with Standard_Complex_Polynomials; use Standard_Complex_Polynomials; with Abstract_Ring; package Standard_Complex_Poly_Ring is new Abstract_Ring(Poly,Null_Poly,One_Poly, Create,Equal,Copy,"+","+","-","-","*", Add,Sub,Min,Mul,Clear); -- DESCRIPTION : -- Defines the ring of polynomials in several variables with as -- coefficients the standard complex numbers.