[R] Modular Arithmetic Error?

Dimitris Rizopoulos d.rizopoulos at erasmusmc.nl
Fri Apr 17 16:36:22 CEST 2009


check the R FAQ, and in particular entry 7.31:

http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f


Best,
Dimitris


iuhz7j202 at sneakemail.com wrote:
> A few further oddities (no longer having to do with modular arithmetic):
> 
>> (0.3 * 3) == 0.9
> [1] FALSE
>> (0.2 * 6) == 1.2
> [1] FALSE
> 
> This is bad behavior, right? I feel like I'm going crazy.
> 
> I'm using R version 2.8.1 (2008-12-22).
> 
> Thanks,
> Peter
> 
> ______________________________________________
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> 

-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
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