Let be a polynomial and be maxroot the maximal modulus of
the root of
. From
we may derive a polynomial
such that the
roots of
have a modulus lower or equal to 1 and if
is a root
of
then maxroot
is a root of
.
The calculation of the coefficients of
may be done with the
procedure
int Unit_Polynom(int Degree,INTERVAL_VECTOR &Coeff, double maxroot,INTERVAL_VECTOR &CoeffU)where Coeff are the coefficients of