%SCHUR  Schur decomposition.
%   [U,T] = SCHUR(X) produces a Schur matrix T and a unitary
%   matrix U so that X = U*T*U' and U'*U = EYE(SIZE(U)).
%   X must be square.
%
%   T = SCHUR(X) returns just the Schur matrix T.
%
%   If X is complex, the Complex Schur Form is returned in matrix T.
%   The Complex Schur Form is upper triangular with the eigenvalues
%   of X on the diagonal.
%
%   If X is real, the Real Schur Form is returned.  The Real Schur
%   Form has the real eigenvalues on the diagonal and the complex
%   eigenvalues in 2-by-2 blocks on the diagonal.
%
%   See RSF2CSF to convert from Real to Complex Schur form.

%   Copyright (c) 1984-98 by The MathWorks, Inc.
%   $Revision: 5.7 $  $Date: 1998/08/27 15:28:15 $
%   Built-in function.
