[R] Difference between R for the Mac and for Windows

[peter dalgaard]

[This is drifting somewhat awy from the original intention of the topic, I think].

This looks like a build dependency. I get 

3.3.2 (yeah, I know, should upgrade):

> (1+2i)/0
[1] NaN+NaNi

R-devel, march 24:

> (1+2i)/0
[1] Inf+Infi

on the *same* machine. The difference is that one is stock CRAN, the other was built locally. So with the toolchain being updated for 3.4.0, this difference would likely go away. Or at least change...

-pd


> On 31 Mar 2017, at 19:15 , Berend Hasselman <bhh at xs4all.nl> wrote:
> 
> 
> I have noted a difference between R on macOS en on Kubuntu Trusty (64bits) with complex division.
> I don't know what would happen R on Windows.
> 
> R.3.3.3:
> 
> macOS (10.11.6)
> -----------------
>> (1+2i)/0
> [1] NaN+NaNi
>> (-1+2i)/0
> [1] NaN+NaNi
>> 
>> 1i/0
> [1] NaN+NaNi
>> 1i/(0+0i)
> [1] NaN+NaNi
> 
> 
> KubuntuTrusty
> -----------------
>> (1+2i)/0
> [1] Inf+Infi
>> (-1+2i)/0
> [1] -Inf+Infi
>> 
>> 1i/0
> [1] NaN+Infi
>> 1i/(0+0i)
> [1] NaN+Infi
> 
> Interesting to see what R on Windows delivers.
> 
> Berend Hasselman
> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com