1*4bdff4beSrobert // -*- C++ -*-
2*4bdff4beSrobert //===----------------------------------------------------------------------===//
3*4bdff4beSrobert //
4*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information.
6*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7*4bdff4beSrobert //
8*4bdff4beSrobert //===----------------------------------------------------------------------===//
9*4bdff4beSrobert
10*4bdff4beSrobert #ifndef _LIBCPP___NUMERIC_TRANSFORM_EXCLUSIVE_SCAN_H
11*4bdff4beSrobert #define _LIBCPP___NUMERIC_TRANSFORM_EXCLUSIVE_SCAN_H
12*4bdff4beSrobert
13*4bdff4beSrobert #include <__config>
14*4bdff4beSrobert
15*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16*4bdff4beSrobert # pragma GCC system_header
17*4bdff4beSrobert #endif
18*4bdff4beSrobert
19*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD
20*4bdff4beSrobert
21*4bdff4beSrobert #if _LIBCPP_STD_VER > 14
22*4bdff4beSrobert
23*4bdff4beSrobert template <class _InputIterator, class _OutputIterator, class _Tp,
24*4bdff4beSrobert class _BinaryOp, class _UnaryOp>
25*4bdff4beSrobert _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
26*4bdff4beSrobert _OutputIterator
transform_exclusive_scan(_InputIterator __first,_InputIterator __last,_OutputIterator __result,_Tp __init,_BinaryOp __b,_UnaryOp __u)27*4bdff4beSrobert transform_exclusive_scan(_InputIterator __first, _InputIterator __last,
28*4bdff4beSrobert _OutputIterator __result, _Tp __init,
29*4bdff4beSrobert _BinaryOp __b, _UnaryOp __u)
30*4bdff4beSrobert {
31*4bdff4beSrobert if (__first != __last)
32*4bdff4beSrobert {
33*4bdff4beSrobert _Tp __saved = __init;
34*4bdff4beSrobert do
35*4bdff4beSrobert {
36*4bdff4beSrobert __init = __b(__init, __u(*__first));
37*4bdff4beSrobert *__result = __saved;
38*4bdff4beSrobert __saved = __init;
39*4bdff4beSrobert ++__result;
40*4bdff4beSrobert } while (++__first != __last);
41*4bdff4beSrobert }
42*4bdff4beSrobert return __result;
43*4bdff4beSrobert }
44*4bdff4beSrobert
45*4bdff4beSrobert #endif // _LIBCPP_STD_VER > 14
46*4bdff4beSrobert
47*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD
48*4bdff4beSrobert
49*4bdff4beSrobert #endif // _LIBCPP___NUMERIC_TRANSFORM_EXCLUSIVE_SCAN_H
50