pan><span class="special">(</span><span class="identifier">RealType</span> <span class="identifier">r</span><span class="special">,</span> <span class="identifier">RealType</span> <span class="identifier">p</span><span class="special">);</span>
</pre>
<p>
          Constructor: <span class="emphasis"><em>r</em></span> is the total number of successes,
          <span class="emphasis"><em>p</em></span> is the probability of success of a single trial.
        </p>
<p>
          Requires: <code class="computer