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77a00c0d54
As part of the upcoming clang-formatting of libc++, this patch performs the long desired removal of the _VSTD macro. See https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all for the clang-format proposal.
49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ALGORITHM_PARTITION_POINT_H
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#define _LIBCPP___ALGORITHM_PARTITION_POINT_H
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#include <__algorithm/half_positive.h>
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#include <__config>
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#include <__iterator/advance.h>
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#include <__iterator/distance.h>
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#include <__iterator/iterator_traits.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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template<class _ForwardIterator, class _Predicate>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator
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partition_point(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
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{
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typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
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difference_type __len = std::distance(__first, __last);
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while (__len != 0)
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{
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difference_type __l2 = std::__half_positive(__len);
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_ForwardIterator __m = __first;
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std::advance(__m, __l2);
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if (__pred(*__m))
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{
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__first = ++__m;
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__len -= __l2 + 1;
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}
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else
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__len = __l2;
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}
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return __first;
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}
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___ALGORITHM_PARTITION_POINT_H
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