> <span class="special">-</span> <span class="number">0.975</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> <span class="comment">// 0.202</span>
</pre>
<p>
          (use of the complement gives a bit more clarity, and avoids potential loss
          of accuracy when <span class="emphasis"><em>x</em></span> is close to unity, see <a class="link" hre