Re: [Bug-glpk] glp_warm_up

[Andrew Makhorin]

Hi Xypron,

> > The bug in lpx_check_kkt was fixed incorrectly. Please DO NOT USE the
> > patch.
> 
> I have been distributing the patch in GLPL for Windows 4.48-2. I have
> now set the default download to version 4.48-1 which does not contain
> the patch. Will you provide a revised patch for lpx_check_kkt or was
> the original coding correct?

The former version of lpx_check_kkt is correct, however, it lacks a
check for complementary slackness, which is needed for basic as well as
for interior-point solutions. The patch was incorrect just because in
interior-point solutions variables have no statuses.

> How about the preceding patch? Was that one correct? Or should the
> unpatched GLPK 4.48 be used?

glp_warm_up was patched correctly.


Best,

Andrew Makhorin