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// Copyright (c) 2013 Kyle Lutz <>
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// See for more information.


#include <boost/static_assert.hpp>

#include <boost/compute/system.hpp>
#include <boost/compute/command_queue.hpp>
#include <boost/compute/algorithm/inclusive_scan.hpp>
#include <boost/compute/type_traits/is_device_iterator.hpp>

namespace boost {
namespace compute {

/// Calculates the cumulative sum of the elements in the range [\p first,
/// \p last) and writes the resulting values to the range beginning at
/// \p result.
/// Space complexity on GPUs: \Omega(n)<br>
/// Space complexity on GPUs when \p first == \p result: \Omega(2n)<br>
/// Space complexity on CPUs: \Omega(1)
template<class InputIterator, class OutputIterator>
inline OutputIterator
partial_sum(InputIterator first,
            InputIterator last,
            OutputIterator result,
            command_queue &queue = system::default_queue())
    return ::boost::compute::inclusive_scan(first, last, result, queue);

} // end compute namespace
} // end boost namespace