">i</span><span class="special">++)</span> <span class="special">{</span>
    <span class="identifier">BOOST_TEST_INFO_SCOPE</span><span class="special">(</span><span class="string">"trial "</span> <span class="special">&lt;&lt;</span> <span class="identifier">i</span><span class="special">+</span><span class="number">1</span><span class="special">);</span>
    <span class="keyword">int</span> <span class="identifier">root1</span> <span class="special">=</span> <span class="identifier">dis</span><span class