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-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP___NUMERIC_ACCUMULATE_H
11#define _LIBCPP___NUMERIC_ACCUMULATE_H
12
13#include <__config>
14#include <__utility/move.h>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17# pragma GCC system_header
18#endif
19
20_LIBCPP_PUSH_MACROS
21#include <__undef_macros>
22
23_LIBCPP_BEGIN_NAMESPACE_STD
24
25template <class _InputIterator, class _Tp>
26_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp
27accumulate(_InputIterator __first, _InputIterator __last, _Tp __init) {
28 for (; __first != __last; ++__first)
29#if _LIBCPP_STD_VER >= 20
30 __init = std::move(__init) + *__first;
31#else
32 __init = __init + *__first;
33#endif
34 return __init;
35}
36
37template <class _InputIterator, class _Tp, class _BinaryOperation>
38_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp
39accumulate(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOperation __binary_op) {
40 for (; __first != __last; ++__first)
41#if _LIBCPP_STD_VER >= 20
42 __init = __binary_op(std::move(__init), *__first);
43#else
44 __init = __binary_op(__init, *__first);
45#endif
46 return __init;
47}
48
49_LIBCPP_END_NAMESPACE_STD
50
51_LIBCPP_POP_MACROS
52
53#endif // _LIBCPP___NUMERIC_ACCUMULATE_H
54