function sys = uminus(sys)
%UMINUS  Unary minus for LTI models.
%
%   MSYS = UMINUS(SYS) is invoked by MSYS = -SYS.
%
%   See also MINUS, LTIMODELS.

%   Author(s): S. Almy
%   Copyright (c) 1986-98 by The MathWorks, Inc.
%   $Revision: 1.1 $  $Date: 1998/04/14 21:40:38 $

% Effect on other properties: None

sys.ResponseData = -sys.ResponseData;

