xref: /netbsd-src/usr.bin/m4/TEST/ack.m4 (revision cda4f8f6ee55684e8d311b86c99ea59191e6b74f)

define(ack, `ifelse($1,0,incr($2),$2,0,`ack(DECR($1),1)',
`ack(DECR($1), ack($1,DECR($2)))')')