1*8ce3644cSJung-uk Kim# $OpenBSD: ack.m4,v 1.3 2003/06/03 02:56:11 millert Exp $ 23a68a926SJuli Mallett# $NetBSD: ack.m4,v 1.4 1995/09/28 05:37:54 tls Exp $ 33a68a926SJuli Mallett# 43a68a926SJuli Mallett# Copyright (c) 1989, 1993 53a68a926SJuli Mallett# The Regents of the University of California. All rights reserved. 63a68a926SJuli Mallett# 73a68a926SJuli Mallett# This code is derived from software contributed to Berkeley by 83a68a926SJuli Mallett# Ozan Yigit. 93a68a926SJuli Mallett# 103a68a926SJuli Mallett# Redistribution and use in source and binary forms, with or without 113a68a926SJuli Mallett# modification, are permitted provided that the following conditions 123a68a926SJuli Mallett# are met: 133a68a926SJuli Mallett# 1. Redistributions of source code must retain the above copyright 143a68a926SJuli Mallett# notice, this list of conditions and the following disclaimer. 153a68a926SJuli Mallett# 2. Redistributions in binary form must reproduce the above copyright 163a68a926SJuli Mallett# notice, this list of conditions and the following disclaimer in the 173a68a926SJuli Mallett# documentation and/or other materials provided with the distribution. 18*8ce3644cSJung-uk Kim# 3. Neither the name of the University nor the names of its contributors 193a68a926SJuli Mallett# may be used to endorse or promote products derived from this software 203a68a926SJuli Mallett# without specific prior written permission. 213a68a926SJuli Mallett# 223a68a926SJuli Mallett# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 233a68a926SJuli Mallett# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 243a68a926SJuli Mallett# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 253a68a926SJuli Mallett# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 263a68a926SJuli Mallett# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 273a68a926SJuli Mallett# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 283a68a926SJuli Mallett# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 293a68a926SJuli Mallett# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 303a68a926SJuli Mallett# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 313a68a926SJuli Mallett# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 323a68a926SJuli Mallett# SUCH DAMAGE. 333a68a926SJuli Mallett# 343a68a926SJuli Mallett 353a68a926SJuli Mallettdefine(ack, `ifelse($1,0,incr($2),$2,0,`ack(DECR($1),1)', 363a68a926SJuli Mallett`ack(DECR($1), ack($1,DECR($2)))')') 37