Re: [Rd] Im() of negative non-complex numbers is pi (PR#8272)

From: <davison_at_uchicago.edu>
Date: Tue 01 Nov 2005 - 21:47:39 GMT

Sorry, I meant to write 2.1.1 instead of 2.2.1 below.

On Tue, 1 Nov 2005 davison@uchicago.edu wrote:

> Hi,
>
> I think the following indicates a bug in Im().
>
>> Im(-1)
> [1] 3.141592653589793115998
>> pi
> [1] 3.141592653589793115998
>> Im(0i-1)
> [1] 0
>> Im(-0.9876)
> [1] 3.141592653589793115998
>> Im(-987654321)
> [1] 3.141592653589793115998
>> Im(1)
> [1] 0
>> is.complex(-1)
> [1] FALSE
>
> This is R 2.2.0; Im(-1) == 0 with R 2.2.1.
>
> Thanks,
>
> Dan
>
>> version
> _
> platform i386-pc-linux-gnu
> arch i386
> os linux-gnu
> system i386, linux-gnu
> status
> major 2
> minor 2.0
> year 2005
> month 10
> day 06
> svn rev 35749
> language R
>
> Debian (stable) linux
>
> ______________________________________________
> R-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>



R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel Received on Wed Nov 02 08:52:41 2005

This archive was generated by hypermail 2.1.8 : Tue 01 Nov 2005 - 23:21:25 GMT