Function AddIpoptIntOption 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn AddIpoptIntOption(
    ipopt_problem: IpoptProblem,
    keyword: *const c_char,
    val: Index,
) -> Bool

Port of AddIpoptIntOption.

Safety

keyword must be a valid NUL-terminated string and ipopt_problem must be a valid IpoptProblem.