1e78f53d1SNikolas Klauser // -*- C++ -*- 2e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 3e78f53d1SNikolas Klauser // 4e78f53d1SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5e78f53d1SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information. 6e78f53d1SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7e78f53d1SNikolas Klauser // 8e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 9e78f53d1SNikolas Klauser 10*ce777190SNikolas Klauser #ifndef _LIBCPP___CXX03___NUMERIC_INCLUSIVE_SCAN_H 11*ce777190SNikolas Klauser #define _LIBCPP___CXX03___NUMERIC_INCLUSIVE_SCAN_H 12e78f53d1SNikolas Klauser 1373fbae83SNikolas Klauser #include <__cxx03/__config> 1473fbae83SNikolas Klauser #include <__cxx03/__functional/operations.h> 1573fbae83SNikolas Klauser #include <__cxx03/__iterator/iterator_traits.h> 1673fbae83SNikolas Klauser #include <__cxx03/__utility/move.h> 17e78f53d1SNikolas Klauser 18e78f53d1SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19e78f53d1SNikolas Klauser # pragma GCC system_header 20e78f53d1SNikolas Klauser #endif 21e78f53d1SNikolas Klauser 22e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 23e78f53d1SNikolas Klauser 24e78f53d1SNikolas Klauser #if _LIBCPP_STD_VER >= 17 25e78f53d1SNikolas Klauser 26e78f53d1SNikolas Klauser template <class _InputIterator, class _OutputIterator, class _Tp, class _BinaryOp> 27e78f53d1SNikolas Klauser _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator 28e78f53d1SNikolas Klauser inclusive_scan(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryOp __b, _Tp __init) { 29e78f53d1SNikolas Klauser for (; __first != __last; ++__first, (void)++__result) { 30e78f53d1SNikolas Klauser __init = __b(__init, *__first); 31e78f53d1SNikolas Klauser *__result = __init; 32e78f53d1SNikolas Klauser } 33e78f53d1SNikolas Klauser return __result; 34e78f53d1SNikolas Klauser } 35e78f53d1SNikolas Klauser 36e78f53d1SNikolas Klauser template <class _InputIterator, class _OutputIterator, class _BinaryOp> 37e78f53d1SNikolas Klauser _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator 38e78f53d1SNikolas Klauser inclusive_scan(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryOp __b) { 39e78f53d1SNikolas Klauser if (__first != __last) { 40e78f53d1SNikolas Klauser typename iterator_traits<_InputIterator>::value_type __init = *__first; 41e78f53d1SNikolas Klauser *__result++ = __init; 42e78f53d1SNikolas Klauser if (++__first != __last) 43e78f53d1SNikolas Klauser return std::inclusive_scan(__first, __last, __result, __b, __init); 44e78f53d1SNikolas Klauser } 45e78f53d1SNikolas Klauser 46e78f53d1SNikolas Klauser return __result; 47e78f53d1SNikolas Klauser } 48e78f53d1SNikolas Klauser 49e78f53d1SNikolas Klauser template <class _InputIterator, class _OutputIterator> 50e78f53d1SNikolas Klauser _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _OutputIterator 51e78f53d1SNikolas Klauser inclusive_scan(_InputIterator __first, _InputIterator __last, _OutputIterator __result) { 52e78f53d1SNikolas Klauser return std::inclusive_scan(__first, __last, __result, std::plus<>()); 53e78f53d1SNikolas Klauser } 54e78f53d1SNikolas Klauser 55e78f53d1SNikolas Klauser #endif // _LIBCPP_STD_VER >= 17 56e78f53d1SNikolas Klauser 57e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 58e78f53d1SNikolas Klauser 59*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___NUMERIC_INCLUSIVE_SCAN_H 60