[R] help for the first poster- a simple question

[Gabor Csardi]

R FAQ 7.31. G.

On Mon, Mar 03, 2008 at 12:52:43PM -0500, Xuejun Qin wrote:
> Hi, there, 
> I cannot  get accurate value  for calculation.
> for example:
> ld<-sqrt(1*0.05*0.95*0.05*0.95)
> 0.05*0.95-ld=-6.938894e-18
> 0.05*0.95-ld==0 is False.
> 
> I met this problem in my program, how can I handle it. Thanks.
> 
> 
> xj.
> 
> ______________________________________________
> R-help at r-project.org 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.

-- 
Csardi Gabor <csardi at rmki.kfki.hu>    UNIL DGM