ss="special">(</span><span class="identifier">a</span> <span class="special">*</span> <span class="identifier">a</span><span class="special">));</span>
      <span class="keyword">return</span> <span class="number">4</span> <span class="special">*</span> <span class="identifier">a</span> <span class="special">*</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">math</span><span class="special">::</span><span class="identifier">ellint_2</span><span class="spec