%QRUPDATE Rank 1 update to QR factorization.
%   If [Q,R] = QR(A) is the original QR factorization of A, then
%   [Q1,R1] = QRUPDATE(Q,R,U,V) returns the QR factorization of A + U*V',
%   where U and V are column vectors of appropriate lengths.
%
%   QRUPDATE works only for full matrices.
%
%   See also QR, QRINSERT, QRDELETE.

%   Copyright 1984-2005 The MathWorks, Inc.
%   Built-in function.

