[Rd] bug? (PR#8074)

[Thomas Lumley]

On Wed, 17 Aug 2005 pmosquin at hotmail.com wrote:
> I just don't understand this:
>
>> (2*2)==4
> [1] TRUE
>> .2*.2
> [1] 0.04
>> (.2*.2)==.04
> [1] FALSE

It's a FAQ, not a bug. Consider:

> (.2*.2) - .04
[1] 6.938894e-18

and read the FAQ

 	-thomas


> or
>
>> x=.04
>> x
> [1] 0.04
>> y=.2*.2
>> y
> [1] 0.04
>> y==x
> [1] FALSE
>
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Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle