%TRIU	Upper triangle.
%	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.

%	Copyright (c) 1984-94 by The MathWorks, Inc.
%	Built-in function.
