368faacac7
This commit reverts 5aaefa51 (and also partly 7f285f48e77 and b6d75682f9, which were related to the original commit). As landed, 5aaefa51 had unintended consequences on some downstream bots and didn't have proper coverage upstream due to a few subtle things. Implementing this is something we should do in libc++, however we'll first need to address a few issues listed in https://reviews.llvm.org/D106124#3349710. Differential Revision: https://reviews.llvm.org/D120683
55 lines
2.4 KiB
C++
55 lines
2.4 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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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___NUMERIC_TRANSFORM_REDUCE_H
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#define _LIBCPP___NUMERIC_TRANSFORM_REDUCE_H
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#include <__config>
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#include <__functional/operations.h>
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#include <__utility/move.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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#if _LIBCPP_STD_VER > 14
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template <class _InputIterator, class _Tp, class _BinaryOp, class _UnaryOp>
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_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _Tp transform_reduce(_InputIterator __first,
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_InputIterator __last, _Tp __init,
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_BinaryOp __b, _UnaryOp __u) {
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for (; __first != __last; ++__first)
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__init = __b(__init, __u(*__first));
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return __init;
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}
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template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOp1, class _BinaryOp2>
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_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _Tp transform_reduce(_InputIterator1 __first1,
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_InputIterator1 __last1,
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_InputIterator2 __first2, _Tp __init,
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_BinaryOp1 __b1, _BinaryOp2 __b2) {
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for (; __first1 != __last1; ++__first1, (void)++__first2)
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__init = __b1(__init, __b2(*__first1, *__first2));
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return __init;
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}
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template <class _InputIterator1, class _InputIterator2, class _Tp>
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_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _Tp transform_reduce(_InputIterator1 __first1,
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_InputIterator1 __last1,
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_InputIterator2 __first2, _Tp __init) {
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return _VSTD::transform_reduce(__first1, __last1, __first2, _VSTD::move(__init), _VSTD::plus<>(),
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_VSTD::multiplies<>());
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}
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#endif
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___NUMERIC_TRANSFORM_REDUCE_H
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