special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
    <span class="identifier">cudaFreeHost</span><span class="special">(</span> <span class="identifier">host_a</span><span class="special">);</span>
    <span class="identifier">cudaFreeHost</span><span class="special">(</span> <span class="identifier">host_b</span><span class="special">);</span>
    <span class="identifier">cudaFreeHost</span><span cl