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134723edd5
This is a fairly mechanical change, it just moves each algorithm into its own header. This is intended to be a NFC. This commit re-applies 7ed7d4ccb899, which was reverted in 692d7166f771 because the Modules build got broken. The modules build has now been fixed, so we're re-committing this. Differential Revision: https://reviews.llvm.org/D103583 Attribution note ---------------- I'm only committing this. This commit is a mix of D103583, D103330 and D104171 authored by: Co-authored-by: Christopher Di Bella <cjdb@google.com> Co-authored-by: zoecarver <z.zoelec2@gmail.com>
62 lines
1.7 KiB
C++
62 lines
1.7 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_REVERSE_H
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#define _LIBCPP___ALGORITHM_REVERSE_H
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#include <__config>
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#include <__iterator/iterator_traits.h>
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#include <type_traits>
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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_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _BidirectionalIterator>
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inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
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void
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__reverse(_BidirectionalIterator __first, _BidirectionalIterator __last, bidirectional_iterator_tag)
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{
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while (__first != __last)
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{
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if (__first == --__last)
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break;
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_VSTD::iter_swap(__first, __last);
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++__first;
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}
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}
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template <class _RandomAccessIterator>
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inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
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void
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__reverse(_RandomAccessIterator __first, _RandomAccessIterator __last, random_access_iterator_tag)
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{
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if (__first != __last)
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for (; __first < --__last; ++__first)
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_VSTD::iter_swap(__first, __last);
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}
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template <class _BidirectionalIterator>
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inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
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void
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reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
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{
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_VSTD::__reverse(__first, __last, typename iterator_traits<_BidirectionalIterator>::iterator_category());
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}
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_LIBCPP_END_NAMESPACE_STD
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___ALGORITHM_REVERSE_H
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