>

<p><a name="Item_003a-rombergtol"></a>
</p><dl>
<dt><u>Option variable:</u> <b>rombergtol</b>
<a name="IDX2568"></a>
</dt>
<dd><p>Default value: 1e-4
</p>
<p>The accuracy of <code>romberg</code> is governed by the global variables
<code>rombergabs</code> and <code>rombergtol</code>.
<code>romberg</code> terminates successfully when
the absolute difference between successive approximations is less than <code>rombergabs</code>,
or the relative difference in successive approximations is less than <code>romb