Re: [R] acos(0.5) == pi/3 FALSE

From: Peter Dalgaard <p.dalgaard_at_biostat.ku.dk>
Date: Mon 18 Sep 2006 - 21:09:34 GMT

Iņaki Murillo Arcos <inaki.murillo@ehu.es> writes:

> Hello,
>
> I don't know if the result of
>
> acos(0.5) == pi/3
>
> is a bug or not. It looks strange to me.

Have a look in the R FAQ:

> acos(0.5) - pi/3

[1] 2.220446e-16

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)                  FAX: (+45) 35327907

______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Received on Tue Sep 19 07:54:55 2006

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Mon 18 Sep 2006 - 22:30:05 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.