eval_func(zeta1_eval).
evalf_func(zeta1_evalf).
derivative_func(zeta1_deriv).
- latex_name("\\zeta").
+ latex_name("\\zeta").
overloaded(2));
//////////
function::register_new(function_options("zeta").
eval_func(zeta2_eval).
derivative_func(zeta2_deriv).
+ latex_name("\\zeta").
overloaded(2));
} // namespace GiNaC