more QR & Cholesky updating functions

[Jaroslav Hajek]

hello,

in addition to the function QRUPDATE, QRINSERT, QRDELETE and
CHOLUPDATE, I'm also implementing
QRSHIFT (circular column shift), CHOLINSERT (insert row&column),
CHOLDELETE (delete row&column) and
CHOLSHIFT (circular symmetric row&col shift). these four operations
supplement the already implemented four,
in a certain sense they "complete" the set of modifications that can
be done as level-2 operations with
Givens rotations. (note that any row permutation of QR is trivial).

The previous updating subroutines were wrapped as methods of the QR
and CHOL classes, with DEFUN wrappers
going in DLD-FUNCTIONS/qr.cc and chol.cc.
However, these latter four are not found in MATLAB (why?). Can I
follow the same scenario, or try implementing
them differently (perhaps in Octave-Forge)?


-- 
RNDr. Jaroslav Hajek
computing expert
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz