new copyright notice

[unix-history] / usr / src / lib / libcompat / 4.3 / insque.c

/*
* Copyright (c) 1987 Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*/

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)insque.c    5.3 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

/*
* insque -- vax insque instruction
*
* NOTE: this implementation is non-atomic!!
*/

struct vaxque {         /* queue format expected by VAX queue instructions */
       struct vaxque   *vq_next;
       struct vaxque   *vq_prev;
};

insque(e, prev)
       register struct vaxque *e, *prev;
{
       e->vq_prev = prev;
       e->vq_next = prev->vq_next;
       prev->vq_next->vq_prev = e;
       prev->vq_next = e;
}