| // -*- 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_TRANSFORM_EXCLUSIVE_SCAN_H |
| #define _LIBCPP___NUMERIC_TRANSFORM_EXCLUSIVE_SCAN_H |
| |
| #include <__config> |
| |
| #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 _OutputIterator, class _Tp, |
| class _BinaryOp, class _UnaryOp> |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 |
| _OutputIterator |
| transform_exclusive_scan(_InputIterator __first, _InputIterator __last, |
| _OutputIterator __result, _Tp __init, |
| _BinaryOp __b, _UnaryOp __u) |
| { |
| if (__first != __last) |
| { |
| _Tp __saved = __init; |
| do |
| { |
| __init = __b(__init, __u(*__first)); |
| *__result = __saved; |
| __saved = __init; |
| ++__result; |
| } while (++__first != __last); |
| } |
| return __result; |
| } |
| |
| #endif // _LIBCPP_STD_VER > 14 |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___NUMERIC_TRANSFORM_EXCLUSIVE_SCAN_H |
