Strange behaviour of \ w.r.t. chol

[David Bateman]

Marco Caliari wrote:
>> The dpotrf function does not return info > 0 values
>
> Maybe I misunderstood, but in the dpotrf documentation it is written
>
> *  INFO    (output) INTEGER
> *          = 0:  successful exit
> *          < 0:  if INFO = -i, the i-th argument had an illegal value
> *          > 0:  if INFO = i, the leading minor of order i is not
> *                positive definite, and the factorization could not be
> *                completed.
>
> So, if INFO == 0 from dpotrf, I would keep the result in any case,
> with the warning in case of rcond small.
>
> Marco
>
Sorry I was basing my analysis on dpocon.f where there is no info>0...
You are of course correct... So yes we can implement matlab's behavior..
Its just a question of should we.. This will be quite an invasive patch,
and I won't want to tackle it till the mapper stuff is in the main
Octave repository and I'm sure there'll be conflicts

D.

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David Bateman                                David.Bateman at motorola.com
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