[Rd] A limitation for polyroot ? (PR#880)

[Paul Gilbert]

>Dear R Development Team,

I think most of the core team is at a conference,  but I seem to recall that this
problem was fixed in 1.2.2. You should probably upgrade. Below is what I get.

Paul Gilbert
_____

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> polyroot(c(6,-5,1))
[1] 2+1.615587e-27i 3-1.615587e-27i
> polyroot(c(0,0,0,1))
[1] 0+0i 0+0i 0+0i
> polyroot(c(4,-4,1))
[1] 2+1.110223e-16i 2-1.110223e-16i
> polyroot(c(0,0,0,1))
[1] 0+0i 0+0i 0+0i
>


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