  The decompositions of the Fock and Basic modules of the affine Lie algebra
\hat{sl(N)} into irreducible submodules of the Yangian algebra Y(gl(N)) are
constructed. Each of the irreducible submodules admits the unique up to
normalization eigenbasis of the maximal commutative subalgebra of the Yangian.
The elements of this eigenbasis are identified with specializations of
Macdonald symmetric functions where both parameters of these functions approach
an N-th primitive root of unity.
