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Re: abs

To: "Marie Rognes" <meg@xxxxxxxxxxx>
From: "Martin Sandve Alnæs" <martinal@xxxxxxxxx>
Date: Fri, 2 Jan 2009 16:22:49 +0100
Cc: ufl-dev@xxxxxxxxxx
Delivered-to: ufl-dev@xxxxxxxxxx
In-reply-to: <495E2BFD.2000205@math.uio.no>
Sender: martin.alnes@xxxxxxxxx

On Fri, Jan 2, 2009 at 4:00 PM, Marie Rognes <meg@xxxxxxxxxxx> wrote:
> Garth N. Wells wrote:
>> Martin Sandve Alnæs wrote:
>>
>>> UFL supports absolute values of any scalar expression.
>>>
>>>
>>
>> Very good. It's not currently supported by FFC.
>>
>
> It is, it is just called 'modulus'.  Overriding the python builtin
> caused some issues a while back...

The right way to override abs(foo) in Python is to implement
__abs__(self) in FooType. Don't know if that helps.

Martin

References

abs
From: Garth N. Wells, 2008-12-31
Re: abs
From: Martin Sandve Alnæs, 2009-01-01
Re: abs
From: Garth N. Wells, 2009-01-01
Re: abs
From: Marie Rognes, 2009-01-02