s="special">-</span> <span class="number">4</span> <span class="special">*</span> <span class="identifier">c</span><span class="special">))</span> <span class="special">/</span> <span class="number">2</span><span class="special">);</span>
<span class="special">}</span>

<span class="identifier">BOOST_AUTO_TEST_CASE</span><span class="special">(</span><span class="identifier">quadratic_estimation</span><span class="special">)</span>
<span class="special">{</span>
  <span class="identifier">std</span><span cl