Question what is wrong here:

act.informative.c int single(struct obj_data *o) { if (IS_SET(GET_OBJ_WEAR(o), ITEM_WEAR_HANDS) || IS_SET(GET_OBJ_WEAR(o), ITEM_WEAR_FEET) || IS_SET(GET_OBJ_WEAR(o), ITEM_WEAR_LEGS) || IS_SET(GET_OBJ_WEAR(o), ITEM_WEAR_ARMS)) return(FALSE); return(TRUE); } act.informative.c:171: error: invalid operands to binary & act.informative.c:172: error: invalid operands to binary & act.informative.c:173: error: invalid operands to binary & act.informative.c:174: error: invalid operands to binary & make[1]: *** [act.informative.o] Error 1

int single(struct obj_data *o) { if (OBJWEAR_FLAGGED(o, ITEM_WEAR_HANDS) || OBJWEAR_FLAGGED(o, ITEM_WEAR_FEET) || OBJWEAR_FLAGGED(o, ITEM_WEAR_LEGS) || OBJWEAR_FLAGGED(o, ITEM_WEAR_ARMS)) return(FALSE); return(TRUE); }