tifier">root2</span><span class="special">);</span> <span class="special">});</span>

    <span class="identifier">BOOST_TEST</span><span class="special">(</span><span class="identifier">estimated</span><span class="special">.</span><span class="identifier">first</span> <span class="special">==</span> <span class="keyword">double</span><span class="special">(</span><span class="identifier">root1</span><span class="special">),</span> <span class="number">10.</span> <span class="special">%</span> <span class=