function ext = mexext(platform)
%MEXEXT MEX filename extension for this platform. 
%   EXT = MEXEXT returns the file name extension for the current
%   PLATFORM. 

%   Copyright 1984-2000 The MathWorks, Inc. 
%   $Revision: 1.6 $  $Date: 2000/06/01 04:17:58 $
%   Built-in function.
