g N-by-N part of this
          array must contain a given matrix Y, for instance the
          right transformation matrix VSR returned by the LAPACK
          Library routine ZGGES.
          On exit, if JOBY = 'U', the leading N-by-N part of this
          array contains the product of the given matrix Y and the
          right transformation matrix that reduced (A,B) to block-
          diagonal form. The local transformation matrix is itself a
          product of non-unitary equivalence transformation