.html#type-t">t</a> list</span> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> option</span></code></dt><dd><p>function calls (sqrt, exp, ln ...) are handled here : given a function name and and a list of argument, it returns a possibly bottom result</p></dd></dl><dl><dt class="spec value" id="val-spawn"><a href="#val-spawn" class="anchor"></a><code><span class="keyword">val</span> spawn : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> float</code></dt><dd><p>generate a random floa