</a> <span class="special">&amp;</span><span class="special">,</span> 
                         <span class="keyword">const</span> <a class="link" href="negative_binom_idp82638048.html" title="Class template negative_binomial_distribution">negative_binomial_distribution</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="negative_binom_idp82638048.html#idp82677712-bb">