CFLib.org – Common Function Library Project

Description:
Returns the hyberbolic tangent of an angle. All angles are expressed in radians.

Return Values:
Returns a numeric value.

Example:

<CFSET x=Pi()/2>
  <CFOUTPUT>
  Given x=#x#<BR>
  The Tanh of #x# radians is: #Tanh(x)#
  </CFOUTPUT>

Parameters:

Full UDF Source:

/**
 * Returns the hyberbolic tangent of an angle.
 * 
 * @param x      Any angle measured in radians. 
 * @return Returns a numeric value. 
 * @author Joel Cox (jlcox@goodyear.com) 
 * @version 1, October 9, 2001 
 */
function Tanh(x){
  var tmp = Exp(2*x);
  return((tmp-1)/(tmp+1));
}