244 lines
9.6 KiB
Plaintext
244 lines
9.6 KiB
Plaintext
#
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# Copyright (c) 1989 The Regents of the University of California.
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# All rights reserved.
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#
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# This code is derived from software contributed to Berkeley by
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# Ozan Yigit.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by the University of
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# California, Berkeley and its contributors.
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# 4. Neither the name of the University nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# @(#)test.m4 5.2 (Berkeley) 4/12/91
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#
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# test file for mp (not comprehensive)
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#
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# v7 m4 does not have `decr'.
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#
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define(DECR,`eval($1-1)')
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#
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# include string macros
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#
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include(string.m4)
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#
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# create some fortrash strings for an even uglier language
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#
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string(TEXT, "text")
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string(DATA, "data")
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string(BEGIN, "begin")
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string(END, "end")
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string(IF, "if")
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string(THEN, "then")
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string(ELSE, "else")
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string(CASE, "case")
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string(REPEAT, "repeat")
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string(WHILE, "while")
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string(DEFAULT, "default")
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string(UNTIL, "until")
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string(FUNCTION, "function")
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string(PROCEDURE, "procedure")
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string(EXTERNAL, "external")
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string(FORWARD, "forward")
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string(TYPE, "type")
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string(VAR, "var")
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string(CONST, "const")
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string(PROGRAM, "program")
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string(INPUT, "input")
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string(OUTPUT, "output")
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#
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divert(2)
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diversion #1
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divert(3)
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diversion #2
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divert(4)
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diversion #3
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divert(5)
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diversion #4
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divert(0)
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define(abc,xxx)
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ifdef(`abc',defined,undefined)
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#
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# v7 m4 does this wrong. The right output is
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# this is A vEry lon sEntEnCE
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# see m4 documentation for translit.
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#
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translit(`this is a very long sentence', abcdefg, ABCDEF)
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#
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# include towers-of-hanoi
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#
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include(hanoi.m4)
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#
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# some reasonable set of disks
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#
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hanoi(6)
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#
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# include ackermann's function
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#
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include(ack.m4)
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#
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# something like (3,3) will blow away un*x m4.
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#
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ack(2,3)
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#
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# include a square_root function for fixed nums
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#
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include(sqroot.m4)
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#
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# some square roots.
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#
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square_root(15)
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square_root(100)
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square_root(-4)
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square_root(21372)
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#
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# some textual material for enjoyment.
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#
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[taken from the 'Clemson University Computer Newsletter',
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September 1981, pp. 6-7]
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I am a wizard in the magical Kingdom of Transformation and I
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slay dragons for a living. Actually, I am a systems programmer.
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One of the problems with systems programming is explaining to
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non-computer enthusiasts what that is. All of the terms I use to
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describe my job are totally meaningless to them. Usually my response
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to questions about my work is to say as little as possible. For
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instance, if someone asks what happened at work this week, I say
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"Nothing much" and then I change the subject.
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With the assistance of my brother, a mechanical engineer, I have devised
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an analogy that everyone can understand. The analogy describes the
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"Kingdom of Transformation" where travelers wander and are magically
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transformed. This kingdom is the computer and the travelers are information.
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The purpose of the computer is to change information to a more meaningful
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forma. The law of conservation applies here: The computer never creates
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and never intentionally destroys data. With no further ado, let us travel
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to the Kingdom of Transformation:
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In a land far, far away, there is a magical kingdom called the Kingdom of
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Transformation. A king rules over this land and employs a Council of
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Wizardry. The main purpose of this kingdom is to provide a way for
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neighboring kingdoms to transform citizens into more useful citizens. This
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is done by allowing the citizens to enter the kingdom at one of its ports
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and to travel any of the many routes in the kingdom. They are magically
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transformed along the way. The income of the Kingdom of Transformation
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comes from the many toll roads within its boundaries.
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The Kingdom of Transformation was created when several kingdoms got
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together and discovered a mutual need for new talents and abilities for
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citizens. They employed CTK, Inc. (Creators of Transformation, Inc.) to
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create this kingdom. CTK designed the country, its transportation routes,
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and its laws of transformation, and created the major highway system.
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Hazards
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=======
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Because magic is not truly controllable, CTK invariably, but unknowingly,
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creates dragons. Dragons are huge fire-breathing beasts which sometimes
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injure or kill travelers. Fortunately, they do not travel, but always
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remain near their den.
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Other hazards also exist which are potentially harmful. As the roads
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become older and more weatherbeaten, pot-holes will develop, trees will
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fall on travelers, etc. CTK maintenance men are called to fix these
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problems.
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Wizards
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=======
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The wizards play a major role in creating and maintaining the kingdom but
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get little credit for their work because it is performed secretly. The
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wizards do not wan the workers or travelers to learn their incantations
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because many laws would be broken and chaos would result.
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CTK's grand design is always general enough to be applicable in many
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different situations. As a result, it is often difficult to use. The
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first duty of the wizards is to tailor the transformation laws so as to be
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more beneficial and easier to use in their particular environment.
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After creation of the kingdom, a major duty of the wizards is to search for
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and kill dragons. If travelers do not return on time or if they return
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injured, the ruler of the country contacts the wizards. If the wizards
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determine that the injury or death occurred due to the traveler's
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negligence, they provide the traveler's country with additional warnings.
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If not, they must determine if the cause was a road hazard or a dragon. If
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the suspect a road hazard, they call in a CTK maintenance man to locate the
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hazard and to eliminate it, as in repairing the pothole in the road. If
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they think that cause was a dragon, then they must find and slay it.
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The most difficult part of eliminating a dragon is finding it. Sometimes
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the wizard magically knows where the dragon's lair it, but often the wizard
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must send another traveler along the same route and watch to see where he
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disappears. This sounds like a failsafe method for finding dragons (and a
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suicide mission for thr traveler) but the second traveler does not always
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disappear. Some dragons eat any traveler who comes too close; others are
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very picky.
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The wizards may call in CTK who designed the highway system and
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transformation laws to help devise a way to locate the dragon. CTK also
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helps provide the right spell or incantation to slay the dragon. (There is
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no general spell to slay dragons; each dragon must be eliminated with a
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different spell.)
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Because neither CTK nor wizards are perfect, spells to not always work
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correctly. At best, nothing happens when the wrong spell is uttered. At
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worst, the dragon becomes a much larger dragon or multiplies into several
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smaller ones. In either case, new spells must be found.
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If all existing dragons are quiet (i.e. have eaten sufficiently), wizards
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have time to do other things. They hide in castles and practice spells and
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incatations. They also devise shortcuts for travelers and new laws of
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transformation.
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Changes in the Kingdom
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======================
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As new transformation kingdoms are created and old ones are maintained,
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CTK, Inc. is constantly learning new things. It learns ways to avoid
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creating some of the dragons that they have previously created. It also
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discovers new and better laws of transformation. As a result, CTK will
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periodically create a new grand design which is far better than the old.
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The wizards determine when is a good time to implement this new design.
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This is when the tourist season is slow or when no important travelers
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(VIPs) are to arrive. The kingdom must be closed for the actual
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implementation and is leter reopened as a new and better place to go.
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A final question you might ask is what happens when the number of tourists
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becomes too great for the kingdom to handle in a reasonable period of time
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(i.e., the tourist lines at the ports are too long). The Kingdom of
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Transformation has three options: (1) shorten the paths that a tourist must
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travel, or (2) convince CTK to develop a faster breed of horses so that the
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travelers can finish sooner, or (3) annex more territories so that the
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kingdom can handle more travelers.
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Thus ends the story of the Kingdom of Transformation. I hope this has
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explained my job to you: I slay dragons for a living.
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#
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#should do an automatic undivert..
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#
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