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1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___CXX03___FUNCTIONAL_UNARY_NEGATE_H11#define _LIBCPP___CXX03___FUNCTIONAL_UNARY_NEGATE_H12 13#include <__cxx03/__config>14#include <__cxx03/__functional/unary_function.h>15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)17# pragma GCC system_header18#endif19 20_LIBCPP_BEGIN_NAMESPACE_STD21 22template <class _Predicate>23class _LIBCPP_TEMPLATE_VIS unary_negate : public __unary_function<typename _Predicate::argument_type, bool> {24 _Predicate __pred_;25 26public:27 _LIBCPP_HIDE_FROM_ABI explicit unary_negate(const _Predicate& __pred) : __pred_(__pred) {}28 _LIBCPP_HIDE_FROM_ABI bool operator()(const typename _Predicate::argument_type& __x) const { return !__pred_(__x); }29};30 31template <class _Predicate>32inline _LIBCPP_HIDE_FROM_ABI unary_negate<_Predicate> not1(const _Predicate& __pred) {33 return unary_negate<_Predicate>(__pred);34}35 36_LIBCPP_END_NAMESPACE_STD37 38#endif // _LIBCPP___CXX03___FUNCTIONAL_UNARY_NEGATE_H39