Hi Mykle,
We're working on a better solution, but here's a way to go around this type
of problem (directly take from the new mi.lib library):
initState((init)) = R(0,init)
with{
R(n,(initn,init)) = +(initn : ba.impulsify@n) : R(n+1,init);
R(n,initn) = +(initn : ba.impulsify@n);
};
osc(m,k,z,x0,x1) = equation
with{
A = 2 - (k + z)/m;
B = z/m - 1;
C = 1/m;
equation = x
letrec{
'x = A*(x : initState(x0)) + B*(x' : initState(x1)) + *(C);
};
};
I hope this helps.
Cheers,
Romain
On Fri, Feb 1, 2019 at 9:44 AM Mykle James Hansen <my...@mykle.com> wrote:
> Hi,
>
> Is there a way in Faust to specify the initial value of
> a variable whose subsequent values are defined with letrec{} ?
>
> In my code I have a signal that divides other signals with the % operator.
> This divisor is defined never to be zero, but because
> the letrec expression defines the value based on
> the previous values of other variables, I don’t see
> how the initial value is defined at all. In practice
> the initial value appears to be zero, because I get a
> divide-by-zero crash if I don’t add a bunch of other
> defensive code.
>
> Thanks,
> -mykle-
>
> _______________________________________________
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> Faudiostream-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/faudiostream-users
>
--
Romain Michon
+33 (0)7 67 39 72 40http://grame.fr/~michon
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