square root function</dd>
<dt class="col-md-4"> <samp>tan(</samp><var>x</var><samp>)</samp></dt><dd class="col-md-8"> tangent function</dd>
<dt class="col-md-4"> <samp>tanh(</samp><var>x</var><samp>)</samp></dt><dd class="col-md-8"> hyperbolic tangent function</dd>
<dt class="col-md-4"> <samp>trunc(</samp><var>x</var><samp>)</samp></dt><dd class="col-md-8"> round to integer, towards zero</dd>
<dt class="col-md-4"> <samp>while(</samp><var>condition</var>, <var>statements</var><samp>)</samp></dt><dd class="co