function y = tanh(xin)
%TANH   Hyperbolic tangent.
%   TANH(X) is the hyperbolic tangent of the elements of X.

%   Copyright 1984-2000 The MathWorks, Inc. 
%   $Revision: 5.7 $  $Date: 2000/06/01 00:40:25 $
%   Built-in function.
