Hi Stéphan,
thanks for your reply, but I don't really understand you...
On 10/07, Stéphane Letz wrote:
>
> Concerning « Foreign functions �
I am starting to regret I mentioned ffunction ;) I did this only to make my
email more clear.
> they are supposed to be side effects free,
Yet infereFFType() returns makeSimpleType(kSamp) if ffarity(ff) == 0.
If this case is supposed to be side effects free too, then why infereFFType()
has to check ffarity() at all?
It even has a comment:
// case of functions like rand()
> see the "faust-quick-reference » :
OK, I have to admit that I never read the docs, will do.
> Foreign functions with input parameters are considered pure math functions.
> They are therefore considered free of side effects and called only when their
> parameters change (that is at the rate of the fastest parameter).
Exactly. Foreign functions with input parameters. But my test-case uses
foreign function without input parameters, its ffarity() == 0.
But again, this doesn't really matter. My only point is that faust should not
evaluate the "nontrivial" delay expression more than once, with or without
ffunction().
Oleg.
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