Function GetIpoptSolveTime 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn GetIpoptSolveTime(
    ipopt_problem: IpoptProblem,
) -> Number

Wall-clock solve time in seconds for the most recent solve, or 0.0 if the problem has not been solved yet.

Safety

ipopt_problem must be a valid IpoptProblem or NULL.