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quakeforge/libs/util/link.c

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/*
link.c
(description)
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
2001-09-28 06:26:31 +00:00
static const char rcsid[] =
"$Id$";
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "QF/link.h"
// ClearLink is used for new headnodes
void
ClearLink (link_t *l)
{
l->prev = l->next = l;
}
void
RemoveLink (link_t *l)
{
l->next->prev = l->prev;
l->prev->next = l->next;
}
void
InsertLinkBefore (link_t *l, link_t *before)
{
l->next = before;
l->prev = before->prev;
l->prev->next = l;
l->next->prev = l;
}
void
InsertLinkAfter (link_t *l, link_t *after)
{
l->next = after->next;
l->prev = after;
l->prev->next = l;
l->next->prev = l;
}