64 lines
2.3 KiB
Plaintext
64 lines
2.3 KiB
Plaintext
//---------------------------------------------------------------------------//
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// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#ifndef BOOST_COMPUTE_ALGORITHM_PARTITION_COPY_HPP
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#define BOOST_COMPUTE_ALGORITHM_PARTITION_COPY_HPP
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#include <boost/compute/system.hpp>
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#include <boost/compute/functional.hpp>
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#include <boost/compute/command_queue.hpp>
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#include <boost/compute/algorithm/copy_if.hpp>
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namespace boost {
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namespace compute {
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/// Copies all of the elements in the range [\p first, \p last) for which
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/// \p predicate returns \c true to the range beginning at \p first_true
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/// and all of the elements for which \p predicate returns \c false to
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/// the range beginning at \p first_false.
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///
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/// \see partition()
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template<class InputIterator,
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class OutputIterator1,
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class OutputIterator2,
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class UnaryPredicate>
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inline std::pair<OutputIterator1, OutputIterator2>
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partition_copy(InputIterator first,
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InputIterator last,
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OutputIterator1 first_true,
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OutputIterator2 first_false,
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UnaryPredicate predicate,
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command_queue &queue = system::default_queue())
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{
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// copy true values
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OutputIterator1 last_true =
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::boost::compute::copy_if(first,
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last,
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first_true,
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predicate,
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queue);
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// copy false values
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OutputIterator2 last_false =
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::boost::compute::copy_if(first,
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last,
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first_false,
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not1(predicate),
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queue);
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// return iterators to the end of the true and the false ranges
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return std::make_pair(last_true, last_false);
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}
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} // end compute namespace
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} // end boost namespace
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#endif // BOOST_COMPUTE_ALGORITHM_PARTITION_COPY_HPP
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