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

[davison@uchicago.edu]

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


On Tue, 1 Nov 2005 davison at 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
>
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