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_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp 27 accumulate(_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 37 template <class _InputIterator, class _Tp, class _BinaryOperation> 38 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp 39 accumulate(_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