5d4439cc3e
release/17.x branch, commit 8f4dd44097c9ae25dd203d5ac87f3b48f854bba8 This adds the flag `-D_LIBCPP_PSTL_CPU_BACKEND_SERIAL`. A future enhancement could possibly pass something different if there is a compelling parallel implementation. That libdispatch one might be worth looking into.
59 lines
1.8 KiB
C++
Vendored
59 lines
1.8 KiB
C++
Vendored
// -*- 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_INNER_PRODUCT_H
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#define _LIBCPP___NUMERIC_INNER_PRODUCT_H
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#include <__config>
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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_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _InputIterator1, class _InputIterator2, class _Tp>
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_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
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_Tp
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inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init)
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{
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for (; __first1 != __last1; ++__first1, (void) ++__first2)
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#if _LIBCPP_STD_VER >= 20
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__init = _VSTD::move(__init) + *__first1 * *__first2;
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#else
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__init = __init + *__first1 * *__first2;
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#endif
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return __init;
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}
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template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>
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_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
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_Tp
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inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2,
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_Tp __init, _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2)
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{
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for (; __first1 != __last1; ++__first1, (void) ++__first2)
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#if _LIBCPP_STD_VER >= 20
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__init = __binary_op1(_VSTD::move(__init), __binary_op2(*__first1, *__first2));
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#else
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__init = __binary_op1(__init, __binary_op2(*__first1, *__first2));
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#endif
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return __init;
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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___NUMERIC_INNER_PRODUCT_H
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