEMPLATE_VIS 26*0fca6ea1SDimitry Andric _LIBCPP_DEPRECATED_IN_CXX17 unary_negate : public __unary_function<typename _Predicate::argument_type, bool> { 27fe6060f1SDimitry Andric _Predicate __pred_; 28cb14a3feSDimitry Andric 29fe6060f1SDimitry Andric public: 30cb14a3feSDimitry Andric _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI explicit unary_negate(const _Predicate& __pred) 31fe6060f1SDimitry Andric : __pred_(__pred) {} 32cb14a3feSDimitry Andric _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI bool 33cb14a3feSDimitry Andric operator()(const typename _Predicate::argument_type& __x) const { 34cb14a3feSDimitry Andric return !__pred_(__x); 35cb14a3feSDimitry Andric } 36fe6060f1SDimitry Andric }; 37fe6060f1SDimitry Andric 38fe6060f1SDimitry Andric template <class _Predicate> 39cb14a3feSDimitry Andric _LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI unary_negate<_Predicate> 40cb14a3feSDimitry Andric not1(const _Predicate& __pred) { 41cb14a3feSDimitry Andric return unary_negate<_Predicate>(__pred); 42cb14a3feSDimitry Andric } 43fe6060f1SDimitry Andric 44fe6060f1SDimitry Andric #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS) 45fe6060f1SDimitry Andric 46fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 47fe6060f1SDimitry Andric 48fe6060f1SDimitry Andric #endif // _LIBCPP___FUNCTIONAL_UNARY_NEGATE_H 49