[Numpy-discussion] __numpy_ufunc__

[Sebastian Berg]

On Mi, 2014-07-16 at 09:07 +0100, Nathaniel Smith wrote:
> Weirdly, I never received Chuck's original email in this thread.
> Should some list admin be informed?
> 

I send some mails yesterday and they never arrived... Not sure if it is
a problem on my side or not.

> I also am not sure what/where Julian's comments were, so I second the
> call for context :-). Putting it off until 1.10 doesn't seem like an
> obviously bad idea to me, but specifics would help...
> 
> (__numpy_ufunc__ is the new system for allowing arbitrary third party
> objects to override how ufuncs are applied to them, i.e. it means
> np.sin(sparsemat) and np.sin(gpuarray) can be defined to do something
> sensible. Conceptually it replaces the old
> __array_prepare__/__array_wrap__ system, which was limited to ndarray
> subclasses and has major limits on what you can do. Of course
> __array_prepare/wrap__ will also continue to be supported for
> compatibility.)
> 
> -n
> 
> On 16 Jul 2014 00:10, "Benjamin Root" <ben.root at ou.edu> wrote:
>         Perhaps a bit of context might be useful? How is numpy_ufunc
>         different from the ufuncs that we know and love? What are the
>         known implications? What are the known shortcomings? Are there
>         ABI and/or API concerns between 1.9 and 1.10?
>         
>         
>         Ben Root
>         
>         
>         
>         On Mon, Jul 14, 2014 at 2:22 PM, Charles R Harris
>         <charlesr.harris at gmail.com> wrote:
>                 Hi All,
>                 
>                 Julian has raised the question of including
>                 numpy_ufunc in numpy 1.9. I don't feel strongly one
>                 way or the other, but it doesn't seem to be finished
>                 yet and 1.10 might be a better place to work out the
>                 remaining problems along with the astropy folks
>                 testing possible uses.
>                 
>                 
>                 Thoughts?
>                 
>                 
>                 Chuck 
>                 
>                 
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