Barton Willis <willisb@unk.edu> writes:
> Sometime ago, Stavros discovered a bug in Maxima's orderlessp
> function (bug 776441). This bug is so old (30+ years), it has been
> nicknamed the Methuselah bug. Wolfgang Jenkner proposed a fix for
> it, but I don't know if it has been thoroughly tested. Because nset
> uses orderlessp to order set members, the Methuselah bug can cause
> nset to misbehave.
Please let me just add that I didn't claim that this "fix" was more
than a palliative for the examples reported by Stavros. In the same
comment in
http://sourceforge.net/tracker/index.php?func=detail&aid=776441&group_id=4933&atid=104933
I also mentioned an even more basic example of misbehaviour, which
isn't fixed by this "fix".
Wolfgang