Re: Re: Problem with function geev

Paul Ledbetter III <[email protected]> Wed, 10 Aug 2005 07:35:27 -0500
Newsgroups gmane.lisp.matlisp.user
Message-ID <[email protected]>
My email probably seemed somewhat strange coming after yours, since we
came to similar conclusions.  My first email was delayed by more than
a day(for moderation purposes?) and you verified what I was asking for
before it could arrive :)

As I think we have both found, just about any change in the code
before that loop causes dlamch to behave correctly.  I chose to set
B=2 because it's a trivial improvement to the LAPACK code(it
eliminates an unnecessary loop iteration).

I have witnessed the error on two computers, one with a celeron cpu,
and the other with a pentium III.  In both cases I am using cmucl-19b
on FreeBSD 5.4.  My f77 on both is 3.4.2.

This bug is annoying.  I hope this helps.

Paul


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