s="identifier">x</span><span class="special">)</span></code>).
        Now the singularity at zero is moved to +&#8734;, and the &#960;/2 bound to -log(&#960;/2).
        Initially our argument substituted function looks like:
      </p>
<pre class="programlisting"><span class="keyword">auto</span> <span class="identifier">f</span> <span class="special">=</span> <span class="special">[&amp;](</span><span class="keyword">double</span> <span class="identifier">x</span><span class="special">){</span> <span cla