Docstrings

ipopt_status_string(status::Integer)

Maps the Ipopt solve status integer to its textual description, as documented in the Ipopt output documentation.

setup_intermediate_callback!(workspace)

Registers Ipopt's intermediate callback so the Nonconvex callback is invoked once per Ipopt iteration with a Solution carrying the current iterate, the constraint values, the constraint multipliers, the objective value, and the primal/dual infeasibility in the convergence state.