Function getnetbyaddr_r 

pub unsafe extern "C" fn getnetbyaddr_r(
    net: u32,
    type_: c_int,
    result_buf: *mut netent,
    buf: *mut c_char,
    buflen: size_t,
    result: *mut *mut netent,
    h_errnop: *mut c_int,
) -> c_int