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ack.m4 revision 1.4 
      1  1.4    tls #	$NetBSD: ack.m4,v 1.4 1995/09/28 05:37:54 tls Exp $
      2  1.3  glass #
      3  1.3  glass # Copyright (c) 1989, 1993
      4  1.3  glass #	The Regents of the University of California.  All rights reserved.
      5  1.3  glass #
      6  1.3  glass # This code is derived from software contributed to Berkeley by
      7  1.3  glass # Ozan Yigit.
      8  1.3  glass #
      9  1.3  glass # Redistribution and use in source and binary forms, with or without
     10  1.3  glass # modification, are permitted provided that the following conditions
     11  1.3  glass # are met:
     12  1.3  glass # 1. Redistributions of source code must retain the above copyright
     13  1.3  glass #    notice, this list of conditions and the following disclaimer.
     14  1.3  glass # 2. Redistributions in binary form must reproduce the above copyright
     15  1.3  glass #    notice, this list of conditions and the following disclaimer in the
     16  1.3  glass #    documentation and/or other materials provided with the distribution.
     17  1.3  glass # 3. All advertising materials mentioning features or use of this software
     18  1.3  glass #    must display the following acknowledgement:
     19  1.3  glass #	This product includes software developed by the University of
     20  1.3  glass #	California, Berkeley and its contributors.
     21  1.3  glass # 4. Neither the name of the University nor the names of its contributors
     22  1.3  glass #    may be used to endorse or promote products derived from this software
     23  1.3  glass #    without specific prior written permission.
     24  1.3  glass #
     25  1.3  glass # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  1.3  glass # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  1.3  glass # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  1.3  glass # ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  1.3  glass # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  1.3  glass # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  1.3  glass # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  1.3  glass # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  1.3  glass # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  1.3  glass # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  1.3  glass # SUCH DAMAGE.
     36  1.3  glass #
     37  1.3  glass #	@(#)ack.m4	8.1 (Berkeley) 6/6/93
     38  1.3  glass #
     39  1.3  glass 
     40  1.1    cgd define(ack, `ifelse($1,0,incr($2),$2,0,`ack(DECR($1),1)',
     41  1.1    cgd `ack(DECR($1), ack($1,DECR($2)))')')
     42