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 35# test file for mp (not comprehensive) 36# 37# v7 m4 does not have `decr'. 38# 39define(DECR,`eval($1-1)') 40# 41# include string macros 42# 43include(string.m4) 44# 45# create some fortrash strings for an even uglier language 46# 47string(TEXT, "text") 48string(DATA, "data") 49string(BEGIN, "begin") 50string(END, "end") 51string(IF, "if") 52string(THEN, "then") 53string(ELSE, "else") 54string(CASE, "case") 55string(REPEAT, "repeat") 56string(WHILE, "while") 57string(DEFAULT, "default") 58string(UNTIL, "until") 59string(FUNCTION, "function") 60string(PROCEDURE, "procedure") 61string(EXTERNAL, "external") 62string(FORWARD, "forward") 63string(TYPE, "type") 64string(VAR, "var") 65string(CONST, "const") 66string(PROGRAM, "program") 67string(INPUT, "input") 68string(OUTPUT, "output") 69# 70divert(2) 71diversion #1 72divert(3) 73diversion #2 74divert(4) 75diversion #3 76divert(5) 77diversion #4 78divert(0) 79define(abc,xxx) 80ifdef(`abc',defined,undefined) 81# 82# v7 m4 does this wrong. The right output is 83# this is A vEry lon sEntEnCE 84# see m4 documentation for translit. 85# 86translit(`this is a very long sentence', abcdefg, ABCDEF) 87# 88# include towers-of-hanoi 89# 90include(hanoi.m4) 91# 92# some reasonable set of disks 93# 94hanoi(6) 95# 96# include ackermann's function 97# 98include(ack.m4) 99# 100# something like (3,3) will blow away un*x m4. 101# 102ack(2,3) 103# 104# include a square_root function for fixed nums 105# 106include(sqroot.m4) 107# 108# some square roots. 109# 110square_root(15) 111square_root(100) 112square_root(-4) 113square_root(21372) 114# 115# some textual material for enjoyment. 116# 117[taken from the 'Clemson University Computer Newsletter', 118 September 1981, pp. 6-7] 119 120I am a wizard in the magical Kingdom of Transformation and I 121slay dragons for a living. Actually, I am a systems programmer. 122One of the problems with systems programming is explaining to 123non-computer enthusiasts what that is. All of the terms I use to 124describe my job are totally meaningless to them. Usually my response 125to questions about my work is to say as little as possible. For 126instance, if someone asks what happened at work this week, I say 127"Nothing much" and then I change the subject. 128 129With the assistance of my brother, a mechanical engineer, I have devised 130an analogy that everyone can understand. The analogy describes the 131"Kingdom of Transformation" where travelers wander and are magically 132transformed. This kingdom is the computer and the travelers are information. 133The purpose of the computer is to change information to a more meaningful 134forma. The law of conservation applies here: The computer never creates 135and never intentionally destroys data. With no further ado, let us travel 136to the Kingdom of Transformation: 137 138In a land far, far away, there is a magical kingdom called the Kingdom of 139Transformation. A king rules over this land and employs a Council of 140Wizardry. The main purpose of this kingdom is to provide a way for 141neighboring kingdoms to transform citizens into more useful citizens. This 142is done by allowing the citizens to enter the kingdom at one of its ports 143and to travel any of the many routes in the kingdom. They are magically 144transformed along the way. The income of the Kingdom of Transformation 145comes from the many toll roads within its boundaries. 146 147The Kingdom of Transformation was created when several kingdoms got 148together and discovered a mutual need for new talents and abilities for 149citizens. They employed CTK, Inc. (Creators of Transformation, Inc.) to 150create this kingdom. CTK designed the country, its transportation routes, 151and its laws of transformation, and created the major highway system. 152 153Hazards 154======= 155 156Because magic is not truly controllable, CTK invariably, but unknowingly, 157creates dragons. Dragons are huge fire-breathing beasts which sometimes 158injure or kill travelers. Fortunately, they do not travel, but always 159remain near their den. 160 161Other hazards also exist which are potentially harmful. As the roads 162become older and more weatherbeaten, pot-holes will develop, trees will 163fall on travelers, etc. CTK maintenance men are called to fix these 164problems. 165 166Wizards 167======= 168 169The wizards play a major role in creating and maintaining the kingdom but 170get little credit for their work because it is performed secretly. The 171wizards do not wan the workers or travelers to learn their incantations 172because many laws would be broken and chaos would result. 173 174CTK's grand design is always general enough to be applicable in many 175different situations. As a result, it is often difficult to use. The 176first duty of the wizards is to tailor the transformation laws so as to be 177more beneficial and easier to use in their particular environment. 178 179After creation of the kingdom, a major duty of the wizards is to search for 180and kill dragons. If travelers do not return on time or if they return 181injured, the ruler of the country contacts the wizards. If the wizards 182determine that the injury or death occurred due to the traveler's 183negligence, they provide the traveler's country with additional warnings. 184If not, they must determine if the cause was a road hazard or a dragon. If 185the suspect a road hazard, they call in a CTK maintenance man to locate the 186hazard and to eliminate it, as in repairing the pothole in the road. If 187they think that cause was a dragon, then they must find and slay it. 188 189The most difficult part of eliminating a dragon is finding it. Sometimes 190the wizard magically knows where the dragon's lair it, but often the wizard 191must send another traveler along the same route and watch to see where he 192disappears. This sounds like a failsafe method for finding dragons (and a 193suicide mission for thr traveler) but the second traveler does not always 194disappear. Some dragons eat any traveler who comes too close; others are 195very picky. 196 197The wizards may call in CTK who designed the highway system and 198transformation laws to help devise a way to locate the dragon. CTK also 199helps provide the right spell or incantation to slay the dragon. (There is 200no general spell to slay dragons; each dragon must be eliminated with a 201different spell.) 202 203Because neither CTK nor wizards are perfect, spells to not always work 204correctly. At best, nothing happens when the wrong spell is uttered. At 205worst, the dragon becomes a much larger dragon or multiplies into several 206smaller ones. In either case, new spells must be found. 207 208If all existing dragons are quiet (i.e. have eaten sufficiently), wizards 209have time to do other things. They hide in castles and practice spells and 210incatations. They also devise shortcuts for travelers and new laws of 211transformation. 212 213Changes in the Kingdom 214====================== 215 216As new transformation kingdoms are created and old ones are maintained, 217CTK, Inc. is constantly learning new things. It learns ways to avoid 218creating some of the dragons that they have previously created. It also 219discovers new and better laws of transformation. As a result, CTK will 220periodically create a new grand design which is far better than the old. 221The wizards determine when is a good time to implement this new design. 222This is when the tourist season is slow or when no important travelers 223(VIPs) are to arrive. The kingdom must be closed for the actual 224implementation and is leter reopened as a new and better place to go. 225 226A final question you might ask is what happens when the number of tourists 227becomes too great for the kingdom to handle in a reasonable period of time 228(i.e., the tourist lines at the ports are too long). The Kingdom of 229Transformation has three options: (1) shorten the paths that a tourist must 230travel, or (2) convince CTK to develop a faster breed of horses so that the 231travelers can finish sooner, or (3) annex more territories so that the 232kingdom can handle more travelers. 233 234Thus ends the story of the Kingdom of Transformation. I hope this has 235explained my job to you: I slay dragons for a living. 236 237# 238#should do an automatic undivert.. 239# 240