41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/* Copyright (C) 1992, 1995, 1996 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <stddef.h>
|
|
#include <search.h>
|
|
|
|
/* Insert ELEM into a doubly-linked list, after PREV. */
|
|
|
|
void
|
|
insque (void *elem, void *prev)
|
|
{
|
|
struct qelem *next = ((struct qelem *) prev)->q_forw;
|
|
((struct qelem *) prev)->q_forw = (struct qelem *) elem;
|
|
if (next != NULL)
|
|
next->q_back = (struct qelem *) elem;
|
|
((struct qelem *) elem)->q_forw = next;
|
|
((struct qelem *) elem)->q_back = (struct qelem *) prev;
|
|
}
|
|
|
|
/* Unlink ELEM from the doubly-linked list that it is in. */
|
|
|
|
void
|
|
remque (void *elem)
|
|
{
|
|
struct qelem *next = ((struct qelem *) elem)->q_forw;
|
|
struct qelem *prev = ((struct qelem *) elem)->q_back;
|
|
if (next != NULL)
|
|
next->q_back = prev;
|
|
if (prev != NULL)
|
|
prev->q_forw = (struct qelem *) next;
|
|
}
|