On Fri, Apr 10, 2009 at 7:43 AM, John Cremona <john.crem...@gmail.com> wrote:
>
> 2009/4/10 William Stein <wst...@gmail.com>:
>>
>> On Fri, Apr 10, 2009 at 3:09 AM, John Cremona <john.crem...@gmail.com> wrote:
>>>
>>> For me the trouble with extended_*.py is that I have no idea what they
>>> aactually are, so it is hard to get started....
>>
>> But aren't you just dying to find out what they are? :-)
>
> Well... I did not even know that these classes exited until I made
> the patch at #5685 (still awaiting review) and had to adjust a couple
> of functions in one of those files. I can guess: it somehow adds
> +infinity and -infinity to ZZ in a way that makes as much sense as
> possible.
>
> But search_src("ExtendedInteger") only picks up these two files, which
> suggests to me (maybe wrongly) that they are not actually used
> anywhere!
>
They are used. ExtendedInteger is used by the extended_rational_field
file, and that is used in at least two places:
rings/rational_field.py: sage: E = ExtendedRationalField
rings/padics/valuation.py:QQe =
sage.rings.extended_rational_field.ExtendedRationalField
William
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to sage-devel@googlegroups.com
To unsubscribe from this group, send email to
sage-devel-unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/sage-devel
URLs: http://www.sagemath.org
-~----------~----~----~----~------~----~------~--~---
