63 lines
2.0 KiB
Plaintext
63 lines
2.0 KiB
Plaintext
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//---------------------------------------------------------------------------//
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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_REPLACE_COPY_HPP
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#define BOOST_COMPUTE_ALGORITHM_REPLACE_COPY_HPP
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#include <iterator>
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#include <boost/compute/system.hpp>
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#include <boost/compute/command_queue.hpp>
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#include <boost/compute/algorithm/copy.hpp>
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#include <boost/compute/algorithm/replace.hpp>
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namespace boost {
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namespace compute {
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/// Copies the value in the range [\p first, \p last) to the range
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/// beginning at \p result while replacing each instance of \p old_value
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/// with \p new_value.
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///
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/// \see replace()
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template<class InputIterator, class OutputIterator, class T>
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inline OutputIterator
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replace_copy(InputIterator first,
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InputIterator last,
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OutputIterator result,
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const T &old_value,
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const T &new_value,
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command_queue &queue = system::default_queue())
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{
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typedef typename std::iterator_traits<OutputIterator>::difference_type difference_type;
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difference_type count = std::distance(first, last);
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if(count == 0){
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return result;
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}
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// copy data to result
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::boost::compute::copy(first, last, result, queue);
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// replace in result
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::boost::compute::replace(result,
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result + count,
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old_value,
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new_value,
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queue);
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// return iterator to the end of result
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return result + count;
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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_REPLACE_COPY_HPP
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