2 # Copyright (c) 1989, 1993
3 # The Regents of the University of California. All rights reserved.
5 # This code is derived from software contributed to Berkeley by
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9 # modification, are permitted provided that the following conditions
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12 # notice, this list of conditions and the following disclaimer.
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18 # This product includes software developed by the University of
19 # California, Berkeley and its contributors.
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21 # may be used to endorse or promote products derived from this software
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36 # @(#)ack.m4 8.1 (Berkeley) 6/6/93
39 define(ack, `ifelse($1,0,incr($2),$2,0,`ack(DECR($1),1)',
40 `ack(DECR($1), ack($1,DECR($2)))')')