/span><span class="special">;</span>

   <span class="comment">//</span>
   <span class="comment">// Print true value for comparison:</span>
   <span class="comment">// 0.166369383786814073512678524315131594371033482453329</span>
   <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">math</span><span class="special">::</span><sp