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_REDUCE_H 11*ce777190SNikolas Klauser #define _LIBCPP___CXX03___NUMERIC_REDUCE_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_PUSH_MACROS 2373fbae83SNikolas Klauser #include <__cxx03/__undef_macros> 24e78f53d1SNikolas Klauser 25e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 26e78f53d1SNikolas Klauser 27e78f53d1SNikolas Klauser #if _LIBCPP_STD_VER >= 17 28e78f53d1SNikolas Klauser template <class _InputIterator, class _Tp, class _BinaryOp> 29e78f53d1SNikolas Klauser _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp 30e78f53d1SNikolas Klauser reduce(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOp __b) { 31e78f53d1SNikolas Klauser for (; __first != __last; ++__first) 32e78f53d1SNikolas Klauser __init = __b(std::move(__init), *__first); 33e78f53d1SNikolas Klauser return __init; 34e78f53d1SNikolas Klauser } 35e78f53d1SNikolas Klauser 36e78f53d1SNikolas Klauser template <class _InputIterator, class _Tp> 37e78f53d1SNikolas Klauser _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp 38e78f53d1SNikolas Klauser reduce(_InputIterator __first, _InputIterator __last, _Tp __init) { 39e78f53d1SNikolas Klauser return std::reduce(__first, __last, __init, std::plus<>()); 40e78f53d1SNikolas Klauser } 41e78f53d1SNikolas Klauser 42e78f53d1SNikolas Klauser template <class _InputIterator> 43e78f53d1SNikolas Klauser _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 typename iterator_traits<_InputIterator>::value_type 44e78f53d1SNikolas Klauser reduce(_InputIterator __first, _InputIterator __last) { 45e78f53d1SNikolas Klauser return std::reduce(__first, __last, typename iterator_traits<_InputIterator>::value_type{}); 46e78f53d1SNikolas Klauser } 47e78f53d1SNikolas Klauser #endif 48e78f53d1SNikolas Klauser 49e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 50e78f53d1SNikolas Klauser 51e78f53d1SNikolas Klauser _LIBCPP_POP_MACROS 52e78f53d1SNikolas Klauser 53*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___NUMERIC_REDUCE_H 54