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1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___NUMERIC_INNER_PRODUCT_H11#define _LIBCPP___NUMERIC_INNER_PRODUCT_H12 13#include <__config>14#include <__utility/move.h>15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)17# pragma GCC system_header18#endif19 20_LIBCPP_PUSH_MACROS21#include <__undef_macros>22 23_LIBCPP_BEGIN_NAMESPACE_STD24 25template <class _InputIterator1, class _InputIterator2, class _Tp>26_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp27inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init) {28 for (; __first1 != __last1; ++__first1, (void)++__first2)29#if _LIBCPP_STD_VER >= 2030 __init = std::move(__init) + *__first1 * *__first2;31#else32 __init = __init + *__first1 * *__first2;33#endif34 return __init;35}36 37template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>38_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp inner_product(39 _InputIterator1 __first1,40 _InputIterator1 __last1,41 _InputIterator2 __first2,42 _Tp __init,43 _BinaryOperation1 __binary_op1,44 _BinaryOperation2 __binary_op2) {45 for (; __first1 != __last1; ++__first1, (void)++__first2)46#if _LIBCPP_STD_VER >= 2047 __init = __binary_op1(std::move(__init), __binary_op2(*__first1, *__first2));48#else49 __init = __binary_op1(__init, __binary_op2(*__first1, *__first2));50#endif51 return __init;52}53 54_LIBCPP_END_NAMESPACE_STD55 56_LIBCPP_POP_MACROS57 58#endif // _LIBCPP___NUMERIC_INNER_PRODUCT_H59