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// -*- 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_INNER_PRODUCT_H
#define _LIBCPP___NUMERIC_INNER_PRODUCT_H
#include <__config>
#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 _InputIterator1, class _InputIterator2, class _Tp>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp
inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init) {
for (; __first1 != __last1; ++__first1, (void)++__first2)
#if _LIBCPP_STD_VER >= 20
__init = std::move(__init) + *__first1 * *__first2;
#else
__init = __init + *__first1 * *__first2;
#endif
return __init;
}
template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp inner_product(
_InputIterator1 __first1,
_InputIterator1 __last1,
_InputIterator2 __first2,
_Tp __init,
_BinaryOperation1 __binary_op1,
_BinaryOperation2 __binary_op2) {
for (; __first1 != __last1; ++__first1, (void)++__first2)
#if _LIBCPP_STD_VER >= 20
__init = __binary_op1(std::move(__init), __binary_op2(*__first1, *__first2));
#else
__init = __binary_op1(__init, __binary_op2(*__first1, *__first2));
#endif
return __init;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___NUMERIC_INNER_PRODUCT_H
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