 \]</span></p>
<!-- real; sum; (real[] x); -->
<p></p>
<p><code>real</code> <strong><code>sum</code></strong><code>(real[] x)</code><br>
The sum of the elements in x; see definition above.</p>
<!-- real; prod; (real[] x); -->
<p></p>
<p><code>real</code> <strong><code>prod</code></strong><code>(real[] x)</code><br>
The product of the elements in x, or 1 if x is size 0.</p>
<!-- real; prod; (int[] x); -->
<p></p>
<p><code>real</code> <strong><code>prod</code></strong><code>(int[] x)</code><br>
The product of