ass="section" id="id847">
<h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
<p>A <a class="reference internal" href="./numeric-metafunction.html">Numeric Metafunction</a> is a <a class="reference internal" href="./tag-dispatched-metafunction.html">Tag Dispatched Metafunction</a> that provides
a built-in infrastructure for easy implementation of mixed-type operations.</p>
</div>
<div class="section" id="id848">
<h3><a class="subsection-title" href="#expression-requir