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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_EQUAL_RANGE_HPP | |
12 | #define BOOST_COMPUTE_ALGORITHM_EQUAL_RANGE_HPP | |
13 | ||
14 | #include <utility> | |
15 | ||
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16 | #include <boost/static_assert.hpp> |
17 | ||
7c673cae FG |
18 | #include <boost/compute/system.hpp> |
19 | #include <boost/compute/command_queue.hpp> | |
20 | #include <boost/compute/algorithm/lower_bound.hpp> | |
21 | #include <boost/compute/algorithm/upper_bound.hpp> | |
92f5a8d4 | 22 | #include <boost/compute/type_traits/is_device_iterator.hpp> |
7c673cae FG |
23 | |
24 | namespace boost { | |
25 | namespace compute { | |
26 | ||
27 | /// Returns a pair of iterators containing the range of values equal | |
28 | /// to \p value in the sorted range [\p first, \p last). | |
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29 | /// |
30 | /// Space complexity: \Omega(1) | |
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31 | template<class InputIterator, class T> |
32 | inline std::pair<InputIterator, InputIterator> | |
33 | equal_range(InputIterator first, | |
34 | InputIterator last, | |
35 | const T &value, | |
36 | command_queue &queue = system::default_queue()) | |
37 | { | |
92f5a8d4 | 38 | BOOST_STATIC_ASSERT(is_device_iterator<InputIterator>::value); |
7c673cae FG |
39 | return std::make_pair( |
40 | ::boost::compute::lower_bound(first, last, value, queue), | |
41 | ::boost::compute::upper_bound(first, last, value, queue) | |
42 | ); | |
43 | } | |
44 | ||
45 | } // end compute namespace | |
46 | } // end boost namespace | |
47 | ||
48 | #endif // BOOST_COMPUTE_ALGORITHM_EQUAL_RANGE_HPP |