"special">&amp;</span> <span class="identifier">v</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">Policy</span><span class="special">&amp;);</span>
</pre>
<p>
        The trunc functions round their argument to the integer value, nearest to
        but no larger in magnitude than the argument.
      </p>
<p>
        For example <code class="computeroutput"><span class="identifier">itrunc</span><span class="special">(</span><span class="number">3.7</span><span