-#define MOFFSS(e) ((int)&(((struct fddi_mib *)0)->e))
-#define MOFFSA(e) ((int) (((struct fddi_mib *)0)->e))
-
-#define MOFFMS(e) ((int)&(((struct fddi_mib_m *)0)->e))
-#define MOFFMA(e) ((int) (((struct fddi_mib_m *)0)->e))
-
-#define MOFFAS(e) ((int)&(((struct fddi_mib_a *)0)->e))
-#define MOFFAA(e) ((int) (((struct fddi_mib_a *)0)->e))
-
-#define MOFFPS(e) ((int)&(((struct fddi_mib_p *)0)->e))
-#define MOFFPA(e) ((int) (((struct fddi_mib_p *)0)->e))
+#define MOFFSS(e) offsetof(struct fddi_mib, e)
+#define MOFFMS(e) offsetof(struct fddi_mib_m, e)
+#define MOFFAS(e) offsetof(struct fddi_mib_a, e)
+#define MOFFPS(e) offsetof(struct fddi_mib_p, e)