accessing only left eigenvectors in armadillo c

Question

I am using eig-gen function from the armadillo library and getting the left and right eigenvectors/eigenvalues together, meaning the elements are appearing as (1,2), (3,4) . Is there a way to access only the left eigenvectors/eigenvalues at one time since I want to perform manipulation on them ? If not, how to access corresponding left and right elements from these dual elements ?

Answer 1

[answer withdrawn, as upstream documentation no longer describes the function mentioned in the answer]