): Real; overload;</h4><br>
	Return sign of argument<br><ul><h5>parameters:</h5><li>AValue - Real</li></ul></td></tr>
<tr><td class='tname fname'>Sign</td><td class='tdesc'><h4>function Sign(const AValue: Single): Single; overload;</h4><br>
	Return sign of argument<br><ul><h5>parameters:</h5><li>AValue - Single (float)</li></ul></td></tr>
<tr><td class='tname fname'>hypot</td><td class='tdesc'><h4>function hypot(x,y : float) : float;</h4><br>
	Hypot returns the hypotenuse of the triangle where the sides adj