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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-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___CXX03___NUMERIC_PARTIAL_SUM_H11#define _LIBCPP___CXX03___NUMERIC_PARTIAL_SUM_H12 13#include <__cxx03/__config>14#include <__cxx03/__iterator/iterator_traits.h>15#include <__cxx03/__utility/move.h>16 17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)18# pragma GCC system_header19#endif20 21_LIBCPP_PUSH_MACROS22#include <__cxx03/__undef_macros>23 24_LIBCPP_BEGIN_NAMESPACE_STD25 26template <class _InputIterator, class _OutputIterator>27_LIBCPP_HIDE_FROM_ABI _OutputIterator28partial_sum(_InputIterator __first, _InputIterator __last, _OutputIterator __result) {29 if (__first != __last) {30 typename iterator_traits<_InputIterator>::value_type __t(*__first);31 *__result = __t;32 for (++__first, (void)++__result; __first != __last; ++__first, (void)++__result) {33 __t = __t + *__first;34 *__result = __t;35 }36 }37 return __result;38}39 40template <class _InputIterator, class _OutputIterator, class _BinaryOperation>41_LIBCPP_HIDE_FROM_ABI _OutputIterator42partial_sum(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryOperation __binary_op) {43 if (__first != __last) {44 typename iterator_traits<_InputIterator>::value_type __t(*__first);45 *__result = __t;46 for (++__first, (void)++__result; __first != __last; ++__first, (void)++__result) {47 __t = __binary_op(__t, *__first);48 *__result = __t;49 }50 }51 return __result;52}53 54_LIBCPP_END_NAMESPACE_STD55 56_LIBCPP_POP_MACROS57 58#endif // _LIBCPP___CXX03___NUMERIC_PARTIAL_SUM_H59