t">Note</th>
</tr>
<tr><td align="left" valign="top"><p>
        Previously defined constants like pi and e can be used, but by <span class="bold"><strong>not simply calling</strong></span> <code class="computeroutput"><span class="identifier">pi</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;()</span></code>;
        specifying the precision via the policy <code class="computeroutput"><span class="identifier">pi</span><span class="special">&lt;</span><span