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_BEGIN_NAMESPACE_STD
21
22 template <class _InputIterator, class _Tp>
23 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
24 _Tp
accumulate(_InputIterator __first,_InputIterator __last,_Tp __init)25 accumulate(_InputIterator __first, _InputIterator __last, _Tp __init)
26 {
27 for (; __first != __last; ++__first)
28 #if _LIBCPP_STD_VER > 17
29 __init = _VSTD::move(__init) + *__first;
30 #else
31 __init = __init + *__first;
32 #endif
33 return __init;
34 }
35
36 template <class _InputIterator, class _Tp, class _BinaryOperation>
37 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
38 _Tp
accumulate(_InputIterator __first,_InputIterator __last,_Tp __init,_BinaryOperation __binary_op)39 accumulate(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOperation __binary_op)
40 {
41 for (; __first != __last; ++__first)
42 #if _LIBCPP_STD_VER > 17
43 __init = __binary_op(_VSTD::move(__init), *__first);
44 #else
45 __init = __binary_op(__init, *__first);
46 #endif
47 return __init;
48 }
49
50 _LIBCPP_END_NAMESPACE_STD
51
52 #endif // _LIBCPP___NUMERIC_ACCUMULATE_H
53