restructuring libc
[unix-history] / usr / src / lib / libcompat / 4.3 / remque.c
CommitLineData
b453ffd9
KM
1/*
2 * Copyright (c) 1987 Regents of the University of California.
3 * All rights reserved. The Berkeley software License Agreement
4 * specifies the terms and conditions for redistribution.
5 */
6
7#if defined(LIBC_SCCS) && !defined(lint)
8static char sccsid[] = "@(#)remque.c 5.1 (Berkeley) %G%";
9#endif LIBC_SCCS and not lint
10
11/*
12 * remque -- vax remque instruction
13 *
14 * NOTE: this implementation is non-atomic!!
15 */
16
17struct vaxque { /* queue format expected by VAX queue instructions */
18 struct vaxque *vq_next;
19 struct vaxque *vq_prev;
20};
21
22remque(e)
23 register struct vaxque *e;
24{
25 e->vq_prev->vq_next = e->vq_next;
26 e->vq_next->vq_prev = e->vq_prev;
27}