--- Gnu-Mach/i386/i386at/rtc.h	2020/09/02 04:36:58	1.1.1.1
+++ Gnu-Mach/i386/i386at/rtc.h	2020/09/02 04:46:52	1.1.1.2
@@ -134,4 +134,5 @@ struct rtc_st {
 	} \
 }	
 
-
+extern int readtodc(u_int *tp);
+extern int writetodc(void);