[Octave-bug-tracker] [bug #42587] chol incorrect claim about positive definite on sparse indefinite matrix

[Rik]

Update of bug #42587 (project octave):

                  Status:                    None => Fixed                  
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #4:

I fixed this on the stable branch in this changeset
(http://hg.savannah.gnu.org/hgweb/octave/rev/161b11e7da2d).  It will be a part
of the 3.8.2 bug fix release.

Incidentally, should the 3 output form work for full matrices, or does it only
work with sparse?


[R,p,Z] = chol (full (Q))

error: Invalid call to chol.  Correct usage is:

 -- Loadable Function: R = chol (A)
 -- Loadable Function: [R, P] = chol (A)
 -- Loadable Function: [R, P, Q] = chol (S)
 -- Loadable Function: [R, P, Q] = chol (S, "vector")
 -- Loadable Function: [L, ...] = chol (..., "lower")
 -- Loadable Function: [L, ...] = chol (..., "upper")


If you can verify that Matlab handles this for full matrices then maybe a
second bug report should be filed about that.


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