[FFmpeg-devel] [PATCH] doc/eval: fix/extend documentation for taylor() function

Stefano Sabatini stefasab at gmail.com
Sat Jan 26 11:31:34 CET 2013


On date Thursday 2013-01-24 03:38:56 +0100, Michael Niedermayer encoded:
> On Wed, Jan 23, 2013 at 07:24:11PM +0100, Stefano Sabatini wrote:
> > On date Tuesday 2013-01-22 23:54:09 +0100, Stefano Sabatini encoded:
> > > ---
> > >  doc/eval.texi |   19 ++++++++++++-------
> > >  1 file changed, 12 insertions(+), 7 deletions(-)
> > [...]
> > 
> > Updated.
> > -- 
> > FFmpeg = Fabulous and Faithless Mind-dumbing Powerful Embarassing Gadget
> 
> >  eval.texi |   20 +++++++++++++-------
> >  1 file changed, 13 insertions(+), 7 deletions(-)
> > bc0b6e9e6356978d26890a1a25fb0ece97ea58a4  0001-doc-eval-fix-extend-documentation-for-taylor-functio.patch
> > From 55fe0913caa2ff5fd1d55093a3bb17b4443bc9d0 Mon Sep 17 00:00:00 2001
> > From: Stefano Sabatini <stefasab at gmail.com>
> > Date: Tue, 22 Jan 2013 23:53:39 +0100
> > Subject: [PATCH] doc/eval: fix/extend documentation for taylor() function
> > 
> > ---
> >  doc/eval.texi |   20 +++++++++++++-------
> >  1 file changed, 13 insertions(+), 7 deletions(-)
> > 
> > diff --git a/doc/eval.texi b/doc/eval.texi
> > index 1ea89d6..3fd6ca9 100644
> > --- a/doc/eval.texi
> > +++ b/doc/eval.texi
> > @@ -155,13 +155,19 @@ the evaluation of @var{y}, return 0 otherwise.
> >  Evaluate @var{x}, and if the result is zero return the result of the
> >  evaluation of @var{y}, return 0 otherwise.
> >  
> > - at item taylor(expr, x) taylor(expr, x, id)
> > -Evaluate a taylor series at x.
> > -expr represents the LD(id)-th derivates of f(x) at 0. If id is not specified
> > -then 0 is assumed.
> > -note, when you have the derivatives at y instead of 0
> > -taylor(expr, x-y) can be used
> > -When the series does not converge the results are undefined.
> > + at item taylor(expr, x)
> > + at item taylor(expr, x, id)
> > +Evaluate a Taylor series at @var{x}, given an expression representing
> > +the i-th derivative of the approximated function.
> > +
> > + at var{expr} computes the ld(@var{id})-th derivative at 0 of the
> > +approximated function. The value stored in ld(@var{id}) is set to 0
> 
> > +and increased by 1 at each iteration step until the computation
> > +converges. If @var{id} is not specified then 0 is assumed.
> 
> this documents the implementation which could change,
> for example they could be evaluated in a different order
> someone might based on these docs write something that depends on
> the evaluation order ...

Changed.
-- 
FFmpeg = Formidable and Furious Martial Programmable Earthshaking Gladiator
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