[Rd] is.integer() (PR#6984)

[Prof Brian Ripley]

On Wed, 16 Jun 2004 mmr at tci.ufal.br wrote:

> I'm not sure if is it a BUG or not...

You were wrong to send a bug report if you are not sure: see the R FAQ.

> I'm using R 1.9.0, and I used the command below:
> 
> > is.integer(9)
> [1] FALSE
> 
> R manual contains this words about the is.integer() function:
> 
> "is.integer returns TRUE or FALSE depending on whether its argument is of 
> integer type or not."
> 
> What's the problem? Am I wrong about the BUG report?

9 is a double constant, not an integer constant.  The type of `9' is not
integer: try it

> typeof(9)
[1] "double"

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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