-/*
- * External definitions for
- * functions in inet(3N)
- */
-unsigned long inet_addr();
-char *inet_ntoa();
-struct in_addr inet_makeaddr();
-unsigned long inet_network();
+/* External definitions for functions in inet(3) */
+
+#ifdef __STDC__
+extern unsigned long inet_addr(const char *);
+extern char *inet_ntoa(struct in_addr);
+extern struct in_addr inet_makeaddr(int , int);
+extern unsigned long inet_network(const char *);
+extern unsigned long inet_lnaof(struct in_addr);
+extern unsigned long inet_netof(struct in_addr);
+#else
+extern unsigned long inet_addr();
+extern char *inet_ntoa();
+extern struct in_addr inet_makeaddr();
+extern unsigned long inet_network();
+extern unsigned long inet_lnaof();
+extern unsigned long inet_netof();
+#endif