int weap_eff = (is_random_artefact(weap)) ?
                       randart_wpn_property(weap, RAP_BRAND) :
                       weap.special;

    int weap_brand = get_weapon_brand(weap);

            || weap_eff == SPWPN_VAMPIRICISM
            || weap_eff == SPWPN_PAIN
            || weap_eff == SPWPN_DRAINING);

            || weap_brand == SPWPN_VAMPIRICISM
            || weap_brand == SPWPN_PAIN
            || weap_brand == SPWPN_DRAINING);