o">
Returns a lower bound of <code class="code">sin x</code>
</div>
</td></tr>
<tr><td><a href="Interval2.html#VALfsqr_high">fsqr_high</a> [<a href="Interval2.html">Interval2</a>]</td>
<td><div class="info">
Returns an upper bound of <code class="code">x^2</code> <b>(optimal)</b>
</div>
</td></tr>
<tr><td><a href="Interval1.html#VALfsqr_high">fsqr_high</a> [<a href="Interval1.html">Interval1</a>]</td>
<td><div class="info">
Returns an upper bound of <code class="code">x^2</code>
</div>
</td></tr>
<tr><td><a