        </p>
<pre class="programlisting"><span class="identifier">RealType</span> <span class="identifier">degrees_of_freedom2</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
</pre>
<p>
            Returns the parameter <span class="emphasis"><em>v2</em></span> from which this object
            was constructed.
          </p>
<pre class="programlisting"><span class="identifier">RealType</span> <span class="identifier">non_centrality</span><span class="s