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

%   Copyright (c) 1984-98 by The MathWorks, Inc.
%   $Revision: 5.5 $  $Date: 1998/05/22 22:01:30 $
%   Built-in function.
