Method set_range

include/boost/compute/algorithm/gather.hpp:33–45

    {}

    void set_range(MapIterator first,
                   MapIterator last,
                   InputIterator input,
                   OutputIterator result)
    {
        m_count = iterator_range_size(first, last);
        m_offset = first.get_index();

        *this <<
            "const uint i = get_global_id(0);\n" <<
            result[expr<uint_>("i")] << "=" << 
                input[first[expr<uint_>("i")]] << ";\n";
    }

    event exec(command_queue &queue)
    {