[FFmpeg-devel] [PATCH] Document av_gcd()

[Reimar Döffinger]

On Sat, Feb 28, 2009 at 06:23:37PM +0100, Michael Niedermayer wrote:
> On Sat, Feb 28, 2009 at 04:53:08PM +0100, Stefano Sabatini wrote:
> > Hi,
> > as in subject, regards.
> > -- 
> > FFmpeg = Funny and Forgiving Multimedia Pitiful Elected Ghost
> 
> > Index: libavutil/mathematics.h
> > ===================================================================
> > --- libavutil/mathematics.h	(revision 17629)
> > +++ libavutil/mathematics.h	(working copy)
> > @@ -50,6 +50,9 @@
> >      AV_ROUND_NEAR_INF = 5, ///< Round to nearest and halfway cases away from zero.
> >  };
> >  
> > +/**
> > + * Returns the greatest common divisor of a and b.
> > + */
> >  int64_t av_const av_gcd(int64_t a, int64_t b);
> >  
> >  /**
> 
> ok,also please add
> "if either or both are <=0 then the behavior is undefined"

My r_frame_rate code in utils.c uses the = 0 case already, since I
considered that the common mathematical definition...