function s = ddex1hist(t)
%DDEX1HIST  A history function for using with DDEX1DE.
%
%   See also DDE23.

%   Jacek Kierzenka, Lawrence F. Shampine and Skip Thompson
%   Copyright 1984-2002 The MathWorks, Inc.
%   $Revision: 1.2 $  $Date: 2002/04/15 03:35:30 $

s = [ 1
      1
      1 ];