[R] 0 * NA

[Liaw, Andy]

I believe that's intentional.  NA means we don't know what the value is, so
just about any operation with NA will result in NA.  You might think
anything times 0 is 0, but:

> 0*Inf
[1] NaN

and there's no guarantee that the "true" value not observed is not Inf...

Andy

> From: BORGULYA Gábor
> 
> Hi list!
> 
> Debuging one of my R programs I found:
> 
>  > 0 * NA
>  [1] NA
> 
> It this a bug, or intentional? I would expect 0 or 0.0 
> depending on the type 
> of the NA.
> 
> Gabor
> 
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