eigenval / EIGENVALUES

[salvomic]

(06-03-2015 06:24 PM)parisse Wrote:  Very interesting, you have found an example of matrix that enter an infinite loop when applying Francis numeric algorithm with 2 real shifts (the loop is infinite because the matrix is already in Hessenberg form and the shifts are exact integers). Introducing a small rounding error breaks the infinite loop, I'm updating the giac source code to do that.

thank you!