On 16 Sep 2004, Peter Dalgaard wrote: > Tony Plate <[EMAIL PROTECTED]> writes: > > > difference?" (The fact that various people chimed in to say they > > could reproduce the behavior that bothered you, but didn't bother dig > > deeper suggests it didn't bother them that much, which further > > suggests that you are the person most motivated by this and thus the > > best candidate for investigating it further...) > > It could be well worth finding though. It's most likely a reliance on > uninitialized memory (the only other explanation I can think of is if > something is tampering with the FPU control word). That may be mostly > harmless if the algorithm converges - the sign is not well defined > anyway - but we have recently fixed a couple of bugs where the > occasional injection of NaN or Inf values caused real trouble.
valgrind found nothing, though, so the uninitialized memory is probably not in R. I suspect a problem with the version of msvcrt.dll in use (and probably related to use of the full FPU precision in R). And I do think the OP is making a very big deal out of something that is documented on the help page. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
