Re: R-beta: exponentiation

Douglas Bates (bates@stat.wisc.edu)
24 Apr 1998 08:30:47 -0500


To: Peter Dalgaard BSA <p.dalgaard@biostat.ku.dk>
Subject: Re: R-beta: exponentiation
From: Douglas Bates <bates@stat.wisc.edu>
Date: 24 Apr 1998 08:30:47 -0500
In-Reply-To: Peter Dalgaard BSA's message of 24 Apr 1998 10:19:16 +0200

Peter Dalgaard BSA <p.dalgaard@biostat.ku.dk> writes:

> Martin Maechler <maechler@stat.math.ethz.ch> writes:
> > >>>>> "Jim" == Jim Lindsey <jlindsey@luc.ac.be> writes:
> > 
> >     Jim> Values in the range 1e-30^1e12 to 1e-30^1e17 hang R0.61.2 under
> >     Jim> Red Hat 5. (fed by nlm to a function). This is rather difficult to
> >     Jim> debug when ctrl-C does not work!  Jim
> > 
> > yet another Linux (libc ?? / libm ??) problem...
> > 
> > I can confirm the same thing happens on Debian Linux.
> 
> - but not RedHat 4.2.... Yup. Has to be libc. Doug, tried Debian 2.0?

If I understand the question correctly then the answer is that it
works fine under Debian 2.0 (libc6-2.0.7).

 R : Copyright 1998, Robert Gentleman and Ross Ihaka
 Version 0.62.0 Unstable (March 31, 1998)

 R> 1e-30
 [1] 1e-30
 R> 1e-30^1e12
 [1] 0
 R> 1e-30^1e17
 [1] 0

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