xref: /original-bsd/usr.bin/m4/TEST/hanoi.m4 (revision 0aabd36e)
1#
2# Copyright (c) 1989 The Regents of the University of California.
3# All rights reserved.
4#
5# This code is derived from software contributed to Berkeley by
6# Ozan Yigit.
7#
8# Redistribution and use in source and binary forms are permitted
9# provided that the above copyright notice and this paragraph are
10# duplicated in all such forms and that any documentation,
11# advertising materials, and other materials related to such
12# distribution and use acknowledge that the software was developed
13# by the University of California, Berkeley.  The name of the
14# University may not be used to endorse or promote products derived
15# from this software without specific prior written permission.
16# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
17# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
18# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19#
20#	@(#)hanoi.m4	5.1 (Berkeley) 08/28/89
21#
22
23define(hanoi, `trans(A, B, C, $1)')
24
25define(moved,`move disk from $1 to $2
26')
27
28define(trans, `ifelse($4,1,`moved($1,$2)',
29	`trans($1,$3,$2,DECR($4))moved($1,$2)trans($3,$2,$1,DECR($4))')')
30