1 /* Copyright (C) 1992, 1995, 1996 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 see <http://www.gnu.org/licenses/>. */
24 /* Insert ELEM into a doubly-linked list, after PREV. */
27 insque (void *elem, void *prev)
29 struct qelem *next = ((struct qelem *) prev)->q_forw;
30 ((struct qelem *) prev)->q_forw = (struct qelem *) elem;
32 next->q_back = (struct qelem *) elem;
33 ((struct qelem *) elem)->q_forw = next;
34 ((struct qelem *) elem)->q_back = (struct qelem *) prev;
40 /* Unlink ELEM from the doubly-linked list that it is in. */
45 struct qelem *next = ((struct qelem *) elem)->q_forw;
46 struct qelem *prev = ((struct qelem *) elem)->q_back;
50 prev->q_forw = (struct qelem *) next;