ALC_FLAG_PM
sc->alc_flags |= ALC_FLAG_PM;
if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
if ((sc->alc_flags & ALC_FLAG_PM) != 0) {