/contrib/ntp/kernel/sys/chudefs.h

 1/*
 2 * Definitions for the CHU line discipline v2.0
 3 */
 4
 5/*
 6 * The CHU time code consists of 10 BCD digits and is repeated
 7 * twice for a total of 10 characters.  A time is taken after
 8 * the arrival of each character.  The following structure is
 9 * used to return this stuff.
10 */
11#define	NCHUCHARS	(10)
12
13struct chucode {
14	u_char codechars[NCHUCHARS];	/* code characters */
15	u_char ncodechars;		/* number of code characters */
16	u_char chutype;			/* packet type */
17	struct timeval codetimes[NCHUCHARS];	/* arrival times */
18};
19
20#define CHU_TIME 0		/* second half is equal to first half */
21#define CHU_YEAR 1		/* second half is one's complement */
22