[unix-history] / usr / src / sys / deprecated / netdecnet / nsp_seq.h

/*	nsp_seq.h	1.3	82/10/09	*/

/*
 * NSP sequence numbers are 12 bit integers operated
 * on with modular arithmetic.  These macros can be
 * used to compare and perform arithmetic on such integers.
 */
#define	MAXSEQ	(1<<12)
#define	SEQMASK	(MAXSEQ-1)

#define	SEQ_LSS(a, b)	(nsp_seqcmp(a, b) < 0)
#define	SEQ_LEQ(a, b)	(nsp_seqcmp(a, b) <= 0)
#define	SEQ_GTR(a, b)	(nsp_seqcmp(a, b) > 0)
#define	SEQ_GEQ(a, b)	(nsp_seqcmp(a, b) >= 0)

#define	SEQ_ADD(a, b)	(((a) + (b)) & SEQMASK)
#define	SEQ_SUB(a, b)	(((a) - (b)) & SEQMASK)
Commit	Line	Data
5e3649c6	1	/* nsp_seq.h 1.3 82/10/09 */
e8e08468 SL	2
	3	/*
	4	* NSP sequence numbers are 12 bit integers operated
	5	* on with modular arithmetic. These macros can be
	6	* used to compare and perform arithmetic on such integers.
	7	*/
	8	#define MAXSEQ (1<<12)
	9	#define SEQMASK (MAXSEQ-1)
	10
	11	#define SEQ_LSS(a, b) (nsp_seqcmp(a, b) < 0)
	12	#define SEQ_LEQ(a, b) (nsp_seqcmp(a, b) <= 0)
	13	#define SEQ_GTR(a, b) (nsp_seqcmp(a, b) > 0)
	14	#define SEQ_GEQ(a, b) (nsp_seqcmp(a, b) >= 0)
	15
	16	#define SEQ_ADD(a, b) (((a) + (b)) & SEQMASK)
	17	#define SEQ_SUB(a, b) (((a) - (b)) & SEQMASK)