Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
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+//---------------------------------------------------------------------------//
+// 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