pub unsafe extern "C" fn ca_add_masked_array_event(
type_: chtype,
count: c_ulong,
chanId: chid,
pFunc: caEventCallBackFunc,
pArg: *mut c_void,
p_delta: ca_real,
n_delta: ca_real,
timeout: ca_real,
pEventID: *mut evid,
mask: c_long,
) -> c_int