[Maxima] speeding up the simplifier
macrakis at alum.mit.edu
Fri Feb 16 10:36:47 CST 2007
On 2/16/07, Robert Dodier <robert.dodier at gmail.com> wrote:
> On 2/16/07, Richard Fateman <fateman at cs.berkeley.edu> wrote:
> > It used to be that the operators property came first on the property
> > of symbols like %sin.
> > This made it faster for the simplifier to get to programs like
> Maybe in some version of Lisp it made a difference. From
> what I can tell, it doesn't anymore.
You mean there are versions of Lisp which don't do a sequential search on
the property list? The difference may be small, however....
So I don't see a point to
> trying to organize the property list. Also, this optimization assumes
> that a substantial fraction of the time spent by the simplifier is
> (GET 'FOO 'OPERATORS). I doubt if that's the case.
That is I think a better argument. But these things add up. We old-timers
like to see tight code.
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