[Numpy-discussion] inplace unary operations?

josef.pktd at gmail.com josef.pktd at gmail.com
Sun Aug 31 09:31:33 EDT 2014


On Sat, Aug 30, 2014 at 1:45 PM, Nathaniel Smith <njs at pobox.com> wrote:

> On Sat, Aug 30, 2014 at 6:43 PM,  <josef.pktd at gmail.com> wrote:
> > Is there a way to negate a boolean, or to change the sign of a float
> inplace
> > ?
>
> np.logical_not(arr, out=arr)
> np.negative(arr, out=arr)
>

Thanks Nathaniel.

np.negative might save a bit of memory and time when we have to negate the
loglikelihood all the time.

Josef



>
> -n
>
> --
> Nathaniel J. Smith
> Postdoctoral researcher - Informatics - University of Edinburgh
> http://vorpus.org
> _______________________________________________
> NumPy-Discussion mailing list
> NumPy-Discussion at scipy.org
> http://mail.scipy.org/mailman/listinfo/numpy-discussion
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/numpy-discussion/attachments/20140831/51679765/attachment.html>


More information about the NumPy-Discussion mailing list