llvm-project/libcxx/include/__numeric/adjacent_difference.h
Louis Dionne 9783f28cbb
[libc++] Format the code base (#74334)
This patch runs clang-format on all of libcxx/include and libcxx/src, in
accordance with the RFC discussed at [1]. Follow-up patches will format
the benchmarks, the test suite and remaining parts of the code. I'm
splitting this one into its own patch so the diff is a bit easier to
review.

This patch was generated with:

   find libcxx/include libcxx/src -type f \
      | grep -v 'module.modulemap.in' \
      | grep -v 'CMakeLists.txt' \
      | grep -v 'README.txt' \
      | grep -v 'libcxx.imp' \
      | grep -v '__config_site.in' \
      | xargs clang-format -i

A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh
to help resolve merge and rebase issues across these formatting changes.

[1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
2023-12-18 14:01:33 -05:00

69 lines
2.2 KiB
C++

// -*- 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___NUMERIC_ADJACENT_DIFFERENCE_H
#define _LIBCPP___NUMERIC_ADJACENT_DIFFERENCE_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <__utility/move.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _OutputIterator>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator
adjacent_difference(_InputIterator __first, _InputIterator __last, _OutputIterator __result) {
if (__first != __last) {
typename iterator_traits<_InputIterator>::value_type __acc(*__first);
*__result = __acc;
for (++__first, (void)++__result; __first != __last; ++__first, (void)++__result) {
typename iterator_traits<_InputIterator>::value_type __val(*__first);
#if _LIBCPP_STD_VER >= 20
*__result = __val - std::move(__acc);
#else
*__result = __val - __acc;
#endif
__acc = std::move(__val);
}
}
return __result;
}
template <class _InputIterator, class _OutputIterator, class _BinaryOperation>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator adjacent_difference(
_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryOperation __binary_op) {
if (__first != __last) {
typename iterator_traits<_InputIterator>::value_type __acc(*__first);
*__result = __acc;
for (++__first, (void)++__result; __first != __last; ++__first, (void)++__result) {
typename iterator_traits<_InputIterator>::value_type __val(*__first);
#if _LIBCPP_STD_VER >= 20
*__result = __binary_op(__val, std::move(__acc));
#else
*__result = __binary_op(__val, __acc);
#endif
__acc = std::move(__val);
}
}
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___NUMERIC_ADJACENT_DIFFERENCE_H