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

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