> You write "fix", but you do not remeber you saying what the
> problem is (I can guess but I may guess wrong).  In particular,
> is there a testcase showing wrong behaviour?

Didn't I mention it in the first mail?

> Bug description:
>
> (1) -> countRealRoots(x^2-1)
>
>    (1)  2
>                                                         Type: PositiveInteger
> (2) -> countRealRoots(x^4-1)
>
>    (2)  1
>                                                         Type: PositiveInteger
>
> The real roots of x^2-1 and x^4-1 are 1 and -1,
> so countRealRoots is wrong.

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