%TRIU Extract upper triangular part.
%   TRIU(X) is the upper triangular part of X.
%   TRIU(X,K) is the elements on and above the K-th diagonal of
%   X.  K = 0 is the main diagonal, K > 0 is above the main
%   diagonal and K < 0 is below the main diagonal.
%
%   See also TRIL, DIAG.

%   Copyright (c) 1984-98 by The MathWorks, Inc.
%   $Revision: 5.5 $  $Date: 1997/11/21 23:30:21 $
%   Built-in function.
