[Maxima] How to prevent evaluation.
fateman at cs.berkeley.edu
Sun Dec 27 17:42:45 CST 2009
Richard Hennessy wrote:
> It seems like in the %if function both the then part and the else
> part are always expanded even when only one needs to be evaluated.
Maybe you could review what it is that %if does, and see if it is
consistent with the semantics of %if to evaluate only one part?
I expect that it is not. But I've forgotten how %if is supposed to work
and it isn't in the documentation I have.
> Is there a way to stop evaluation of both parts
Certainly, but then it would be a different facility. Which do you
want? Also, Maxima generally is incapable of
avoiding a calculation because it might take too long. It can, of
course, stop a calculation after it has taken a while.
But not usually anticipating...
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