[Scilab-users] Unexpected result using horner

[Samuel Gougeon]

Le 24/07/2022 à 13:34, Samuel Gougeon a écrit :
>
> Sorry, but nothing is clear to me about your statements:
>
> 1) what shows you that iir() is correct while the analpf + horner way 
> is not?
>
> 2) With the analpf + horner method, assuming that it is not correct, 
> what shows you that horner is not correct, while analpf is correct, 
> instead of the opposite or both incorrect?
>
> 3) do you have a reference about the equivalence?
>
> 4) have you tried after simp_mode(%f)?
>

By the way, you may edit iir(). You will see that it uses analpf() as 
well, plus bilt() and trans() instead of (directly) horner.
Then editing bilt and trans show a lot of code...