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1 | //---------------------------------------------------------------------------// |
2 | // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com> | |
3 | // | |
4 | // Distributed under the Boost Software License, Version 1.0 | |
5 | // See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt | |
7 | // | |
8 | // See http://boostorg.github.com/compute for more information. | |
9 | //---------------------------------------------------------------------------// | |
10 | ||
11 | #ifndef BOOST_COMPUTE_ALGORITHM_REMOVE_IF_HPP | |
12 | #define BOOST_COMPUTE_ALGORITHM_REMOVE_IF_HPP | |
13 | ||
14 | #include <boost/compute/system.hpp> | |
15 | #include <boost/compute/algorithm/copy_if.hpp> | |
16 | #include <boost/compute/container/vector.hpp> | |
17 | #include <boost/compute/functional/logical.hpp> | |
18 | ||
19 | namespace boost { | |
20 | namespace compute { | |
21 | ||
22 | /// Removes each element for which \p predicate returns \c true in the | |
23 | /// range [\p first, \p last). | |
24 | /// | |
25 | /// \see remove() | |
26 | template<class Iterator, class Predicate> | |
27 | inline Iterator remove_if(Iterator first, | |
28 | Iterator last, | |
29 | Predicate predicate, | |
30 | command_queue &queue = system::default_queue()) | |
31 | { | |
32 | typedef typename std::iterator_traits<Iterator>::value_type value_type; | |
33 | ||
34 | // temporary storage for the input data | |
35 | ::boost::compute::vector<value_type> tmp(first, last, queue); | |
36 | ||
37 | return ::boost::compute::copy_if(tmp.begin(), | |
38 | tmp.end(), | |
39 | first, | |
40 | not1(predicate), | |
41 | queue); | |
42 | } | |
43 | ||
44 | } // end compute namespace | |
45 | } // end boost namespace | |
46 | ||
47 | #endif // BOOST_COMPUTE_ALGORITHM_REMOVE_IF_HPP |