#include <Standard.hxx>
#include <Handle_Expr_PolyFunction.hxx>
#include <Handle_Expr_GeneralFunction.hxx>
#include <Expr_PolyExpression.hxx>
#include <Handle_Expr_GeneralExpression.hxx>
#include <Standard_Boolean.hxx>
#include <Handle_Expr_NamedUnknown.hxx>
#include <Standard_Real.hxx>