Bill Page wrote:
>
> On Wed, Oct 22, 2008 at 11:56 AM, Martin Rubey wrote:
> >
> > Bill Page writes:
> >
> >> If it is internal, why is it exported? Perhaps some other aspect of
> >> this design needs to be reconsidered. Maybe 'fixedPointExquo" is
> >> being defined in the wrong place?
> >
> > Well, I want to say that it's probably not useful to the end user, and
> > thus shouldn't pollute the namespace. But maybe I'm wrong.
> >
>
> It looks to me like just a better version of the 'exquo' that is
> exported by 'StreamTaylorSeriesOperations' and called by 'exquo' in
> TaylorSeries (which is already exposed in the interpreter). The
> commented-out code in 'exprode.spad.pamphlet':
>
> --opex := operator("exquo"::Symbol)$OP
> opex := operator("fixedPointExquo"::Symbol)$OP
>
> suggests that perhaps the author of this change just did not want to
> bother with fixing 'TaylorSeries'.
>
I am not sure if 'fixedPointExquo' is better -- it looks that 'exquo'
performs the same computation, but when given nontrivial zero series
'fixedPointExquo' will indefinitly try find nonzero coefficient,
while 'exquo' will give up after trying 1000 times.
I have build FriCAS commenting out 'fixedPointExquo' and uncommenting
the 'exquo' one -- all test pass and this change fixes issue 301. So
I think that for release we should just use 'exquo'.
--
Waldek Hebisch
[EMAIL PROTECTED]
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