14824e7fdSDimitry Andric // -*- C++ -*- 24824e7fdSDimitry Andric //===----------------------------------------------------------------------===// 34824e7fdSDimitry Andric // 44824e7fdSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 54824e7fdSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 64824e7fdSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 74824e7fdSDimitry Andric // 84824e7fdSDimitry Andric //===----------------------------------------------------------------------===// 94824e7fdSDimitry Andric 104824e7fdSDimitry Andric #ifndef _LIBCPP___NUMERIC_REDUCE_H 114824e7fdSDimitry Andric #define _LIBCPP___NUMERIC_REDUCE_H 124824e7fdSDimitry Andric 134824e7fdSDimitry Andric #include <__config> 144824e7fdSDimitry Andric #include <__functional/operations.h> 154824e7fdSDimitry Andric #include <__iterator/iterator_traits.h> 1606c3fb27SDimitry Andric #include <__utility/move.h> 174824e7fdSDimitry Andric 184824e7fdSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 194824e7fdSDimitry Andric # pragma GCC system_header 204824e7fdSDimitry Andric #endif 214824e7fdSDimitry Andric 224824e7fdSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 234824e7fdSDimitry Andric 2406c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 17 254824e7fdSDimitry Andric template <class _InputIterator, class _Tp, class _BinaryOp> 26*5f757f3fSDimitry Andric _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp reduce(_InputIterator __first, _InputIterator __last, 274824e7fdSDimitry Andric _Tp __init, _BinaryOp __b) { 284824e7fdSDimitry Andric for (; __first != __last; ++__first) 2906c3fb27SDimitry Andric __init = __b(std::move(__init), *__first); 304824e7fdSDimitry Andric return __init; 314824e7fdSDimitry Andric } 324824e7fdSDimitry Andric 334824e7fdSDimitry Andric template <class _InputIterator, class _Tp> 34*5f757f3fSDimitry Andric _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp reduce(_InputIterator __first, _InputIterator __last, 354824e7fdSDimitry Andric _Tp __init) { 36*5f757f3fSDimitry Andric return std::reduce(__first, __last, __init, std::plus<>()); 374824e7fdSDimitry Andric } 384824e7fdSDimitry Andric 394824e7fdSDimitry Andric template <class _InputIterator> 40*5f757f3fSDimitry Andric _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 typename iterator_traits<_InputIterator>::value_type 414824e7fdSDimitry Andric reduce(_InputIterator __first, _InputIterator __last) { 42*5f757f3fSDimitry Andric return std::reduce(__first, __last, typename iterator_traits<_InputIterator>::value_type{}); 434824e7fdSDimitry Andric } 444824e7fdSDimitry Andric #endif 454824e7fdSDimitry Andric 464824e7fdSDimitry Andric _LIBCPP_END_NAMESPACE_STD 474824e7fdSDimitry Andric 484824e7fdSDimitry Andric #endif // _LIBCPP___NUMERIC_REDUCE_H 49