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Re: [Axiom-developer] series2.output
From: |
Gregory Vanuxem |
Subject: |
Re: [Axiom-developer] series2.output |
Date: |
Sat, 03 Feb 2007 18:31:53 +0100 |
Le samedi 03 février 2007 à 18:05 +0100, Waldek Hebisch a écrit :
> > There is a apparently a problem in the Build-improvements branch or may
> > be in GCL, I have no idea (I can reproduce the following on MathAction
> > (build-improvements)):
> >
> > =======================================================================
> > Gold:
> >
> > (2) -> f:=taylor(1-x^2)
> >
> > 2
> > (2) 1 - x
> > Type: UnivariateTaylorSeries(Expression Integer,x,0)
> > (3) -> sin asin f
> >
> > 2 11
> > (3) 1 - x + O(x )
> > ========================================================================
> > Build-improvements:
> > ========================================================================
> > (11) -> f:=taylor(1-x^2)
> >
> > 2
> > (11) 1 - x
> > Type: UnivariateTaylorSeries(Expression Integer,x,0)
> >
> > (12) -> sin asin f
> >
> > 1 4 1 6 7 8 5 10 11
> > (12) 1 - - x - -- x - --- x - ---- x + O(x )
> > 4 16 768 3072
> > Type: UnivariateTaylorSeries(Expression Integer,x,0)
> > ========================================================================
> >
>
> AFAICS this is bug 312 in action. This bug appeared as a byproduct
> of fix for bug 63. Igor Khavkine found the wrong place and proposed
> a fix, wh-sandbox contains slightly different fix.
Yes you're right, my version of Gold contains the Igor Kahvkine's patch.
Will look in your patches (on my BIG TODO list).
Thanks,
Greg