[Scilab-Dev] syredi broken?

[Vincent COUVERT]

Hi,

You can report it as a bug. It is a MacOS only issue because b1 value is 
the same as in Scilab 4.1 under Linux and Windows.

Regards.

Le 10/10/12 13:01, Arvid Rosén a écrit :
> Hi!
> I am having problems with the macro eqiir in scilab 5.4 on MacOS. I 
> have traced it down to the call to syredi, which is a fortran 
> function. When run the example from the help file I get different 
> results from scilab 5.4 and scilab 4.
>
>
> // Scilab 5.4
> [fact,b2,b1,b0,c1,c0,zzeros,zpoles]=syredi(1,4,[2*%pi/10,4*%pi/10,0,0],0.02,0.001); 
>
> disp(b1)
> --> [2 2 1]
>
> // Scilab 4.1
> [fact,b2,b1,b0,c1,c0,zzeros,zpoles]=syredi(1,4,[2*%pi/10,4*%pi/10,0,0],0.02,0.001); 
>
> disp(b1)
> --> [ - 0.5354229    0.3489640    1.  ]
>
> The poles end up correct, but the zeros are rounded or casted to int 
> or something like that.
>
> Does anyone know anything about this? Should I report it as a bug?
>
> This turns out to break a lot of code for me, but in a very 
> non-obvious way.
>
> Best regards,
> Arvid
>
> --
> Arvid Rosén
>
> Softube AB
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>
>
>
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