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 
25 template <class _InputIterator, class _Tp>
26 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
27 _Tp
28 accumulate(_InputIterator __first, _InputIterator __last, _Tp __init)
29 {
30     for (; __first != __last; ++__first)
31 #if _LIBCPP_STD_VER >= 20
32         __init = _VSTD::move(__init) + *__first;
33 #else
34         __init = __init + *__first;
35 #endif
36     return __init;
37 }
38 
39 template <class _InputIterator, class _Tp, class _BinaryOperation>
40 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
41 _Tp
42 accumulate(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOperation __binary_op)
43 {
44     for (; __first != __last; ++__first)
45 #if _LIBCPP_STD_VER >= 20
46         __init = __binary_op(_VSTD::move(__init), *__first);
47 #else
48         __init = __binary_op(__init, *__first);
49 #endif
50     return __init;
51 }
52 
53 _LIBCPP_END_NAMESPACE_STD
54 
55 _LIBCPP_POP_MACROS
56 
57 #endif // _LIBCPP___NUMERIC_ACCUMULATE_H
58