span> <span class="identifier">nonfinite_num_get</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="number">0</span><span class="special">);</span>  <span class="comment">// legacy, sign_zero ...</span>
  <span class="special">};</span>
<span class="special">}}</span> <span class="comment">// namespace boost namespace math</span>
</pre>
<p>
      To use these facets
    </p>
<pre class="programlisting"><span 