Perform one step of the Durbin-Levinson algorithm.
The vector c specifies the autocovariances
[gamma_0, …, gamma_t]
from lag 0 to t, oldphi
specifies the coefficients based on c(t-1) and oldv
specifies the corresponding error.
If oldphi and oldv are omitted, all steps from 1 to t of the algorithm are performed.
Package: octave