[wp34s] Poly root finders?

[emece67]

Hi all,

I'm having trouble with the polyroot program in the wp34s library. I've have tried various versions of it I have found around. But, in my tests (very basic ones), all of them suffer from different issues (machine resets, infinite results, bad roots...).

I've searched the forum about this and have found some discussion about it some years ago. The last version of the wp34s polynomial root solver seems to be this, but if fails, in my case with polinomial $$z^2+1=0$$ giving a double root at z = 0, which is obviously wrong.

I'm not sure if I'm doing something wrong so, does anybody know of a working poly solver for the wp34s? If anybody insists me on the existing solver, I will give it a new try, but perhaps I'll need advice on how to use it.

EDIT: last summer I worked on a Laguerre's method based solver for the wp34s. It is far from being completed (not even functional), so I do not expect it to be usable in the foreseeable future, thus turned to the wp34s library one.