[FFmpeg-devel] [PATCH] lavu/rational: add syntactic sugar.

[Michael Niedermayer]

On Tue, Dec 31, 2013 at 05:39:07PM +0100, Nicolas George wrote:
> Le primidi 11 nivôse, an CCXXII, Clément Bœsch a écrit :
> > I would switch those two. "undef" sounds like "all fields are 0 so it's
> > just not set/defined". 1/0 sounds like an explicit division by zero, so
> > invalid on purpose.
> 
> I have no objection, depending on what people prefer.
> 
> My reasoning is this: 0/0 is when the structure is left uninitialized while
> 0/1 is used in several places to explicitly mark a value that was not
> defined.

1/0 is infinite
0/0 is undefined

these should be propagated sanely in calculations when using av_*_q()



[...]

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