Hi Oleg,
I totally agree with the principle, and I understand the interest in the
idea very well, but it requires reflection. For example, do we need a kind
of neutral element for the different forms of composition? How do we draw
it? Etc.
We will think about the problem...
Yann
Le mer. 31 août 2022 à 22:26, Oleg Nesterov <o...@redhat.com> a écrit :
> On 08/26, Yann Orlarey wrote:
> >
> > I published the version with the 'any' patch.
>
> Great, thanks Yann!
>
> can I suggest another patch then?
>
> With this patch par(i, 0, whatever) has zero inputs and zero outputs,
> just like "0:!". To me this looks usefull, and I do remember someone
> else on faudiostream-users wanted this feauture, but I can not recall
> who and when.
>
> If nothing else, lets look at fi.filterbank,
>
> filterbank(O,lfreqs) = an.analyzer(O,lfreqs) : delayeq(nb)
> with {
> nb = ba.count(lfreqs);
> fc(n) = ba.take(n, lfreqs);
> ap(n) = highpass_plus_lowpass(O,fc(n));
> delayeq(1) = _,_; // par(i,0,...) does not fly
> delayeq(nb) = par(i,nb-1,apchain(nb-1-i)),_,_;
> apchain(0) = _;
> apchain(i) = ap(i) : apchain(i-1);
> };
>
> note the "does not fly" comment above. With this patch delayeq(1)
> doesn't need a special handling.
>
> Oleg.
> ---
>
> diff --git a/compiler/evaluate/eval.cpp b/compiler/evaluate/eval.cpp
> index 632616c2e..e19638377 100644
> --- a/compiler/evaluate/eval.cpp
> +++ b/compiler/evaluate/eval.cpp
> @@ -904,7 +904,7 @@ static string evalLabel(const char* src, Tree visited,
> Tree localValEnv)
> static Tree iteratePar(Tree id, int num, Tree body, Tree visited, Tree
> localValEnv)
> {
> if (num == 0) {
> - evalerror(yyfilename, -1, "iteratePar called with 0 iteration",
> id);
> + return boxRoute(boxInt(0), boxInt(0), boxPar(boxInt(0),
> boxInt(0)));
> }
>
> Tree res = eval(body, visited, pushValueDef(id, tree(num - 1),
> localValEnv));
>
>
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