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// -*- 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_BINARY_NEGATE_H
#define _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H
#include <__config>
#include <__functional/binary_function.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS)
template <class _Predicate>
class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 binary_negate
: public __binary_function<typename _Predicate::first_argument_type,
typename _Predicate::second_argument_type,
bool> {
_Predicate __pred_;
public:
_LIBCPP_HIDE_FROM_ABI explicit _LIBCPP_CONSTEXPR_SINCE_CXX14 binary_negate(const _Predicate& __pred)
: __pred_(__pred) {}
_LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI bool operator()(
const typename _Predicate::first_argument_type& __x, const typename _Predicate::second_argument_type& __y) const {
return !__pred_(__x, __y);
}
};
template <class _Predicate>
_LIBCPP_DEPRECATED_IN_CXX17 inline _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_HIDE_FROM_ABI binary_negate<_Predicate>
not2(const _Predicate& __pred) {
return binary_negate<_Predicate>(__pred);
}
#endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS)
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___FUNCTIONAL_BINARY_NEGATE_H
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