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Re: Can we use +nan.0?
From: |
David Kastrup |
Subject: |
Re: Can we use +nan.0? |
Date: |
Wed, 06 Apr 2011 16:01:58 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
Han-Wen Nienhuys <address@hidden> writes:
> On Tue, Apr 5, 2011 at 2:41 AM, David Kastrup <address@hidden> wrote:
>>>> +nan.0 appears fine for that. But can we rely on it being available on
>>>> supported platforms? I don't find it in the sources of Lilypond, though
>>>
>>> It sounds a bit fishy especially since alterations are normally
>>> rational numbers. Why not use a non-number value to signify this?
>>> Maybe #f ?
>>
>> Because alterations are compared using `=' which bombs out on `#f'
>> (which was actually my first attempt).
>
> I'm without context, but maybe the code should look at the comparands
> before comparing?
Sure. Just means I have to analyze and touch more code.
--
David Kastrup