[SciPy-user] scipy.sqrt (-1)

[Pujo Aji]

Hello,

It seems that the scipy documentation should be changed a bit.
It is in page 3 http://www.scipy.org/Documentation scipy tutorial:
Finally, some of the basic functions like log, sqrt, and inverse trig
functions have been modifed to return
complex numbers instead of NaN's where appropriate (i.e. scipy.sqrt(-1)
returns 1j).

Thanks,
pujo


On 5/26/06, Bill Baxter <wbaxter at gmail.com> wrote:
>
> I think that's expected.  If you want to get a complex output, you have to
> give it a complex input like:
> >> scipy.sqrt(-1+0j)
> 1j
> or
> >> scipy.sqrt(complex(-1))
> 1j
>
>
> --bb
>
> On 5/26/06, Pujo Aji <ajikoe at gmail.com> wrote:
>
> > Hello,
> I use scipy 0.4.9:
> I ran scipy.sqrt(-1) hopefully it gives me 1j but I've got :
> -1.#IND
>
> Is that normal?
>
> Thanks,
> pujo
>
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