 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">math</span><span class="special">::</span><span class="identifier">policies</span><span class="special">::</span><span class="identifier">ignore_error</span><span class="special">;</span>
</pre>
<p>
            Using a typedef is convenient, especially if it is re-used, although
            it is not required, as the various examples below show.
          </p>
<pre class="programlisting"><span class="keyword">typed