Files
ioccc/1989/robison/index.html
T
Cody Boone Ferguson 81c75b0e98 Make INABIAF format consistent in index.html files
That is to say in the bugs file it will look something like:

	STATUS: INABIAF - please DO NOT fix

but as a html file it is already bold as a heading. This means there is
no need in the index.html file to have the explicit **DO NOT** as it's
in a code block and it is not consistent in what is in bugs.html. For
instance 1984/mullender had:

	STATUS: INABIAF - please **DO NOT** fix

but this meant the index.html file had the '**'s surrounding the DO NOT
which is not consistent with bugs.html.
2024-06-23 08:03:36 -07:00

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<h1>The International Obfuscated C Code Contest</h1>
<h2>1989/robison - Best minimal use of C</h2>
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<div class="navbar">
<a class="Left" href="../paul/index.html">&larr; paul</a>
<a class="Left" href="../index.html">&uarr; 1989 &uarr;</a>
<a class="Left" href="../roemer/index.html">roemer &rarr;</a>
<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/robison/robison.c">C code</a>
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<h2 id="author">Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Arch_D_Robison">Arch D. Robison</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
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<h2 id="to-build">To build:</h2>
<pre><code> make all</code></pre>
<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
<p>The current status of this entry is:</p>
<pre><code> STATUS: INABIAF - please DO NOT fix</code></pre>
<p>For more detailed information see <a href="../../bugs.html#1989_robison">1989/robison in bugs.html</a>.</p>
<h2 id="to-use">To use:</h2>
<pre><code> ./robison
# enter valid expressions</code></pre>
<h2 id="try">Try:</h2>
<pre><code> ./robison
11x10
# enter other expressions
./try.sh
echo 100 / 100 | ./robison # &lt;-- what happens here ?</code></pre>
<p>NOTE: This program will very likely crash or break into tiny bits :-) if you
feed it numbers with non-binary digits. This, as you might notice if you try one
of the above commands, can happen with other input as well. If you wish to
understand why this happens check the source code.</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>Sites with punch card facilities will be happy to note that
the source deck can be re-collated with an ASCII sort.</p>
<p>Note that this program uses only a small subset of the
constructs that the C language supports.</p>
<p>For an interesting document on APL, see
<a href="https://computerhistory.org/blog/the-apl-programming-language-source-code/" class="uri">https://computerhistory.org/blog/the-apl-programming-language-source-code/</a>.</p>
<h2 id="authors-remarks">Author’s remarks:</h2>
<p>This program is a handy picoAPL interpreter written in <code>C--</code>. It
outputs the evaluation of an
<a href="https://en.wikipedia.org/wiki/APL_(programming_language)">APL</a> expression from standard
input. Functions are limited to dyadic <code>+</code>,<code>-</code>,<code>x</code>, and unary <code>-</code>;
numerals must be binary. Parentheses may be used for
grouping. For example:</p>
<pre><code> 101x111-100</code></pre>
<p>prints:</p>
<pre><code> 1111</code></pre>
<p>That is <code>5x(7-4)</code> is <code>15</code>. (APL groups from right to left.)
Extending it to the full APL language should be trivial.</p>
<p>The <code>C--</code> language improves the C language by removing superfluous
and confusing features: arithmetic, logical operations, shifts,
relational operators, address-of, and flow control. In fact, the only
expressions retained are function calls, indirection, array
assignments, the ‘,’ operator, and <code>sizeof</code>. Despite these
restrictions, the <code>C--</code> program does arithmetic on arbitrarily
large binary numbers.</p>
<p>To obtain a <code>C--</code> reference, simply rip out the irrelevant pages
from your K&amp;R C manual. To obtain a <code>C--</code> compiler, simply rip
out the irrelevant bytes from your <code>cc</code> compiler.</p>
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<h1 id="inventory-for-1989robison">Inventory for 1989/robison</h1>
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<h2 id="primary-files">Primary files</h2>
<ul>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/robison/robison.c">robison.c</a> - entry source code</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/robison/Makefile">Makefile</a> - entry Makefile</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/robison/robison.orig.c">robison.orig.c</a> - original source code</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/robison/try.sh">try.sh</a> - script to try entry</li>
</ul>
<h2 id="secondary-files">Secondary files</h2>
<ul>
<li><a href="1989_robison.tar.bz2">1989_robison.tar.bz2</a> - download entry tarball</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/robison/README.md">README.md</a> - markdown source for this web page</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/robison/.entry.json">.entry.json</a> - entry summary and manifest in JSON</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/robison/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
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