>)/(<var>pi*x</var>)]<sup>2</sup></dd>
<dt class="col-md-4"> <samp>alt(</samp><var>x</var><samp>)</samp></dt><dd class="col-md-8"> sign alternation function (return 1.0 if int(<var>x</var>) is even, -1.0 if int(<var>x</var>) is odd)</dd>
<dt class="col-md-4"> <samp>asin(</samp><var>x</var><samp>)</samp></dt><dd class="col-md-8"> arc sine function</dd>
<dt class="col-md-4"> <samp>asinh(</samp><var>x</var><samp>)</samp></dt><dd class="col-md-8"> inverse hyperbolic sine function</dd>
<dt class="col-md-4"> <sam