FM / algorithm

/usr/include/boost/compute/algorithm

Name	Size	Mode	Actions
detail/	-	0755	rm
accumulate.hpp	6375	0644	edit dl rm
adjacent_difference.hpp	4416	0644	edit dl rm
adjacent_find.hpp	5313	0644	edit dl rm
all_of.hpp	1427	0644	edit dl rm
any_of.hpp	1544	0644	edit dl rm
binary_search.hpp	1480	0644	edit dl rm
copy.hpp	31483	0644	edit dl rm
copy_if.hpp	2574	0644	edit dl rm
copy_n.hpp	1940	0644	edit dl rm
count.hpp	2103	0644	edit dl rm
count_if.hpp	2388	0644	edit dl rm
equal.hpp	2209	0644	edit dl rm
equal_range.hpp	1636	0644	edit dl rm
exclusive_scan.hpp	4042	0644	edit dl rm
fill.hpp	10030	0644	edit dl rm
fill_n.hpp	1367	0644	edit dl rm
find.hpp	2004	0644	edit dl rm
find_end.hpp	4772	0644	edit dl rm
find_if.hpp	1504	0644	edit dl rm
find_if_not.hpp	1652	0644	edit dl rm
for_each.hpp	2131	0644	edit dl rm
for_each_n.hpp	1423	0644	edit dl rm
gather.hpp	2796	0644	edit dl rm
generate.hpp	1903	0644	edit dl rm
generate_n.hpp	1277	0644	edit dl rm
includes.hpp	5615	0644	edit dl rm
inclusive_scan.hpp	3402	0644	edit dl rm
inner_product.hpp	3849	0644	edit dl rm
inplace_merge.hpp	2047	0644	edit dl rm
iota.hpp	1735	0644	edit dl rm
is_partitioned.hpp	1785	0644	edit dl rm
is_permutation.hpp	2744	0644	edit dl rm
is_sorted.hpp	2436	0644	edit dl rm
lexicographical_compare.hpp	4950	0644	edit dl rm
lower_bound.hpp	1573	0644	edit dl rm
max_element.hpp	2781	0644	edit dl rm
merge.hpp	5037	0644	edit dl rm
minmax_element.hpp	2668	0644	edit dl rm
min_element.hpp	2780	0644	edit dl rm
mismatch.hpp	3409	0644	edit dl rm
next_permutation.hpp	5703	0644	edit dl rm
none_of.hpp	1426	0644	edit dl rm
nth_element.hpp	2868	0644	edit dl rm
partial_sum.hpp	1676	0644	edit dl rm
partition.hpp	1523	0644	edit dl rm
partition_copy.hpp	2592	0644	edit dl rm
partition_point.hpp	1858	0644	edit dl rm
prev_permutation.hpp	5695	0644	edit dl rm
random_shuffle.hpp	3010	0644	edit dl rm
reduce.hpp	11454	0644	edit dl rm
reduce_by_key.hpp	5933	0644	edit dl rm
remove.hpp	2002	0644	edit dl rm
remove_if.hpp	1850	0644	edit dl rm
replace.hpp	2588	0644	edit dl rm
replace_copy.hpp	2230	0644	edit dl rm
reverse.hpp	2438	0644	edit dl rm
reverse_copy.hpp	2678	0644	edit dl rm
rotate.hpp	1813	0644	edit dl rm
rotate_copy.hpp	1529	0644	edit dl rm
scatter.hpp	3435	0644	edit dl rm
scatter_if.hpp	4730	0644	edit dl rm
search.hpp	2967	0644	edit dl rm
search_n.hpp	4428	0644	edit dl rm
set_difference.hpp	6941	0644	edit dl rm
set_intersection.hpp	6646	0644	edit dl rm
set_symmetric_difference.hpp	7533	0644	edit dl rm
set_union.hpp	7384	0644	edit dl rm
sort.hpp	6569	0644	edit dl rm
sort_by_key.hpp	6156	0644	edit dl rm
stable_partition.hpp	2737	0644	edit dl rm
stable_sort.hpp	3809	0644	edit dl rm
stable_sort_by_key.hpp	6071	0644	edit dl rm
swap_ranges.hpp	1870	0644	edit dl rm
transform.hpp	3252	0644	edit dl rm
transform_if.hpp	4737	0644	edit dl rm
transform_reduce.hpp	3683	0644	edit dl rm
unique.hpp	2565	0644	edit dl rm
unique_copy.hpp	6429	0644	edit dl rm
upper_bound.hpp	1561	0644	edit dl rm

Edit: /usr/include/boost/compute/algorithm/merge.hpp (5037B)

//---------------------------------------------------------------------------//
// 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_MERGE_HPP
#define BOOST_COMPUTE_ALGORITHM_MERGE_HPP

#include <boost/static_assert.hpp>

#include <boost/compute/system.hpp>
#include <boost/compute/command_queue.hpp>
#include <boost/compute/algorithm/copy.hpp>
#include <boost/compute/algorithm/detail/merge_with_merge_path.hpp>
#include <boost/compute/algorithm/detail/serial_merge.hpp>
#include <boost/compute/detail/iterator_range_size.hpp>
#include <boost/compute/detail/parameter_cache.hpp>
#include <boost/compute/type_traits/is_device_iterator.hpp>

namespace boost {
namespace compute {

/// Merges the sorted values in the range [\p first1, \p last1) with the sorted
/// values in the range [\p first2, last2) and stores the result in the range
/// beginning at \p result. Values are compared using the \p comp function. If
/// no comparision function is given, \c less is used.
///
/// \param first1 first element in the first range to merge
/// \param last1 last element in the first range to merge
/// \param first2 first element in the second range to merge
/// \param last2 last element in the second range to merge
/// \param result first element in the result range
/// \param comp comparison function (by default \c less)
/// \param queue command queue to perform the operation
///
/// \return \c OutputIterator to the end of the result range
///
/// Space complexity: \Omega(distance(\p first1, \p last1) + distance(\p first2, \p last2))
///
/// \see inplace_merge()
template<class InputIterator1,
         class InputIterator2,
         class OutputIterator,
         class Compare>
inline OutputIterator merge(InputIterator1 first1,
                            InputIterator1 last1,
                            InputIterator2 first2,
                            InputIterator2 last2,
                            OutputIterator result,
                            Compare comp,
                            command_queue &queue = system::default_queue())
{
    BOOST_STATIC_ASSERT(is_device_iterator<InputIterator1>::value);
    BOOST_STATIC_ASSERT(is_device_iterator<InputIterator2>::value);
    BOOST_STATIC_ASSERT(is_device_iterator<OutputIterator>::value);
    typedef typename std::iterator_traits<InputIterator1>::value_type input1_type;
    typedef typename std::iterator_traits<InputIterator2>::value_type input2_type;
    typedef typename std::iterator_traits<OutputIterator>::value_type output_type;

const device &device = queue.get_device();

std::string cache_key =
        std::string("__boost_merge_") + type_name<input1_type>() + "_"
        + type_name<input2_type>() + "_" + type_name<output_type>();
    boost::shared_ptr<detail::parameter_cache> parameters =
        detail::parameter_cache::get_global_cache(device);

// default serial merge threshold depends on device type
    size_t default_serial_merge_threshold = 32768;
    if(device.type() & device::gpu) {
        default_serial_merge_threshold = 2048;
    }

// loading serial merge threshold parameter
    const size_t serial_merge_threshold =
        parameters->get(cache_key, "serial_merge_threshold",
                        static_cast<uint_>(default_serial_merge_threshold));

// choosing merge algorithm
    const size_t total_count =
        detail::iterator_range_size(first1, last1)
        + detail::iterator_range_size(first2, last2);
    // for small inputs serial merge turns out to outperform
    // merge with merge path algorithm
    if(total_count <= serial_merge_threshold){
       return detail::serial_merge(first1, last1, first2, last2, result, comp, queue);
    }
    return detail::merge_with_merge_path(first1, last1, first2, last2, result, comp, queue);
}

/// \overload
template<class InputIterator1, class InputIterator2, class OutputIterator>
inline OutputIterator merge(InputIterator1 first1,
                            InputIterator1 last1,
                            InputIterator2 first2,
                            InputIterator2 last2,
                            OutputIterator result,
                            command_queue &queue = system::default_queue())
{
    BOOST_STATIC_ASSERT(is_device_iterator<InputIterator1>::value);
    BOOST_STATIC_ASSERT(is_device_iterator<InputIterator2>::value);
    BOOST_STATIC_ASSERT(is_device_iterator<OutputIterator>::value);
    typedef typename std::iterator_traits<InputIterator1>::value_type value_type;
    less<value_type> less_than;
    return merge(first1, last1, first2, last2, result, less_than, queue);
}

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

#endif // BOOST_COMPUTE_ALGORITHM_MERGE_HPP

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