function seed(new_seed)
%SEED Set new seed for function RANDOM0
% Function SEED sets a new seed for function 
% RANDOM0.  The new seed should be a positive
% integer.
 
% Define variables:
%   ISEED    -- Random number seed (global)
%   new_seed -- New seed

%  Record of revisions:
%      Date       Programmer          Description of change
%      ====       ==========          =====================
%    12/16/98    S. J. Chapman        Original code

% Declare globl values
global ISEED            % Seed for random number generator


% Check for a legal number of input arguments.
msg = nargchk(1,1,nargin);
error(msg);

% Save seed
new_seed = round(new_seed);
ISEED = abs(new_seed);