 vector</code>,</p></li>
<li><p>the remaining four arguments must be assignable to types
<code>vector</code>, <code>vector</code>, <code>real[]</code>, <code>int[]</code>, respectively and</p></li>
<li><p>the fourth and fifth arguments must be expressions
containing only variables originating from the data or transformed
data blocks.</p></li>
</ul>
<p>The <code>algebra_solver</code> function may accept three additional arguments,
which like the second, fourth, and fifth arguments, must be expressions free
o