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Diffstat (limited to 'boost/compute/algorithm/swap_ranges.hpp')
-rw-r--r-- | boost/compute/algorithm/swap_ranges.hpp | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/boost/compute/algorithm/swap_ranges.hpp b/boost/compute/algorithm/swap_ranges.hpp new file mode 100644 index 0000000000..6ff3e14f6a --- /dev/null +++ b/boost/compute/algorithm/swap_ranges.hpp @@ -0,0 +1,44 @@ +//---------------------------------------------------------------------------// +// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com> +// +// Distributed under the Boost Software License, Version 1.0 +// See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt +// +// See http://boostorg.github.com/compute for more information. +//---------------------------------------------------------------------------// + +#ifndef BOOST_COMPUTE_ALGORITHM_SWAP_RANGES_HPP +#define BOOST_COMPUTE_ALGORITHM_SWAP_RANGES_HPP + +#include <boost/compute/system.hpp> +#include <boost/compute/command_queue.hpp> +#include <boost/compute/algorithm/copy.hpp> +#include <boost/compute/container/vector.hpp> + +namespace boost { +namespace compute { + +/// Swaps the elements in the range [\p first1, \p last1) with the +/// elements in the range beginning at \p first2. +template<class Iterator1, class Iterator2> +inline Iterator2 swap_ranges(Iterator1 first1, + Iterator1 last1, + Iterator2 first2, + command_queue &queue = system::default_queue()) +{ + typedef typename std::iterator_traits<Iterator1>::value_type value_type; + + Iterator2 last2 = first2 + std::distance(first1, last1); + + ::boost::compute::vector<value_type> tmp(first1, last1, queue); + ::boost::compute::copy(first2, last2, first1, queue); + ::boost::compute::copy(tmp.begin(), tmp.end(), first2, queue); + + return last2; +} + +} // end compute namespace +} // end boost namespace + +#endif // BOOST_COMPUTE_ALGORITHM_SWAP_RANGES_HPP |