1*4bdff4beSrobert // -*- C++ -*-
2*4bdff4beSrobert //===----------------------------------------------------------------------===//
3*4bdff4beSrobert //
4*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information.
6*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7*4bdff4beSrobert //
8*4bdff4beSrobert //===----------------------------------------------------------------------===//
9*4bdff4beSrobert
10*4bdff4beSrobert #ifndef _LIBCPP___NUMERIC_INNER_PRODUCT_H
11*4bdff4beSrobert #define _LIBCPP___NUMERIC_INNER_PRODUCT_H
12*4bdff4beSrobert
13*4bdff4beSrobert #include <__config>
14*4bdff4beSrobert #include <__utility/move.h>
15*4bdff4beSrobert
16*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17*4bdff4beSrobert # pragma GCC system_header
18*4bdff4beSrobert #endif
19*4bdff4beSrobert
20*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD
21*4bdff4beSrobert
22*4bdff4beSrobert template <class _InputIterator1, class _InputIterator2, class _Tp>
23*4bdff4beSrobert _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
24*4bdff4beSrobert _Tp
inner_product(_InputIterator1 __first1,_InputIterator1 __last1,_InputIterator2 __first2,_Tp __init)25*4bdff4beSrobert inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init)
26*4bdff4beSrobert {
27*4bdff4beSrobert for (; __first1 != __last1; ++__first1, (void) ++__first2)
28*4bdff4beSrobert #if _LIBCPP_STD_VER > 17
29*4bdff4beSrobert __init = _VSTD::move(__init) + *__first1 * *__first2;
30*4bdff4beSrobert #else
31*4bdff4beSrobert __init = __init + *__first1 * *__first2;
32*4bdff4beSrobert #endif
33*4bdff4beSrobert return __init;
34*4bdff4beSrobert }
35*4bdff4beSrobert
36*4bdff4beSrobert template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>
37*4bdff4beSrobert _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
38*4bdff4beSrobert _Tp
inner_product(_InputIterator1 __first1,_InputIterator1 __last1,_InputIterator2 __first2,_Tp __init,_BinaryOperation1 __binary_op1,_BinaryOperation2 __binary_op2)39*4bdff4beSrobert inner_product(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2,
40*4bdff4beSrobert _Tp __init, _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2)
41*4bdff4beSrobert {
42*4bdff4beSrobert for (; __first1 != __last1; ++__first1, (void) ++__first2)
43*4bdff4beSrobert #if _LIBCPP_STD_VER > 17
44*4bdff4beSrobert __init = __binary_op1(_VSTD::move(__init), __binary_op2(*__first1, *__first2));
45*4bdff4beSrobert #else
46*4bdff4beSrobert __init = __binary_op1(__init, __binary_op2(*__first1, *__first2));
47*4bdff4beSrobert #endif
48*4bdff4beSrobert return __init;
49*4bdff4beSrobert }
50*4bdff4beSrobert
51*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD
52*4bdff4beSrobert
53*4bdff4beSrobert #endif // _LIBCPP___NUMERIC_INNER_PRODUCT_H
54