[R-SIG-Mac] dblepr for 64B R

[Roger Koenker]

My apologies,  call dblepr works precisely as it should my test
function neglected to declare the crucial variable double.....

url:    www.econ.uiuc.edu/~roger            Roger Koenker
email    rkoenker at uiuc.edu            Department of Economics
vox:     217-333-4558                University of Illinois
fax:       217-244-6678                Urbana, IL 61801

On Jun 16, 2010, at 4:24 PM, Roger Koenker wrote:

> I'm trying to understand why 64B R produces an insane answer/plot
> to the first
> 
> 	example(crq)
> 
> in my quantreg package, whereas 32B R produces a sane answer
> with the same data.  This involves some fortran and in my usual
> primitive fashion I've been trying to debug with fortran printing
> using the tried and true call dblepr.  However, in my test function
> call dblepr prints  values like 
> z
> [1] 1.644287e-313
> 
> even though the function returns the sane, correct values.  Is this
> a known issue, and if so is there an alternative strategy for
> printing from fortran in 64b R?
> 
> TIA for any enlightenment.
> Roger
> 
> PS.  In the hope that someone will tell me that all would be well
> if I only followed directions and upgraded R,  I'll sheepishly admit:
> 
>> sessionInfo()
> R version 2.11.0 Under development (unstable) (2010-02-18 r51149) 
> x86_64-apple-darwin9.8.0 
> 
> 
> PPS.  The fact that I can run 32B R on the same machine by simply
> typing R --arch i386  is one of the great advances of modern science
> in my opinion, or at least I thought so, until I discovered this discrepancy
> in what was being computed by the two versions.
> 
> 
> url:    www.econ.uiuc.edu/~roger            Roger Koenker
> email    rkoenker at uiuc.edu            Department of Economics
> vox:     217-333-4558                University of Illinois
> fax:       217-244-6678                Urbana, IL 61801
> 
> _______________________________________________
> R-SIG-Mac mailing list
> R-SIG-Mac at stat.math.ethz.ch
> https://stat.ethz.ch/mailman/listinfo/r-sig-mac