set_link("link", ValueNode_Const::create(Real(value)));
set_link("epsilon", ValueNode_Const::create(Real(epsilon)));
set_link("infinite", ValueNode_Const::create(Real(infinity)));
set_link("link", ValueNode_Const::create(Real(value)));
set_link("epsilon", ValueNode_Const::create(Real(epsilon)));
set_link("infinite", ValueNode_Const::create(Real(infinity)));
Real link = (*link_) (t).get(Real());
Real epsilon = (*epsilon_) (t).get(Real());
Real infinite = (*infinite_)(t).get(Real());
Real link = (*link_) (t).get(Real());
Real epsilon = (*epsilon_) (t).get(Real());
Real infinite = (*infinite_)(t).get(Real());