1 files changed, 80 insertions, 0 deletions
diff --git a/usr.sbin/xntpd/include/ntp_calendar.h b/usr.sbin/xntpd/include/ntp_calendar.h
new file mode 100644
index 0000000..fc12f0b
--- /dev/null
+++ b/usr.sbin/xntpd/include/ntp_calendar.h
@@ -0,0 +1,80 @@
+/* ntp_calendar.h,v 3.1 1993/07/06 01:06:48 jbj Exp
+ * ntp_calendar.h - definitions for the calendar time-of-day routine
+ */
+
+#include "ntp_types.h"
+
+struct calendar {
+	u_short year;	/* year (A.D.) */
+	u_short yearday;	/* day of year, 1 = January 1 */
+	u_char month;	/* month, 1 = January */
+	u_char monthday;	/* day of month */
+	u_char hour;	/* hour of day, midnight = 0 */
+	u_char minute;	/* minute of hour */
+	u_char second;	/* second of minute */
+};
+
+/*
+ * Days in each month.  30 days hath September...
+ */
+#define	JAN	31
+#define	FEB	28
+#define	FEBLEAP	29
+#define	MAR	31
+#define	APR	30
+#define	MAY	31
+#define	JUN	30
+#define	JUL	31
+#define	AUG	31
+#define	SEP	30
+#define	OCT	31
+#define	NOV	30
+#define	DEC	31
+
+/*
+ * We deal in a 4 year cycle starting at March 1, 1900.  We assume
+ * we will only want to deal with dates since then, and not to exceed
+ * the rollover day in 2036.
+ */
+#define	SECSPERMIN	(60)			/* seconds per minute */
+#define	MINSPERHR	(60)			/* minutes per hour */
+#define	HRSPERDAY	(24)			/* hours per day */
+#define	DAYSPERYEAR	(365)			/* days per year */
+
+#define	SECSPERDAY	(SECSPERMIN*MINSPERHR*HRSPERDAY)
+#define SECSPERYEAR	(365 * SECSPERDAY)	/* regular year */
+#define	SECSPERLEAPYEAR	(366 * SECSPERDAY)	/* leap year */
+
+#define	MAR1900		((JAN+FEB) * SECSPERDAY) /* no leap year in 1900 */
+#define	DAYSPERCYCLE	(365+365+365+366)	/* 3 normal years plus leap */
+#define	SECSPERCYCLE	(DAYSPERCYCLE*SECSPERDAY)
+#define	YEARSPERCYCLE	4
+
+/*
+ * Gross hacks.  I have illicit knowlege that there won't be overflows
+ * here, the compiler often can't tell this.
+ */
+#define TIMES60(val)	((((val)<<4) - (val))<<2)       /* *(16 - 1) * 4 */
+#define	TIMES24(val)	(((val)<<4) + ((val)<<3))	/* *16 + *8 */
+#define	TIMES7(val)	(((val)<<3) - (val))            /* *8  - *1 */
+#define	TIMESDPERC(val)	(((val)<<10) + ((val)<<8) \
+			+ ((val)<<7) + ((val)<<5) \
+			+ ((val)<<4) + ((val)<<2) + (val))	/* *big* hack */
+
+/*
+ * Another big hack.  Cycle 22 started on March 1, 1988.  This is
+ * STARTCYCLE22 seconds after the start of cycle 0.
+ */
+#define	CYCLE22		(22)
+#define	STARTCYCLE22	(U_LONG)(0xa586b500)	/* 2777068800 */
+#define	MAR1988		(U_LONG)(STARTCYCLE22 + (U_LONG)MAR1900)
+
+/*
+ * The length of January + February in leap and non-leap years.
+ */
+#define	JANFEBNOLEAP	((JAN+FEB) * SECSPERDAY)
+#define	JANFEBLEAP	((JAN+FEBLEAP) * SECSPERDAY)
+
+extern	void	caljulian	P((U_LONG, struct calendar *));
+extern	U_LONG	caltontp	P((const struct calendar *));
+