usr/src/lib/libc/gen/remque.c

/*
 * Copyright (c) 1987 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)remque.c    5.1 (Berkeley) 1/27/87";
#endif LIBC_SCCS and not lint

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

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

remque(e)
        register struct vaxque *e;
{
        e->vq_prev->vq_next = e->vq_next;
        e->vq_next->vq_prev = e->vq_prev;
}