</td></tr>
<tr><td align="left"><br>N</td></tr>
<tr><td><a href="Interval2.html#VALneg_i">neg_i</a> [<a href="Interval2.html">Interval2</a>]</td>
<td><div class="info">
Interval negation <b>(optimal)</b>
</div>
</td></tr>
<tr><td><a href="Interval1.html#VALneg_i">neg_i</a> [<a href="Interval1.html">Interval1</a>]</td>
<td><div class="info">
Interval negation
</div>
</td></tr>
<tr><td align="left"><br>O</td></tr>
<tr><td><a href="Interval2.html#VALone_interval">one_interval</a> [<a href="Interval2.html">Inte