blob: d3b4329a0a148b737db8f17e39c86a600aa0789c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/*
Copyright (c) Marshall Clow 2017.
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE10.txt or copy at http://www.boost.org/LICENSE10.txt)
*/
/// \file transform_exclusive_scan.hpp
/// \brief ????
/// \author Marshall Clow
#ifndef BOOST_ALGORITHM_TRANSFORM_EXCLUSIVE_SCAN_HPP
#define BOOST_ALGORITHM_TRANSFORM_EXCLUSIVE_SCAN_HPP
#include <functional> // for std::plus
#include <iterator> // for std::iterator_traits
#include <boost/range/begin.hpp>
#include <boost/range/end.hpp>
#include <boost/range/value_type.hpp>
namespace boost { namespace algorithm {
template<class InputIterator, class OutputIterator, class T,
class BinaryOperation, class UnaryOperation>
OutputIterator transform_exclusive_scan(InputIterator first, InputIterator last,
OutputIterator result, T init,
BinaryOperation bOp, UnaryOperation uOp)
{
if (first != last)
{
T saved = init;
do
{
init = bOp(init, uOp(*first));
*result = saved;
saved = init;
++result;
} while (++first != last);
}
return result;
}
}} // namespace boost and algorithm
#endif // BOOST_ALGORITHM_TRANSFORM_EXCLUSIVE_SCAN_HPP
|
