function y = cosh(xin)
%COSH   Hyperbolic cosine.
%   COSH(X) is the hyperbolic cosine of the elements of X.

%   Copyright (c) 1984-98 by The MathWorks, Inc.
%   $Revision: 5.6 $  $Date: 1998/05/22 22:01:32 $
%   Built-in function.
