1# $OpenBSD: test.m4,v 1.3 2003/06/03 02:56:11 millert Exp $ 2# $NetBSD: test.m4,v 1.4 1995/09/28 05:38:05 tls Exp $ 3# 4# Copyright (c) 1989, 1993 5# The Regents of the University of California. All rights reserved. 6# 7# This code is derived from software contributed to Berkeley by 8# Ozan Yigit. 9# 10# Redistribution and use in source and binary forms, with or without 11# modification, are permitted provided that the following conditions 12# are met: 13# 1. Redistributions of source code must retain the above copyright 14# notice, this list of conditions and the following disclaimer. 15# 2. Redistributions in binary form must reproduce the above copyright 16# notice, this list of conditions and the following disclaimer in the 17# documentation and/or other materials provided with the distribution. 18# 3. Neither the name of the University nor the names of its contributors 19# may be used to endorse or promote products derived from this software 20# without specific prior written permission. 21# 22# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32# SUCH DAMAGE. 33# 34# $FreeBSD$ 35# 36# @(#)test.m4 8.1 (Berkeley) 6/6/93 37# 38 39# test file for mp (not comprehensive) 40# 41# v7 m4 does not have `decr'. 42# 43define(DECR,`eval($1-1)') 44# 45# include string macros 46# 47include(string.m4) 48# 49# create some fortrash strings for an even uglier language 50# 51string(TEXT, "text") 52string(DATA, "data") 53string(BEGIN, "begin") 54string(END, "end") 55string(IF, "if") 56string(THEN, "then") 57string(ELSE, "else") 58string(CASE, "case") 59string(REPEAT, "repeat") 60string(WHILE, "while") 61string(DEFAULT, "default") 62string(UNTIL, "until") 63string(FUNCTION, "function") 64string(PROCEDURE, "procedure") 65string(EXTERNAL, "external") 66string(FORWARD, "forward") 67string(TYPE, "type") 68string(VAR, "var") 69string(CONST, "const") 70string(PROGRAM, "program") 71string(INPUT, "input") 72string(OUTPUT, "output") 73# 74divert(2) 75diversion #1 76divert(3) 77diversion #2 78divert(4) 79diversion #3 80divert(5) 81diversion #4 82divert(0) 83define(abc,xxx) 84ifdef(`abc',defined,undefined) 85# 86# v7 m4 does this wrong. The right output is 87# this is A vEry lon sEntEnCE 88# see m4 documentation for translit. 89# 90translit(`this is a very long sentence', abcdefg, ABCDEF) 91# 92# include towers-of-hanoi 93# 94include(hanoi.m4) 95# 96# some reasonable set of disks 97# 98hanoi(6) 99# 100# include ackermann's function 101# 102include(ack.m4) 103# 104# something like (3,3) will blow away un*x m4. 105# 106ack(2,3) 107# 108# include a square_root function for fixed nums 109# 110include(sqroot.m4) 111# 112# some square roots. 113# 114square_root(15) 115square_root(100) 116square_root(-4) 117square_root(21372) 118# 119# some textual material for enjoyment. 120# 121[taken from the 'Clemson University Computer Newsletter', 122 September 1981, pp. 6-7] 123 124I am a wizard in the magical Kingdom of Transformation and I 125slay dragons for a living. Actually, I am a systems programmer. 126One of the problems with systems programming is explaining to 127non-computer enthusiasts what that is. All of the terms I use to 128describe my job are totally meaningless to them. Usually my response 129to questions about my work is to say as little as possible. For 130instance, if someone asks what happened at work this week, I say 131"Nothing much" and then I change the subject. 132 133With the assistance of my brother, a mechanical engineer, I have devised 134an analogy that everyone can understand. The analogy describes the 135"Kingdom of Transformation" where travelers wander and are magically 136transformed. This kingdom is the computer and the travelers are information. 137The purpose of the computer is to change information to a more meaningful 138forma. The law of conservation applies here: The computer never creates 139and never intentionally destroys data. With no further ado, let us travel 140to the Kingdom of Transformation: 141 142In a land far, far away, there is a magical kingdom called the Kingdom of 143Transformation. A king rules over this land and employs a Council of 144Wizardry. The main purpose of this kingdom is to provide a way for 145neighboring kingdoms to transform citizens into more useful citizens. This 146is done by allowing the citizens to enter the kingdom at one of its ports 147and to travel any of the many routes in the kingdom. They are magically 148transformed along the way. The income of the Kingdom of Transformation 149comes from the many toll roads within its boundaries. 150 151The Kingdom of Transformation was created when several kingdoms got 152together and discovered a mutual need for new talents and abilities for 153citizens. They employed CTK, Inc. (Creators of Transformation, Inc.) to 154create this kingdom. CTK designed the country, its transportation routes, 155and its laws of transformation, and created the major highway system. 156 157Hazards 158======= 159 160Because magic is not truly controllable, CTK invariably, but unknowingly, 161creates dragons. Dragons are huge fire-breathing beasts which sometimes 162injure or kill travelers. Fortunately, they do not travel, but always 163remain near their den. 164 165Other hazards also exist which are potentially harmful. As the roads 166become older and more weatherbeaten, pot-holes will develop, trees will 167fall on travelers, etc. CTK maintenance men are called to fix these 168problems. 169 170Wizards 171======= 172 173The wizards play a major role in creating and maintaining the kingdom but 174get little credit for their work because it is performed secretly. The 175wizards do not wan the workers or travelers to learn their incantations 176because many laws would be broken and chaos would result. 177 178CTK's grand design is always general enough to be applicable in many 179different situations. As a result, it is often difficult to use. The 180first duty of the wizards is to tailor the transformation laws so as to be 181more beneficial and easier to use in their particular environment. 182 183After creation of the kingdom, a major duty of the wizards is to search for 184and kill dragons. If travelers do not return on time or if they return 185injured, the ruler of the country contacts the wizards. If the wizards 186determine that the injury or death occurred due to the traveler's 187negligence, they provide the traveler's country with additional warnings. 188If not, they must determine if the cause was a road hazard or a dragon. If 189the suspect a road hazard, they call in a CTK maintenance man to locate the 190hazard and to eliminate it, as in repairing the pothole in the road. If 191they think that cause was a dragon, then they must find and slay it. 192 193The most difficult part of eliminating a dragon is finding it. Sometimes 194the wizard magically knows where the dragon's lair it, but often the wizard 195must send another traveler along the same route and watch to see where he 196disappears. This sounds like a failsafe method for finding dragons (and a 197suicide mission for thr traveler) but the second traveler does not always 198disappear. Some dragons eat any traveler who comes too close; others are 199very picky. 200 201The wizards may call in CTK who designed the highway system and 202transformation laws to help devise a way to locate the dragon. CTK also 203helps provide the right spell or incantation to slay the dragon. (There is 204no general spell to slay dragons; each dragon must be eliminated with a 205different spell.) 206 207Because neither CTK nor wizards are perfect, spells to not always work 208correctly. At best, nothing happens when the wrong spell is uttered. At 209worst, the dragon becomes a much larger dragon or multiplies into several 210smaller ones. In either case, new spells must be found. 211 212If all existing dragons are quiet (i.e. have eaten sufficiently), wizards 213have time to do other things. They hide in castles and practice spells and 214incatations. They also devise shortcuts for travelers and new laws of 215transformation. 216 217Changes in the Kingdom 218====================== 219 220As new transformation kingdoms are created and old ones are maintained, 221CTK, Inc. is constantly learning new things. It learns ways to avoid 222creating some of the dragons that they have previously created. It also 223discovers new and better laws of transformation. As a result, CTK will 224periodically create a new grand design which is far better than the old. 225The wizards determine when is a good time to implement this new design. 226This is when the tourist season is slow or when no important travelers 227(VIPs) are to arrive. The kingdom must be closed for the actual 228implementation and is leter reopened as a new and better place to go. 229 230A final question you might ask is what happens when the number of tourists 231becomes too great for the kingdom to handle in a reasonable period of time 232(i.e., the tourist lines at the ports are too long). The Kingdom of 233Transformation has three options: (1) shorten the paths that a tourist must 234travel, or (2) convince CTK to develop a faster breed of horses so that the 235travelers can finish sooner, or (3) annex more territories so that the 236kingdom can handle more travelers. 237 238Thus ends the story of the Kingdom of Transformation. I hope this has 239explained my job to you: I slay dragons for a living. 240 241# 242#should do an automatic undivert.. 243# 244