52 lines
1.8 KiB
Plaintext
52 lines
1.8 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_COPY_N_HPP
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#define BOOST_COMPUTE_ALGORITHM_COPY_N_HPP
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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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namespace boost {
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namespace compute {
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/// Copies \p count elements from \p first to \p result.
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///
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/// For example, to copy four values from the host to the device:
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/// \code
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/// // values on the host and vector on the device
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/// float values[4] = { 1.f, 2.f, 3.f, 4.f };
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/// boost::compute::vector<float> vec(4, context);
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///
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/// // copy from the host to the device
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/// boost::compute::copy_n(values, 4, vec.begin(), queue);
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/// \endcode
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///
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/// \see copy()
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template<class InputIterator, class Size, class OutputIterator>
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inline OutputIterator copy_n(InputIterator first,
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Size count,
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OutputIterator result,
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command_queue &queue = system::default_queue())
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{
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typedef typename std::iterator_traits<InputIterator>::difference_type difference_type;
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return ::boost::compute::copy(first,
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first + static_cast<difference_type>(count),
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result,
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queue);
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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_COPY_N_HPP
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