[Octave-bug-tracker] [bug #31742] sqp: incorrect order of removal of Inf bounds

[Olaf Till]

URL:
  <http://savannah.gnu.org/bugs/?31742>

                 Summary: sqp: incorrect order of removal of Inf bounds
                 Project: GNU Octave
            Submitted by: i7tiol
            Submitted on: Thu 02 Dec 2010 11:55:12 AM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: Olaf Till
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

This is a repost after data removal due to an intrusion into savannah at
2010-11-22/24. The original report was from 2010-11-23 and had the number
31747.

This bug was reported to the former bug-list, together with a patch, in
february 2010, but the patch was never applied. I would have brought the issue
to the tracker earlier, but I thought I had tested that some later changes by
Rik fixed it --- but there was obviously some mistake in my testing, since I
see now that the bug and the respective parts of the code are the same as
before. So here is it again:

There is a bug in the order in which sqp removes never-active Inf bounds,
triggered e.g. by (I had moved the file to a non-standard directory for
testing):


octave:3> [x, objf] = sqp ([1; 1], @ (x) sumsq ([1, 2, 4, 8, 20] - x(1) *
exp
(x(2) * (1:5))), [], [], [-1; -inf], [2; 2])
error: operator *: nonconformant arguments (op1 is 2x4, op2 is 3x1)
error: called from:
error:   /home/olaf/devel/octave/optim/sqp.m at line 478, column 9


A patch is attached (also includes a minor correction:

if (__sqp_lb__ > __sqp_ub__) ->
if (any (__sqp_lb__ > __sqp_ub__))

).




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File Attachments:


-------------------------------------------------------
Date: Thu 02 Dec 2010 11:55:12 AM GMT  Name: sqp-inf-bounds-removal.changeset
 Size: 3kB   By: i7tiol

<http://savannah.gnu.org/bugs/download.php?file_id=22087>

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