Function out123_sys::out123_getparam

pub unsafe extern fn out123_getparam(ao: *mut out123_handle,
                                     code: out123_parms,
                                     ret_value: *mut c_long,
                                     ret_fvalue: *mut c_double,
                                     ret_svalue: *mut *mut c_char)
                                     -> c_int