add boost on mac

macx64/include/boost/compute/algorithm/copy_n.hpp

@@ -0,0 +1,55 @@
+//---------------------------------------------------------------------------//
+// 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_COPY_N_HPP
+#define BOOST_COMPUTE_ALGORITHM_COPY_N_HPP
+
+#include <boost/compute/system.hpp>
+#include <boost/compute/command_queue.hpp>
+#include <boost/compute/algorithm/copy.hpp>
+
+namespace boost {
+namespace compute {
+
+/// Copies \p count elements from \p first to \p result.
+///
+/// For example, to copy four values from the host to the device:
+/// \code
+/// // values on the host and vector on the device
+/// float values[4] = { 1.f, 2.f, 3.f, 4.f };
+/// boost::compute::vector<float> vec(4, context);
+///
+/// // copy from the host to the device
+/// boost::compute::copy_n(values, 4, vec.begin(), queue);
+/// \endcode
+///
+/// Space complexity: \Omega(1)
+///
+/// \see copy()
+template<class InputIterator, class Size, class OutputIterator>
+inline OutputIterator copy_n(InputIterator first,
+                             Size count,
+                             OutputIterator result,
+                             command_queue &queue = system::default_queue(),
+                             const wait_list &events = wait_list())
+{
+    typedef typename std::iterator_traits<InputIterator>::difference_type difference_type;
+
+    return ::boost::compute::copy(first,
+                                  first + static_cast<difference_type>(count),
+                                  result,
+                                  queue,
+                                  events);
+}
+
+} // end compute namespace
+} // end boost namespace
+
+#endif // BOOST_COMPUTE_ALGORITHM_COPY_N_HPP