xref: /freebsd-src/contrib/llvm-project/libcxx/include/__functional/binary_negate.h (revision 81ad626541db97eb356e2c1d4a20eb2a26a766ab)
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_BINARY_NEGATE_H
11fe6060f1SDimitry Andric #define _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H
12fe6060f1SDimitry Andric 
13fe6060f1SDimitry Andric #include <__config>
14fe6060f1SDimitry Andric #include <__functional/binary_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>
25fe6060f1SDimitry Andric class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 binary_negate
26*81ad6265SDimitry Andric     : public __binary_function<typename _Predicate::first_argument_type,
27fe6060f1SDimitry Andric                                typename _Predicate::second_argument_type,
28fe6060f1SDimitry Andric                                bool>
29fe6060f1SDimitry Andric {
30fe6060f1SDimitry Andric     _Predicate __pred_;
31fe6060f1SDimitry Andric public:
32fe6060f1SDimitry Andric     _LIBCPP_INLINE_VISIBILITY explicit _LIBCPP_CONSTEXPR_AFTER_CXX11
33fe6060f1SDimitry Andric     binary_negate(const _Predicate& __pred) : __pred_(__pred) {}
34fe6060f1SDimitry Andric 
35fe6060f1SDimitry Andric     _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
36fe6060f1SDimitry Andric     bool operator()(const typename _Predicate::first_argument_type& __x,
37fe6060f1SDimitry Andric                     const typename _Predicate::second_argument_type& __y) const
38fe6060f1SDimitry Andric         {return !__pred_(__x, __y);}
39fe6060f1SDimitry Andric };
40fe6060f1SDimitry Andric 
41fe6060f1SDimitry Andric template <class _Predicate>
42fe6060f1SDimitry Andric _LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
43fe6060f1SDimitry Andric binary_negate<_Predicate>
44fe6060f1SDimitry Andric not2(const _Predicate& __pred) {return binary_negate<_Predicate>(__pred);}
45fe6060f1SDimitry Andric 
46fe6060f1SDimitry Andric #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS)
47fe6060f1SDimitry Andric 
48fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD
49fe6060f1SDimitry Andric 
50fe6060f1SDimitry Andric #endif // _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H
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