IntCyc( z )
returns the cyclotomic integer (see Cyclotomic Integers) with
Zumbroich base coefficients (see ZumbroichBase) List( zumb, x -
Int( x ) )
where zumb is the vector of Zumbroich base coefficients
of the cyclotomic z; see also RoundCyc.
gap> IntCyc( E(5)+1/2*E(5)^2 ); IntCyc( 2/3*E(7)+3/2*E(4) ); E(5) E(4)
GAP 3.4.4