forked from OSchip/llvm-project
54 lines
1.8 KiB
C++
54 lines
1.8 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_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_BEGIN_NAMESPACE_STD
|
|
|
|
template <class _InputIterator1, class _InputIterator2, class _Tp>
|
|
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
|
|
_Tp
|
|
inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init)
|
|
{
|
|
for (; __first1 != __last1; ++__first1, (void) ++__first2)
|
|
#if _LIBCPP_STD_VER > 17
|
|
__init = _VSTD::move(__init) + *__first1 * *__first2;
|
|
#else
|
|
__init = __init + *__first1 * *__first2;
|
|
#endif
|
|
return __init;
|
|
}
|
|
|
|
template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>
|
|
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
|
|
_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 > 17
|
|
__init = __binary_op1(_VSTD::move(__init), __binary_op2(*__first1, *__first2));
|
|
#else
|
|
__init = __binary_op1(__init, __binary_op2(*__first1, *__first2));
|
|
#endif
|
|
return __init;
|
|
}
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP___NUMERIC_INNER_PRODUCT_H
|