| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___NUMERIC_REDUCE_H |
| #define _LIBCPP___NUMERIC_REDUCE_H |
| |
| #include <__config> |
| #include <__functional/operations.h> |
| #include <__iterator/iterator_traits.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if _LIBCPP_STD_VER > 14 |
| template <class _InputIterator, class _Tp, class _BinaryOp> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _Tp reduce(_InputIterator __first, _InputIterator __last, |
| _Tp __init, _BinaryOp __b) { |
| for (; __first != __last; ++__first) |
| __init = __b(__init, *__first); |
| return __init; |
| } |
| |
| template <class _InputIterator, class _Tp> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _Tp reduce(_InputIterator __first, _InputIterator __last, |
| _Tp __init) { |
| return _VSTD::reduce(__first, __last, __init, _VSTD::plus<>()); |
| } |
| |
| template <class _InputIterator> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 typename iterator_traits<_InputIterator>::value_type |
| reduce(_InputIterator __first, _InputIterator __last) { |
| return _VSTD::reduce(__first, __last, typename iterator_traits<_InputIterator>::value_type{}); |
| } |
| #endif |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___NUMERIC_REDUCE_H |
