r1</span> first1<span class="special">,</span> <span class="identifier">InputIterator1</span> last1<span class="special">,</span> <span class="identifier">InputIterator2</span> first2<span class="special">,</span> 
        <span class="identifier">InputIterator2</span> last2<span class="special">,</span> <span class="identifier">OutputIterator</span> result<span class="special">,</span> <span class="identifier">Compare</span> comp<span class="special">,</span> 
        <span class="identifier">command_queue