#ifdef __OPTIMIZE__
#define setreuid(ruid, euid) __setreuid((ruid), (euid))
#endif /* Optimizing. */
+
+/* Set the effective user ID of the calling process to UID. */
+extern int EXFUN(seteuid, (__uid_t __uid));
#endif /* Use BSD. */
/* Set the group ID of the calling process to GID.
#ifdef __OPTIMIZE__
#define setregid(rgid, egid) __setregid((rgid), (egid))
#endif /* Optimizing. */
+
+/* Set the effective user ID of the calling process to UID. */
+extern int EXFUN(seteuid, (__uid_t __uid));
#endif /* Use BSD. */