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improved indentation and whitespace for markdown code blocks

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All code blocks in markdown have been intended by at least 4 spaces.

We add `--tab-stop=8` to all `pandoc(1)` executions in order to set
a better tab stop indentation, especially for tab intended code blocks.

Changed `bin/pandoc-wrapper.sh` VERSION from "1.5.3 2024-03-26"
to "1.6 2024-03-31".

Fixed `1991/brnstnd/sorta.README.md` so that the sorta code
is code blocks.

Removed unneeded paragraph group in copyright in `inc/footer.default.html`.

Fixed excess whitespace after list Author on entry `index.html` page.

Changed `bin/output-index-author.sh` VERSION from "1.5.2 2024-03-26"
to "1.6 2024-03-31".

Performed `make www` to perform the above and test under macOS.

TODO: Fix the problem of the initial line of code being extra intended.
TODO: Fix excess whitespace around code that is inline.
This commit is contained in:
Landon Curt Noll committed 2024-04-01 04:48:48 -07:00
1 parent b84c27ce02
commit a996f8d2b8
734 files changed
+16723 -16963
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2013/README.md
+3 -3
View File
@@ -58,9 +58,9 @@ were not correctly parsed by the tool. The guidelines stated:
```
In cases where the above summary and the algorithm implemented by
the IOCCC size tool source code conflict, the algorithm implemented
by the IOCCC size tool source code is preferred by the judges.
In cases where the above summary and the algorithm implemented by
the IOCCC size tool source code conflict, the algorithm implemented
by the IOCCC size tool source code is preferred by the judges.
```
so this abuse was allowed (and encouraged). The judges hope that
2013/birken/README.md
+12 -12
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make alt
make alt
```
We recommend that you use the alt version first to see what this entry looked
@@ -12,7 +12,7 @@ version see the [original code](#original-code) section below.
## To use:
```sh
./birken.alt < 17_columns_wide_paint_by_numbers_file
./birken.alt < 17_columns_wide_paint_by_numbers_file
```
NOTE: if your terminal is messed up after running this (perhaps from exiting
@@ -31,7 +31,7 @@ it should you wish (see below).
To see the program run on each text file, try:
```sh
./try.alt.sh
./try.alt.sh
```
If you have perl installed it will also try a random run.
@@ -45,7 +45,7 @@ compile time. If you wish to speed it up by 100% you can instead do:
```sh
make clobber SLEEP=7500 alt
make clobber SLEEP=7500 alt
```
and then try `birken.alt` as above.
@@ -56,7 +56,7 @@ ctrl-c to terminate the program early but note that the terminal is likely to be
messed up. In that case try:
```sh
reset
reset
```
to make it sane again (running to completion will do that for you).
@@ -71,7 +71,7 @@ hard to see the art of the entry but you may do so if you wish.
### Original build:
```sh
make all
make all
```
@@ -85,7 +85,7 @@ Use `birken` as you would `birken.alt` above.
To use the demo script with the original code, try:
```sh
./try.sh
./try.sh
```
PLEASE be careful if you are sensitive to flashing colours!
@@ -320,16 +320,16 @@ This program demonstrates how to exploit a bug in IOCCC size tool version
If that line is added to the top of any program, the tool will report a size of 8.
```sh
$ ./iocccsize -i < prog.c
8
$ ./iocccsize -i < prog.c
8
```
When that line is deleted from this program, the tool properly reports the
secondary size limit of the program as 2048.
```sh
$ ./iocccsize -i < birken.c
2048
$ ./iocccsize -i < birken.c
2048
```
Although this bug provides an easy means of circumventing contest rule 2, as
@@ -358,7 +358,7 @@ Carefully selected variable names also yielded wonderful expressions like `l=0`,
sorts:
```c
[T][e][t]--; while(R+i) { s
[T][e][t]--; while(R+i) { s
```
The source is formatted to resemble the
2013/birken/index.html
+13 -14
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Michael_Birken">Michael Birken</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
<br><br></li>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,12 +141,12 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> alt</span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
<p>We recommend that you use the alt version first to see what this entry looked
like back in 2013 (with a configurable speed). If you wish to use the original
version see the <a href="#original-code">original code</a> section below.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./birken.alt</span> <span class="op">&lt;</span> 17_columns_wide_paint_by_numbers_file</span></code></pre></div>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./birken.alt</span> <span class="op">&lt;</span> 17_columns_wide_paint_by_numbers_file</span></code></pre></div>
<p>NOTE: if your terminal is messed up after running this (perhaps from exiting
before it finishes) try using <code>reset</code> to restore the terminal. This will clear
the screen.</p>
@@ -158,7 +157,7 @@ be problematic for some people, can be configured to different speeds by way of
the value used in <code>usleep(3)</code>. The default is <code>13500</code> but you can reconfigure
it should you wish (see below).</p>
<p>To see the program run on each text file, try:</p>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.alt.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.alt.sh</span></span></code></pre></div>
<p>If you have perl installed it will also try a random run.</p>
<p>Finding the ‘right’ default value was a fine line; the default, 15000
microseconds (0.015 seconds), will take quite a while to finish but it allows
@@ -166,24 +165,24 @@ one to more easily see what is going on. Even easier to see would be 25000 but
these values make it quite slow and one could easily lose interest. Like some
other entries where this was made an alternate version it is configurable at
compile time. If you wish to speed it up by 100% you can instead do:</p>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber SLEEP=7500 alt</span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> clobber SLEEP=7500 alt</span></code></pre></div>
<p>and then try <code>birken.alt</code> as above.</p>
<p>If you wish to speed that up 200% (300% total) you can use instead try
<code>SLEEP=3750</code>. Doing this you might find the right value to your liking; use
ctrl-c to terminate the program early but note that the terminal is likely to be
messed up. In that case try:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="ex">reset</span></span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">reset</span></span></code></pre></div>
<p>to make it sane again (running to completion will do that for you).</p>
<h2 id="original-code">Original code:</h2>
<p>The original code will run faster with modern systems which is likely to make it
hard to see the art of the entry but you may do so if you wish.</p>
<h3 id="original-build">Original build:</h3>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> all</span></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
<h3 id="original-use">Original use:</h3>
<p>Use <code>birken</code> as you would <code>birken.alt</code> above.</p>
<h3 id="original-try">Original try:</h3>
<p>To use the demo script with the original code, try:</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<p>PLEASE be careful if you are sensitive to flashing colours!</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>This program also wins the “Most amusing abuse of the iocccsize tool” award;
@@ -347,12 +346,12 @@ call to <code>fflush(3)</code> (N.B: see <a href="birken.alt.c">birken.alt.c</a>
<code>2013-07-30-v17</code>. The first line of the program is reproduced below.</p>
<p>char<em>_ = “’”“/</em>”;</p>
<p>If that line is added to the top of any program, the tool will report a size of 8.</p>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> ./iocccsize <span class="at">-i</span> <span class="op">&lt;</span> prog.c</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="ex">8</span></span></code></pre></div>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">$</span> ./iocccsize <span class="at">-i</span> <span class="op">&lt;</span> prog.c</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">8</span></span></code></pre></div>
<p>When that line is deleted from this program, the tool properly reports the
secondary size limit of the program as 2048.</p>
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> ./iocccsize <span class="at">-i</span> <span class="op">&lt;</span> birken.c</span>
<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a><span class="ex">2048</span></span></code></pre></div>
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">$</span> ./iocccsize <span class="at">-i</span> <span class="op">&lt;</span> birken.c</span>
<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">2048</span></span></code></pre></div>
<p>Although this bug provides an easy means of circumventing contest rule 2, as
demonstrated from the size value, this entry is not necessarily striving for a
‘worst abuse of the rules’ award.</p>
@@ -372,7 +371,7 @@ Pajitnov</a>’s original 1984
<p>Carefully selected variable names also yielded wonderful expressions like <code>l=0</code>,
<code>O=0</code>, <code>O=1</code> and <code>while(O)</code>. <code>"Tetris"</code> also makes a second appearance of
sorts:</p>
<div class="sourceCode" id="cb11"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="op">[</span>T<span class="op">][</span>e<span class="op">][</span>t<span class="op">]--;</span> <span class="cf">while</span><span class="op">(</span>R<span class="op">+</span>i<span class="op">)</span> <span class="op">{</span> s</span></code></pre></div>
<div class="sourceCode" id="cb11"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a> <span class="op">[</span>T<span class="op">][</span>e<span class="op">][</span>t<span class="op">]--;</span> <span class="cf">while</span><span class="op">(</span>R<span class="op">+</span>i<span class="op">)</span> <span class="op">{</span> s</span></code></pre></div>
<p>The source is formatted to resemble the
<a href="https://en.wikipedia.org/wiki/Tetris">Tetris</a> play-field mid-game. It is also
an homage to all the <a href="../../years.html">past IOCCC entries</a> formatted as a compact
2013/cable1/README.md
+9 -9
View File
@@ -1,21 +1,21 @@
## To build:
```sh
make
make
```
## To use:
```sh
./cable1 name group1 group2
./cable1 name group1 group2
```
## Try:
```sh
./try.sh
./try.sh
```
@@ -27,39 +27,39 @@ We need not limit ourselves to the two major political parties in the US today.
Let us consider:
```sh
./cable1 Cooper Mac PC
./cable1 Cooper Mac PC
```
Simon works for Apple, so you would expect Mac. :-)
Landon is a long time Mac user:
```sh
./cable1 Noll Mac PC
./cable1 Noll Mac PC
```
That works too! Now Leo brings PCs to the IOCCC judging for cross-platform
testing:
```sh
./cable1 Broukhis Mac PC
./cable1 Broukhis Mac PC
```
We can test other people. The late Steve Jobs:
```sh
./cable1 Jobs Mac PC
./cable1 Jobs Mac PC
```
That works! How about Bill?
```sh
./cable1 Gates Mac PC
./cable1 Gates Mac PC
```
A PC guy as expected. What about that other Steve?
```sh
./cable1 Ballmer Mac PC
./cable1 Ballmer Mac PC
```
Humm .. maybe there is a hidden reason he is leaving the late Micro$oft? :-)
2013/cable1/index.html
+10 -11
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Adrian_Cable">Adrian Cable</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
<br><br></li>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,28 +141,28 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable1</span> name group1 group2</span></code></pre></div>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable1</span> name group1 group2</span></code></pre></div>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>Partisan may be defined as a strong supporter of a cause, party or person.
We need not limit ourselves to the two major political parties in the US today.</p>
<p>Let us consider:</p>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable1</span> Cooper Mac PC</span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable1</span> Cooper Mac PC</span></code></pre></div>
<p>Simon works for Apple, so you would expect Mac. :-)
Landon is a long time Mac user:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable1</span> Noll Mac PC</span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable1</span> Noll Mac PC</span></code></pre></div>
<p>That works too! Now Leo brings PCs to the IOCCC judging for cross-platform
testing:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable1</span> Broukhis Mac PC</span></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable1</span> Broukhis Mac PC</span></code></pre></div>
<p>We can test other people. The late Steve Jobs:</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable1</span> Jobs Mac PC</span></code></pre></div>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable1</span> Jobs Mac PC</span></code></pre></div>
<p>That works! How about Bill?</p>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable1</span> Gates Mac PC</span></code></pre></div>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable1</span> Gates Mac PC</span></code></pre></div>
<p>A PC guy as expected. What about that other Steve?</p>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable1</span> Ballmer Mac PC</span></code></pre></div>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable1</span> Ballmer Mac PC</span></code></pre></div>
<p>Humm .. maybe there is a hidden reason he is leaving the late Micro$oft? :-)
Why late? Because:</p>
<figure>
2013/cable2/README.md
+4 -4
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
@@ -10,7 +10,7 @@ make
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2013 cable2 bugs](../../bugs.html#2013_cable2).
@@ -19,7 +19,7 @@ For more detailed information see [2013 cable2 bugs](../../bugs.html#2013_cable2
## To use:
```sh
./cable2 file.bmp [color]
./cable2 file.bmp [color]
```
@@ -28,7 +28,7 @@ For more detailed information see [2013 cable2 bugs](../../bugs.html#2013_cable2
For different OCR examples:
```sh
./try.sh
./try.sh
```
2013/cable2/index.html
+5 -6
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Adrian_Cable">Adrian Cable</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
<br><br></li>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,16 +141,16 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<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>
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
<p>For more detailed information see <a href="../../bugs.html#2013_cable2">2013 cable2 bugs</a>.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable2</span> file.bmp <span class="pp">[</span><span class="ss">color</span><span class="pp">]</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable2</span> file.bmp <span class="pp">[</span><span class="ss">color</span><span class="pp">]</span></span></code></pre></div>
<h2 id="try">Try:</h2>
<p>For different OCR examples:</p>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>We can confirm that this is the first time the IOCCC has been used
to peer-review a new research. We had quite a bit of fun with a sharpie and a
2013/cable3/README.md
+16 -16
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
An alternate version that should compile in Windows/MS Visual Studio is
@@ -11,14 +11,14 @@ available. See the [Alternate code](#alternate-code) section below.
## To use:
```sh
./cable3 bios-image-file floppy-image-file [harddisk-image-file]
./cable3 bios-image-file floppy-image-file [harddisk-image-file]
```
## Try:
```sh
./cable3.sh
./cable3.sh
```
NOTE: to quit the program type `QUITEMU`. You might have to be at the top level
@@ -47,7 +47,7 @@ Assuming `make` is available and will function:
```sh
make alt
make alt
```
@@ -174,7 +174,7 @@ Makefile definition of KB, use something slightly different - add the following
entry to the Preprocessor Definitions list in the Project Properties page:
```c
KB=(kb=H(8),kbhit())&&(r[1190]=getch(),H(7))
KB=(kb=H(8),kbhit())&&(r[1190]=getch(),H(7))
```
NOTE: this is done in the [Alternate code](#alternate-code).
@@ -190,7 +190,7 @@ will need to explicitly declare these functions by adding the appropriate
include to the top of the source:
```c
#include <unistd.h>
#include <unistd.h>
```
NOTE: this has been done in [cable3.c](cable3.c).
@@ -198,7 +198,7 @@ NOTE: this has been done in [cable3.c](cable3.c).
### Usage
```sh
./cable3 bios-image-file floppy-image-file [harddisk-image-file]
./cable3 bios-image-file floppy-image-file [harddisk-image-file]
```
PLEASE NOTE that under Unices the keyboard must be in raw mode for the emulator
@@ -206,9 +206,9 @@ to work properly. Therefore the emulator is best run from a shell script that
looks something like:
```sh
stty cbreak raw -echo min 0
./cable3 bios floppy.img harddisk.img
stty cooked echo
stty cbreak raw -echo min 0
./cable3 bios floppy.img harddisk.img
stty cooked echo
```
See the [cable3.sh](cable3.sh) script.
@@ -224,9 +224,9 @@ cooked). So, run the emulator using something like this script (provided as
[cable3.sh](cable3.sh)):
```sh
stty cbreak raw -echo min 0
./cable3 bios fd.img
stty cooked echo
stty cbreak raw -echo min 0
./cable3 bios fd.img
stty cooked echo
```
## To use the emulator - floppy + HD mode
@@ -238,9 +238,9 @@ For the more adventurous, you can start off with (for example) a blank 40MB
image file called hd.img made using e.g. Makefile. Then use:
```sh
stty cbreak raw -echo min 0
./cable3 bios fd.img hd.img
stty cooked echo
stty cbreak raw -echo min 0
./cable3 bios fd.img hd.img
stty cooked echo
```
Preparing the hard disk for use in the emulator is done just like a real PC.
2013/cable3/index.html
+17 -18
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Adrian_Cable">Adrian Cable</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
<br><br></li>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,13 +141,13 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<p>An alternate version that should compile in Windows/MS Visual Studio is
available. See the <a href="#alternate-code">Alternate code</a> section below.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable3</span> bios-image-file floppy-image-file <span class="pp">[</span><span class="ss">harddisk</span><span class="pp">-</span><span class="ss">image</span><span class="pp">-</span><span class="ss">file</span><span class="pp">]</span></span></code></pre></div>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable3</span> bios-image-file floppy-image-file <span class="pp">[</span><span class="ss">harddisk</span><span class="pp">-</span><span class="ss">image</span><span class="pp">-</span><span class="ss">file</span><span class="pp">]</span></span></code></pre></div>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable3.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable3.sh</span></span></code></pre></div>
<p>NOTE: to quit the program type <code>QUITEMU</code>. You might have to be at the top level
directory of the drive, <code>A:</code> or <code>C:</code>.</p>
<p>To send an <code>Alt+XXX</code> key combination, press (<code>^A</code> / <code>Ctrl+A</code>) then the key, so
@@ -163,7 +162,7 @@ combinations are left for the discovery of the user.</p>
<p>An alternate version, which should compile in Windows, is provided.</p>
<h3 id="alternate-build">Alternate build:</h3>
<p>Assuming <code>make</code> is available and will function:</p>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> alt</span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
<h3 id="alternate-use">Alternate use:</h3>
<p>Use <code>cable3.alt</code> as you would <code>cable3</code> above.</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
@@ -265,7 +264,7 @@ has no <code>stty</code>. Therefore the Makefile includes a <code>-D</code> opti
non-UNIX platforms. For example, for Windows/MS Visual Studio, instead of the
Makefile definition of KB, use something slightly different - add the following
entry to the Preprocessor Definitions list in the Project Properties page:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a>KB<span class="op">=(</span>kb<span class="op">=</span>H<span class="op">(</span><span class="dv">8</span><span class="op">),</span>kbhit<span class="op">())&amp;&amp;(</span>r<span class="op">[</span><span class="dv">1190</span><span class="op">]=</span>getch<span class="op">(),</span>H<span class="op">(</span><span class="dv">7</span><span class="op">))</span></span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> KB<span class="op">=(</span>kb<span class="op">=</span>H<span class="op">(</span><span class="dv">8</span><span class="op">),</span>kbhit<span class="op">())&amp;&amp;(</span>r<span class="op">[</span><span class="dv">1190</span><span class="op">]=</span>getch<span class="op">(),</span>H<span class="op">(</span><span class="dv">7</span><span class="op">))</span></span></code></pre></div>
<p>NOTE: this is done in the <a href="#alternate-code">Alternate code</a>.</p>
<h3 id="posix-portability-note">POSIX portability note</h3>
<p>The code as supplied uses implicit function declarations for POSIX file I/O and
@@ -274,16 +273,16 @@ architecture. For some systems (e.g. 32-bit Mac OS X, which uses 64-bit file
offsets) this is not the case, and to run successfully on these systems, you
will need to explicitly declare these functions by adding the appropriate
include to the top of the source:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="pp">#include </span><span class="im">&lt;unistd.h&gt;</span></span></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="pp">#include </span><span class="im">&lt;unistd.h&gt;</span></span></code></pre></div>
<p>NOTE: this has been done in <a href="cable3.c">cable3.c</a>.</p>
<h3 id="usage">Usage</h3>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable3</span> bios-image-file floppy-image-file <span class="pp">[</span><span class="ss">harddisk</span><span class="pp">-</span><span class="ss">image</span><span class="pp">-</span><span class="ss">file</span><span class="pp">]</span></span></code></pre></div>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable3</span> bios-image-file floppy-image-file <span class="pp">[</span><span class="ss">harddisk</span><span class="pp">-</span><span class="ss">image</span><span class="pp">-</span><span class="ss">file</span><span class="pp">]</span></span></code></pre></div>
<p>PLEASE NOTE that under Unices the keyboard must be in raw mode for the emulator
to work properly. Therefore the emulator is best run from a shell script that
looks something like:</p>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="fu">stty</span> cbreak raw <span class="at">-echo</span> min 0</span>
<span id="cb8-2"><a href="#cb8-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable3</span> bios floppy.img harddisk.img</span>
<span id="cb8-3"><a href="#cb8-3" aria-hidden="true" tabindex="-1"></a><span class="fu">stty</span> cooked echo</span></code></pre></div>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">stty</span> cbreak raw <span class="at">-echo</span> min 0</span>
<span id="cb8-2"><a href="#cb8-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable3</span> bios floppy.img harddisk.img</span>
<span id="cb8-3"><a href="#cb8-3" aria-hidden="true" tabindex="-1"></a> <span class="fu">stty</span> cooked echo</span></code></pre></div>
<p>See the <a href="cable3.sh">cable3.sh</a> script.</p>
<h2 id="to-use-the-emulator---floppy-mode-only">To use the emulator - floppy mode only</h2>
<p>The simplest use of the emulator is with a single floppy boot disk image, like
@@ -292,17 +291,17 @@ the <code>fd.img</code> provided, which is a FreeDOS boot disk.</p>
put the keyboard into raw mode (and afterwards it needs to be put back to
cooked). So, run the emulator using something like this script (provided as
<a href="cable3.sh">cable3.sh</a>):</p>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="fu">stty</span> cbreak raw <span class="at">-echo</span> min 0</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable3</span> bios fd.img</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a><span class="fu">stty</span> cooked echo</span></code></pre></div>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">stty</span> cbreak raw <span class="at">-echo</span> min 0</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable3</span> bios fd.img</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a> <span class="fu">stty</span> cooked echo</span></code></pre></div>
<h2 id="to-use-the-emulator---floppy-hd-mode">To use the emulator - floppy + HD mode</h2>
<p>Easiest to start with is to try a ready-made 40MB hard disk image containing a
whole bunch of software which is in the included file <code>hd.img</code>.</p>
<p>For the more adventurous, you can start off with (for example) a blank 40MB
image file called hd.img made using e.g. Makefile. Then use:</p>
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="fu">stty</span> cbreak raw <span class="at">-echo</span> min 0</span>
<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./cable3</span> bios fd.img hd.img</span>
<span id="cb10-3"><a href="#cb10-3" aria-hidden="true" tabindex="-1"></a><span class="fu">stty</span> cooked echo</span></code></pre></div>
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">stty</span> cbreak raw <span class="at">-echo</span> min 0</span>
<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cable3</span> bios fd.img hd.img</span>
<span id="cb10-3"><a href="#cb10-3" aria-hidden="true" tabindex="-1"></a> <span class="fu">stty</span> cooked echo</span></code></pre></div>
<p>Preparing the hard disk for use in the emulator is done just like a real PC.
Boot the emulator, and use <code>FDISK</code> to partition the hard disk. When it’s done
<code>FDISK</code> will reboot the emulator. Then you can use <code>FORMAT C:</code> and you are done. The
2013/dlowe/README.md
+21 -21
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
@@ -10,7 +10,7 @@ make
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2013 dlowe bugs](../../bugs.html#2013_dlowe).
@@ -19,7 +19,7 @@ For more detailed information see [2013 dlowe bugs](../../bugs.html#2013_dlowe).
## To use:
```sh
./dlowe [number...]
./dlowe [number...]
```
where `[number...]` is one or more number, space separated.
@@ -28,15 +28,15 @@ where `[number...]` is one or more number, space separated.
## Try:
```sh
./try.sh
./try.sh
```
What is different about the above if you do something like:
```sh
echo 'IOCCC winning entry 2013/dlowe' > ioccc.txt
./try.sh
rm -f ioccc.txt
echo 'IOCCC winning entry 2013/dlowe' > ioccc.txt
./try.sh
rm -f ioccc.txt
```
?
@@ -44,7 +44,7 @@ rm -f ioccc.txt
To make it simpler to see try showing just the different line like:
```sh
./diff.sh
./diff.sh
```
@@ -59,10 +59,10 @@ with one argument or when all arguments are equal?
For extra fun, compile and run [fun.c](fun.c):
```c
#include <stdio.h>
int main() {
printf("%d %d %d\n", (int)(-1.0/0.0), (int)(0.0/0.0), (int)(1.0/0.0));
}
#include <stdio.h>
int main() {
printf("%d %d %d\n", (int)(-1.0/0.0), (int)(0.0/0.0), (int)(1.0/0.0));
}
```
with gcc and clang.
@@ -71,19 +71,19 @@ with gcc and clang.
With GCC (4.7.2), we get
```
-2147483648 -2147483648 -2147483648
-2147483648 -2147483648 -2147483648
```
and with clang (3.3), we get
```
-2147483648 0 2147483647
-2147483648 0 2147483647
```
and with Apple clang version 15.0.0 (clang-1500.0.40.1) in 2023, we get:
```
1840985120 -2033041452 35979112
1840985120 -2033041452 35979112
```
Which one is correct? :)
@@ -92,7 +92,7 @@ NOTE: `make all` will compile [fun.c](fun.c) but to provide a different compiler
you can do something like:
```sh
make CC=clang fun
make CC=clang fun
```
@@ -106,17 +106,17 @@ A tiny implementation of command-line
### Synopsis
```sh
$ ./sparkl 0 1 2 3 4 5 6 7
▁▂▃▄▅▆▇▉
$ ./sparkl 0 1 2 3 4 5 6 7
▁▂▃▄▅▆▇▉
$ echo "sparkline of file lengths: $(wc -c * | awk '{print $1}' | xargs ./sparkl)"
sparkline of file sizes: ▁▁▁▃▃▂▁▂▁▁▉
$ echo "sparkline of file lengths: $(wc -c * | awk '{print $1}' | xargs ./sparkl)"
sparkline of file sizes: ▁▁▁▃▃▂▁▂▁▁▉
```
NOTE: this has been provided in [slflen.sh](slflen.sh) so you can try:
```sh
./slflen.sh
./slflen.sh
```
instead (which [try.sh](try.sh) also uses).
2013/dlowe/index.html
+22 -23
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#J_David_Lowe">J. David Lowe</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
<br><br></li>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,56 +141,56 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<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>
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
<p>For more detailed information see <a href="../../bugs.html#2013_dlowe">2013 dlowe bugs</a>.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./dlowe</span> <span class="pp">[</span><span class="ss">number...</span><span class="pp">]</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./dlowe</span> <span class="pp">[</span><span class="ss">number...</span><span class="pp">]</span></span></code></pre></div>
<p>where <code>[number...]</code> is one or more number, space separated.</p>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<p>What is different about the above if you do something like:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> <span class="st">&#39;IOCCC winning entry 2013/dlowe&#39;</span> <span class="op">&gt;</span> ioccc.txt</span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span>
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a><span class="fu">rm</span> <span class="at">-f</span> ioccc.txt</span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&#39;IOCCC winning entry 2013/dlowe&#39;</span> <span class="op">&gt;</span> ioccc.txt</span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span>
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a> <span class="fu">rm</span> <span class="at">-f</span> ioccc.txt</span></code></pre></div>
<p>?</p>
<p>To make it simpler to see try showing just the different line like:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./diff.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./diff.sh</span></span></code></pre></div>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>We liked how this entry used Unicode, specifically UTF-8, in a somewhat
obfuscated way.</p>
<p>Also, why doesn’t it crash but instead produces a correct output when called
with one argument or when all arguments are equal?</p>
<p>For extra fun, compile and run <a href="fun.c">fun.c</a>:</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="pp">#include </span><span class="im">&lt;stdio.h&gt;</span></span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a><span class="dt">int</span> main<span class="op">()</span> <span class="op">{</span></span>
<span id="cb7-3"><a href="#cb7-3" aria-hidden="true" tabindex="-1"></a> printf<span class="op">(</span><span class="st">&quot;</span><span class="sc">%d</span><span class="st"> </span><span class="sc">%d</span><span class="st"> </span><span class="sc">%d\n</span><span class="st">&quot;</span><span class="op">,</span> <span class="op">(</span><span class="dt">int</span><span class="op">)(-</span><span class="fl">1.0</span><span class="op">/</span><span class="fl">0.0</span><span class="op">),</span> <span class="op">(</span><span class="dt">int</span><span class="op">)(</span><span class="fl">0.0</span><span class="op">/</span><span class="fl">0.0</span><span class="op">),</span> <span class="op">(</span><span class="dt">int</span><span class="op">)(</span><span class="fl">1.0</span><span class="op">/</span><span class="fl">0.0</span><span class="op">));</span></span>
<span id="cb7-4"><a href="#cb7-4" aria-hidden="true" tabindex="-1"></a><span class="op">}</span></span></code></pre></div>
<div class="sourceCode" id="cb7"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="pp">#include </span><span class="im">&lt;stdio.h&gt;</span></span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a> <span class="dt">int</span> main<span class="op">()</span> <span class="op">{</span></span>
<span id="cb7-3"><a href="#cb7-3" aria-hidden="true" tabindex="-1"></a> printf<span class="op">(</span><span class="st">&quot;</span><span class="sc">%d</span><span class="st"> </span><span class="sc">%d</span><span class="st"> </span><span class="sc">%d\n</span><span class="st">&quot;</span><span class="op">,</span> <span class="op">(</span><span class="dt">int</span><span class="op">)(-</span><span class="fl">1.0</span><span class="op">/</span><span class="fl">0.0</span><span class="op">),</span> <span class="op">(</span><span class="dt">int</span><span class="op">)(</span><span class="fl">0.0</span><span class="op">/</span><span class="fl">0.0</span><span class="op">),</span> <span class="op">(</span><span class="dt">int</span><span class="op">)(</span><span class="fl">1.0</span><span class="op">/</span><span class="fl">0.0</span><span class="op">));</span></span>
<span id="cb7-4"><a href="#cb7-4" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span></code></pre></div>
<p>with gcc and clang.</p>
<p>With GCC (4.7.2), we get</p>
<pre><code>-2147483648 -2147483648 -2147483648</code></pre>
<pre><code> -2147483648 -2147483648 -2147483648</code></pre>
<p>and with clang (3.3), we get</p>
<pre><code>-2147483648 0 2147483647</code></pre>
<pre><code> -2147483648 0 2147483647</code></pre>
<p>and with Apple clang version 15.0.0 (clang-1500.0.40.1) in 2023, we get:</p>
<pre><code>1840985120 -2033041452 35979112</code></pre>
<pre><code> 1840985120 -2033041452 35979112</code></pre>
<p>Which one is correct? :)</p>
<p>NOTE: <code>make all</code> will compile <a href="fun.c">fun.c</a> but to provide a different compiler
you can do something like:</p>
<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> CC=clang fun</span></code></pre></div>
<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> CC=clang fun</span></code></pre></div>
<h2 id="authors-remarks">Author’s remarks:</h2>
<h3 id="sparkl">sparkl</h3>
<p>A tiny implementation of command-line
<a href="https://en.wikipedia.org/wiki/Sparkline">sparkline</a> data visualization.</p>
<h3 id="synopsis">Synopsis</h3>
<div class="sourceCode" id="cb12"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> ./sparkl 0 1 2 3 4 5 6 7</span>
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a><span class="ex">▁▂▃▄▅▆▇▉</span></span>
<div class="sourceCode" id="cb12"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">$</span> ./sparkl 0 1 2 3 4 5 6 7</span>
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">▁▂▃▄▅▆▇▉</span></span>
<span id="cb12-3"><a href="#cb12-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> echo <span class="st">&quot;sparkline of file lengths: </span><span class="va">$(</span><span class="fu">wc</span> <span class="at">-c</span> <span class="pp">*</span> <span class="kw">|</span> <span class="fu">awk</span> <span class="st">&#39;{print $1}&#39;</span> <span class="kw">|</span> <span class="fu">xargs</span> ./sparkl<span class="va">)</span><span class="st">&quot;</span></span>
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a><span class="ex">sparkline</span> of file sizes: ▁▁▁▃▃▂▁▂▁▁▉</span></code></pre></div>
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">$</span> echo <span class="st">&quot;sparkline of file lengths: </span><span class="va">$(</span><span class="fu">wc</span> <span class="at">-c</span> <span class="pp">*</span> <span class="kw">|</span> <span class="fu">awk</span> <span class="st">&#39;{print $1}&#39;</span> <span class="kw">|</span> <span class="fu">xargs</span> ./sparkl<span class="va">)</span><span class="st">&quot;</span></span>
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a> <span class="ex">sparkline</span> of file sizes: ▁▁▁▃▃▂▁▂▁▁▉</span></code></pre></div>
<p>NOTE: this has been provided in <a href="slflen.sh">slflen.sh</a> so you can try:</p>
<div class="sourceCode" id="cb13"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./slflen.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb13"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./slflen.sh</span></span></code></pre></div>
<p>instead (which <a href="try.sh">try.sh</a> also uses).</p>
<h3 id="description">Description</h3>
<p>This is a handy little tool for visualizing numeric series from the
2013/endoh1/README.md
+23 -23
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
@@ -10,7 +10,7 @@ make
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2013 endoh1 bugs](../../bugs.html#2013_endoh1).
@@ -19,20 +19,20 @@ For more detailed information see [2013 endoh1 bugs](../../bugs.html#2013_endoh1
## To use:
```sh
./endoh1 [file.lazy]
./endoh1 [file.lazy]
```
## Try:
```sh
./try.sh
./try.sh
```
You might also enjoy running:
```sh
cc -E endoh1.c | less
cc -E endoh1.c | less
```
@@ -51,9 +51,9 @@ This entry can be considered an abuse of the GCC's optimizer; it takes GCC about
### Remarks
```sh
less endoh1.c
gcc -o endoh1 endoh1.c
./endoh1
less endoh1.c
gcc -o endoh1 endoh1.c
./endoh1
```
... Isn't there any more to it?
@@ -67,8 +67,8 @@ This program will shine when it is used as a library. For example,
[hello.lazy](hello.lazy) is a "Hello world" program written in Lazy K.
```sh
$ lazy hello.lazy
Hello, world!
$ lazy hello.lazy
Hello, world!
```
where `lazy` is [a reference implementation of Lazy K][3]. At the same time,
@@ -76,9 +76,9 @@ where `lazy` is [a reference implementation of Lazy K][3]. At the same time,
as a library.
```sh
$ gcc -o hello -xc hello.lazy
$ ./hello
Hello, world!
$ gcc -o hello -xc hello.lazy
$ ./hello
Hello, world!
```
In other words, this program is a kind of [polyglot][4].
@@ -137,9 +137,9 @@ I confirmed that the program successfully worked with the following compilers:
Recent compilers with `-Wall -W -Wextra -pedantic` say nothing.
```sh
gcc -Wall -W -Wextra -pedantic prog.c
clang -Wall -W -Wextra -pedantic prog.c
tcc -Wall -W -Wextra -pedantic prog.c
gcc -Wall -W -Wextra -pedantic prog.c
clang -Wall -W -Wextra -pedantic prog.c
tcc -Wall -W -Wextra -pedantic prog.c
```
I think it will work on almost all platforms. I confirmed:
@@ -174,7 +174,7 @@ combinator calculus. The rewriting rules are shown in the shape of the code.
Consider a sequence of function applications in C:
```c
s(x)(x)(x)(x)...
s(x)(x)(x)(x)...
```
What type should `s` have? Unfortunately, C does *not* provide a "recursive
@@ -183,7 +183,7 @@ type", such as `typedef f (*f)();`.
So, I used a heavily nested function pointer type:
```c
typedef void *(*(*(*...(*(f))()...)())())
typedef void *(*(*(*...(*(f))()...)())())
```
This limits how many arguments one function can be consecutively applied to.
@@ -208,11 +208,11 @@ So, I addressed this issue by generating many function definitions
statically by (ab)using macros:
```c
void *x1; void f1(void *y) { return apply(x1, y); }
void *x2; void f2(void *y) { return apply(x2, y); }
void *x3; void f3(void *y) { return apply(x3, y); }
...
void *(h[]) = { f1, f2, f3, ... }
void *x1; void f1(void *y) { return apply(x1, y); }
void *x2; void f2(void *y) { return apply(x2, y); }
void *x3; void f3(void *y) { return apply(x3, y); }
...
void *(h[]) = { f1, f2, f3, ... }
```
and by allotting each of them when a closure is needed.
2013/endoh1/index.html
+24 -25
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Yusuke_Endoh">Yusuke Endoh</a><br>
Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
<br><br></li>
Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em></li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,17 +141,17 @@ Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<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>
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
<p>For more detailed information see <a href="../../bugs.html#2013_endoh1">2013 endoh1 bugs</a>.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh1</span> <span class="pp">[</span><span class="ss">file.lazy</span><span class="pp">]</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh1</span> <span class="pp">[</span><span class="ss">file.lazy</span><span class="pp">]</span></span></code></pre></div>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<p>You might also enjoy running:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> <span class="at">-E</span> endoh1.c <span class="kw">|</span> <span class="fu">less</span></span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> <span class="at">-E</span> endoh1.c <span class="kw">|</span> <span class="fu">less</span></span></code></pre></div>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>We liked this entry because it can serve as a standalone program as well as an
include file; and, as usual, because its input data is at least as obfuscated as
@@ -161,23 +160,23 @@ the program itself.</p>
4x longer to compile it with -O3 than without, compared to clang’s 2x.</p>
<h2 id="authors-remarks">Author’s remarks:</h2>
<h3 id="remarks">Remarks</h3>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="fu">less</span> endoh1.c</span>
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> <span class="at">-o</span> endoh1 endoh1.c</span>
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh1</span></span></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">less</span> endoh1.c</span>
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> <span class="at">-o</span> endoh1 endoh1.c</span>
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh1</span></span></code></pre></div>
<p>… Isn’t there any more to it?</p>
<p>Yes, of course.</p>
<p>This is a tool <em>for C programmers</em> to play the <a href="http://en.wikipedia.org/wiki/SKI_combinator_calculus">SKI combinator calculus</a>,
especially, <a href="https://tromp.github.io/cl/lazy-k.html">Lazy K</a>.</p>
<p>This program will shine when it is used as a library. For example,
<a href="hello.lazy">hello.lazy</a> is a “Hello world” program written in Lazy K.</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> lazy hello.lazy</span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a><span class="ex">Hello,</span> world!</span></code></pre></div>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">$</span> lazy hello.lazy</span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">Hello,</span> world!</span></code></pre></div>
<p>where <code>lazy</code> is <a href="https://github.com/irori/lazyk">a reference implementation of Lazy K</a>. At the same time,
<a href="hello.lazy">hello.lazy</a> is <em>a valid C program</em> that uses <a href="endoh1.c">endoh1.c</a>
as a library.</p>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> gcc <span class="at">-o</span> hello <span class="at">-xc</span> hello.lazy</span>
<span id="cb8-2"><a href="#cb8-2" aria-hidden="true" tabindex="-1"></a><span class="ex">$</span> ./hello</span>
<span id="cb8-3"><a href="#cb8-3" aria-hidden="true" tabindex="-1"></a><span class="ex">Hello,</span> world!</span></code></pre></div>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">$</span> gcc <span class="at">-o</span> hello <span class="at">-xc</span> hello.lazy</span>
<span id="cb8-2"><a href="#cb8-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">$</span> ./hello</span>
<span id="cb8-3"><a href="#cb8-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">Hello,</span> world!</span></code></pre></div>
<p>In other words, this program is a kind of <a href="http://en.wikipedia.org/wiki/Polyglot_%28computing%29">polyglot</a>.</p>
<p>The usage is simple: you just have to wrap Lazy K program with <code>#include "endoh1.c"</code>. Note that <code>#</code> is a comment in Lazy K.</p>
<h3 id="obfuscation">Obfuscation</h3>
@@ -211,9 +210,9 @@ section</a>.</p>
</ul></li>
</ul>
<p>Recent compilers with <code>-Wall -W -Wextra -pedantic</code> say nothing.</p>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> prog.c</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="fu">clang</span> <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> prog.c</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a><span class="ex">tcc</span> <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> prog.c</span></code></pre></div>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> prog.c</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">clang</span> <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> prog.c</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">tcc</span> <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> prog.c</span></code></pre></div>
<p>I think it will work on almost all platforms. I confirmed:</p>
<ul>
<li>Ubuntu Linux</li>
@@ -236,11 +235,11 @@ evaluates it.</p>
combinator calculus. The rewriting rules are shown in the shape of the code.</p>
<h4 id="abuse-of-function-pointers">Abuse of function pointers</h4>
<p>Consider a sequence of function applications in C:</p>
<div class="sourceCode" id="cb10"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a>s<span class="op">(</span>x<span class="op">)(</span>x<span class="op">)(</span>x<span class="op">)(</span>x<span class="op">)...</span></span></code></pre></div>
<div class="sourceCode" id="cb10"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a> s<span class="op">(</span>x<span class="op">)(</span>x<span class="op">)(</span>x<span class="op">)(</span>x<span class="op">)...</span></span></code></pre></div>
<p>What type should <code>s</code> have? Unfortunately, C does <em>not</em> provide a “recursive
type”, such as <code>typedef f (*f)();</code>.</p>
<p>So, I used a heavily nested function pointer type:</p>
<div class="sourceCode" id="cb11"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="kw">typedef</span> <span class="dt">void</span> <span class="op">*(*(*(*...(*(</span>f<span class="op">))()...)())())</span></span></code></pre></div>
<div class="sourceCode" id="cb11"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a> <span class="kw">typedef</span> <span class="dt">void</span> <span class="op">*(*(*(*...(*(</span>f<span class="op">))()...)())())</span></span></code></pre></div>
<p>This limits how many arguments one function can be consecutively applied to.
But you can increase the number by tweaking the definition of macro <code>p</code>.</p>
<h4 id="code-duplication-by-macros">Code duplication by macros</h4>
@@ -256,11 +255,11 @@ environment which is a reference to non-local variable.</p>
(It is feasible by dynamic code generation, but it is far from portable.)</p>
<p>So, I addressed this issue by generating many function definitions
statically by (ab)using macros:</p>
<div class="sourceCode" id="cb12"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="dt">void</span> <span class="op">*</span>x1<span class="op">;</span> <span class="dt">void</span> f1<span class="op">(</span><span class="dt">void</span> <span class="op">*</span>y<span class="op">)</span> <span class="op">{</span> <span class="cf">return</span> apply<span class="op">(</span>x1<span class="op">,</span> y<span class="op">);</span> <span class="op">}</span></span>
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a><span class="dt">void</span> <span class="op">*</span>x2<span class="op">;</span> <span class="dt">void</span> f2<span class="op">(</span><span class="dt">void</span> <span class="op">*</span>y<span class="op">)</span> <span class="op">{</span> <span class="cf">return</span> apply<span class="op">(</span>x2<span class="op">,</span> y<span class="op">);</span> <span class="op">}</span></span>
<span id="cb12-3"><a href="#cb12-3" aria-hidden="true" tabindex="-1"></a><span class="dt">void</span> <span class="op">*</span>x3<span class="op">;</span> <span class="dt">void</span> f3<span class="op">(</span><span class="dt">void</span> <span class="op">*</span>y<span class="op">)</span> <span class="op">{</span> <span class="cf">return</span> apply<span class="op">(</span>x3<span class="op">,</span> y<span class="op">);</span> <span class="op">}</span></span>
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a><span class="op">...</span></span>
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a><span class="dt">void</span> <span class="op">*(</span>h<span class="op">[])</span> <span class="op">=</span> <span class="op">{</span> f1<span class="op">,</span> f2<span class="op">,</span> f3<span class="op">,</span> <span class="op">...</span> <span class="op">}</span></span></code></pre></div>
<div class="sourceCode" id="cb12"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a> <span class="dt">void</span> <span class="op">*</span>x1<span class="op">;</span> <span class="dt">void</span> f1<span class="op">(</span><span class="dt">void</span> <span class="op">*</span>y<span class="op">)</span> <span class="op">{</span> <span class="cf">return</span> apply<span class="op">(</span>x1<span class="op">,</span> y<span class="op">);</span> <span class="op">}</span></span>
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a> <span class="dt">void</span> <span class="op">*</span>x2<span class="op">;</span> <span class="dt">void</span> f2<span class="op">(</span><span class="dt">void</span> <span class="op">*</span>y<span class="op">)</span> <span class="op">{</span> <span class="cf">return</span> apply<span class="op">(</span>x2<span class="op">,</span> y<span class="op">);</span> <span class="op">}</span></span>
<span id="cb12-3"><a href="#cb12-3" aria-hidden="true" tabindex="-1"></a> <span class="dt">void</span> <span class="op">*</span>x3<span class="op">;</span> <span class="dt">void</span> f3<span class="op">(</span><span class="dt">void</span> <span class="op">*</span>y<span class="op">)</span> <span class="op">{</span> <span class="cf">return</span> apply<span class="op">(</span>x3<span class="op">,</span> y<span class="op">);</span> <span class="op">}</span></span>
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a> <span class="op">...</span></span>
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a> <span class="dt">void</span> <span class="op">*(</span>h<span class="op">[])</span> <span class="op">=</span> <span class="op">{</span> f1<span class="op">,</span> f2<span class="op">,</span> f3<span class="op">,</span> <span class="op">...</span> <span class="op">}</span></span></code></pre></div>
<p>and by allotting each of them when a closure is needed.</p>
<p>This leads to another limitation: the number of pre-defined closures limits how
many identifiers (<code>S</code> <code>K</code> <code>I</code>) one program can use.</p>
2013/endoh2/README.md
+19 -19
View File
@@ -1,14 +1,14 @@
## To build:
```sh
make
make
```
## To use:
```sh
make check
make check
```
You'll need to have both [Ruby](https://www.ruby-lang.org) and
@@ -24,7 +24,7 @@ download one or both before exiting.
## Try:
```sh
less jpeg.c
less jpeg.c
```
Next look at `jpeg.jpg` in an image viewer program.
@@ -74,25 +74,25 @@ This program uses (a part of) Proggy Tiny Fonts
which is distributed in MIT License:
```
Copyright (c) 2004, 2005 Tristan Grimmer
Copyright (c) 2004, 2005 Tristan Grimmer
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
```
2013/endoh2/index.html
+20 -21
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Yusuke_Endoh">Yusuke Endoh</a><br>
Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
<br><br></li>
Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em></li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,9 +141,9 @@ Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> check</span></code></pre></div>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> check</span></code></pre></div>
<p>You’ll need to have both <a href="https://www.ruby-lang.org">Ruby</a> and
<a href="https://imagemagick.org/">ImageMagick</a> installed to run all the automated
checks.</p>
@@ -153,7 +152,7 @@ section to enjoy the entry. The <a href="Makefile">Makefile</a> <code>check</cod
you have both and if either is not found it will report it and tell you where to
download one or both before exiting.</p>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="fu">less</span> jpeg.c</span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">less</span> jpeg.c</span></code></pre></div>
<p>Next look at <code>jpeg.jpg</code> in an image viewer program.</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>This is a program which, when fed its own source, generates a program that
@@ -187,25 +186,25 @@ year.</p>
<h3 id="legal">Legal</h3>
<p>This program uses (a part of) Proggy Tiny Fonts
which is distributed in MIT License:</p>
<pre><code>Copyright (c) 2004, 2005 Tristan Grimmer
<pre><code> Copyright (c) 2004, 2005 Tristan Grimmer
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the &quot;Software&quot;),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the &quot;Software&quot;),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.</code></pre>
THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.</code></pre>
<!--
Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
2013/endoh3/README.md
+35 -35
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
@@ -10,7 +10,7 @@ make
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2013 endoh3 bugs](../../bugs.html#2013_endoh3).
@@ -19,7 +19,7 @@ For more detailed information see [2013 endoh3 bugs](../../bugs.html#2013_endoh3
## To use:
```sh
./endoh3
./endoh3
```
This program plays sound. See [FAQ 3.10 - How do I compile and use an IOCCC
@@ -30,13 +30,13 @@ system up for this or if you want to verify that everything is oky.
## Try:
```sh
./try.sh
./try.sh
./try.sh ABC
./try.sh ABC
./try.sh test.abc yankee.abc
./try.sh test.abc yankee.abc
./try.sh *.abc
./try.sh *.abc
```
The script will check for SoX first and next `padsp` from `PulseAudio` and
@@ -76,28 +76,28 @@ notation](http://en.wikipedia.org/wiki/ABC_notation).
Try:
```sh
cc -o endoh3 endoh3.c
echo "CDEFGABc" | ./endoh3 > /dev/dsp
cc -o endoh3 endoh3.c
echo "CDEFGABc" | ./endoh3 > /dev/dsp
```
If `/dev/dsp` is not available on your system, use an OSS sound wrapper such
as `padsp` or `aoss`:
```sh
echo "CDEFGABc" | ./endoh3 | padsp tee /dev/dsp > /dev/null
echo "CDEFGABc" | ./endoh3 | padsp tee /dev/dsp > /dev/null
```
If you are using Mac OS X, try [sox](http://sox.sourceforge.net/) like so:
```sh
echo "CDEFGABc" | ./endoh3 | sox -q -traw -r8000 -b8 -e unsigned-integer - -tcoreaudio
echo "CDEFGABc" | ./endoh3 | sox -q -traw -r8000 -b8 -e unsigned-integer - -tcoreaudio
```
If that does not work, use the attached script to convert the output into a wave
file format:
```sh
echo "CDEFGABc" | ./endoh3 | ruby wavify.rb > cde.wav
echo "CDEFGABc" | ./endoh3 | ruby wavify.rb > cde.wav
```
and play `cde.wav`.
@@ -108,8 +108,8 @@ do so like:
```sh
cat twinkle.abc | ./endoh3 > /dev/dsp
cat menuet.abc | ./endoh3 > /dev/dsp
cat twinkle.abc | ./endoh3 > /dev/dsp
cat menuet.abc | ./endoh3 > /dev/dsp
```
but you should be able to modify it a way to meet your system requirements as
@@ -186,37 +186,37 @@ You know, it is ["the famous song"](http://en.wikipedia.org/wiki/4%E2%80%B233%E2
Here is a magical expression which I found by brute-force:
```c
(c % 32 + 5) * 9 / 5 % 13 + n / 32 * 12 - 22
(c % 32 + 5) * 9 / 5 % 13 + n / 32 * 12 - 22
```
Interestingly, it converts an ASCII number of ABC notes
to the corresponding tone number.
```
'C' (ASCII 67) => 3
'D' (ASCII 68) => 5
'E' (ASCII 69) => 7
'F' (ASCII 70) => 9
'G' (ASCII 71) => 10
'A' (ASCII 65) => 12
'B' (ASCII 66) => 14
'c' (ASCII 99) => 15
'd' (ASCII 100) => 17
'e' (ASCII 101) => 19
'f' (ASCII 102) => 20
'g' (ASCII 103) => 22
'a' (ASCII 97) => 24
'b' (ASCII 98) => 26
'C' (ASCII 67) => 3
'D' (ASCII 68) => 5
'E' (ASCII 69) => 7
'F' (ASCII 70) => 9
'G' (ASCII 71) => 10
'A' (ASCII 65) => 12
'B' (ASCII 66) => 14
'c' (ASCII 99) => 15
'd' (ASCII 100) => 17
'e' (ASCII 101) => 19
'f' (ASCII 102) => 20
'g' (ASCII 103) => 22
'a' (ASCII 97) => 24
'b' (ASCII 98) => 26
```
By the way, you can write a half-tone by the following characters.
```
'K' => 4 (= C#)
'L' => 6 (= D#)
'U' => 8 (= F#)
'V' => 11 (= G#)
'P' => 13 (= A#)
'K' => 4 (= C#)
'L' => 6 (= D#)
'U' => 8 (= F#)
'V' => 11 (= G#)
'P' => 13 (= A#)
```
Note that the tone numbers simply enumerate the semi-tone steps. So we can
@@ -229,7 +229,7 @@ frequency by multiplying the value by `n` times.
Finally, the following code generates a saw wave:
```c
for(c = 0; c < len; c++) putchar(a = n * D);
for(c = 0; c < len; c++) putchar(a = n * D);
```
where `D` is a frequency and `a` is a variable whose type is `char`. By
2013/endoh3/index.html
+36 -37
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Yusuke_Endoh">Yusuke Endoh</a><br>
Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
<br><br></li>
Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em></li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,24 +141,24 @@ Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<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>
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
<p>For more detailed information see <a href="../../bugs.html#2013_endoh3">2013 endoh3 bugs</a>.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh3</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh3</span></span></code></pre></div>
<p>This program plays sound. See <a href="../../faq.html#sox">FAQ 3.10 - How do I compile and use an IOCCC
entry that requires sound?</a> if you do not know how to set your
system up for this or if you want to verify that everything is oky.</p>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span>
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span> ABC</span>
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span> ABC</span>
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span> test.abc yankee.abc</span>
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span> test.abc yankee.abc</span>
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span> <span class="pp">*</span>.abc</span></code></pre></div>
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span> <span class="pp">*</span>.abc</span></code></pre></div>
<p>The script will check for SoX first and next <code>padsp</code> from <code>PulseAudio</code> and
finally if neither are found if you have <code>ruby(1)</code> installed it’ll use the
included ruby script to convert it to a WAV file for you to play.</p>
@@ -181,21 +180,21 @@ will remain the same for historical purposes.</p>
<p>This is a sound synthesizer for a subset of <a href="http://en.wikipedia.org/wiki/ABC_notation">ABC music
notation</a>.</p>
<p>Try:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> <span class="at">-o</span> endoh3 endoh3.c</span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> <span class="st">&quot;CDEFGABc&quot;</span> <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="op">&gt;</span> /dev/dsp</span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> <span class="at">-o</span> endoh3 endoh3.c</span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&quot;CDEFGABc&quot;</span> <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="op">&gt;</span> /dev/dsp</span></code></pre></div>
<p>If <code>/dev/dsp</code> is not available on your system, use an OSS sound wrapper such
as <code>padsp</code> or <code>aoss</code>:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> <span class="st">&quot;CDEFGABc&quot;</span> <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="kw">|</span> <span class="ex">padsp</span> tee /dev/dsp <span class="op">&gt;</span> /dev/null</span></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&quot;CDEFGABc&quot;</span> <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="kw">|</span> <span class="ex">padsp</span> tee /dev/dsp <span class="op">&gt;</span> /dev/null</span></code></pre></div>
<p>If you are using Mac OS X, try <a href="http://sox.sourceforge.net/">sox</a> like so:</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> <span class="st">&quot;CDEFGABc&quot;</span> <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="kw">|</span> <span class="fu">sox</span> <span class="at">-q</span> <span class="at">-traw</span> <span class="at">-r8000</span> <span class="at">-b8</span> <span class="at">-e</span> unsigned-integer <span class="at">-</span> <span class="at">-tcoreaudio</span></span></code></pre></div>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&quot;CDEFGABc&quot;</span> <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="kw">|</span> <span class="fu">sox</span> <span class="at">-q</span> <span class="at">-traw</span> <span class="at">-r8000</span> <span class="at">-b8</span> <span class="at">-e</span> unsigned-integer <span class="at">-</span> <span class="at">-tcoreaudio</span></span></code></pre></div>
<p>If that does not work, use the attached script to convert the output into a wave
file format:</p>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> <span class="st">&quot;CDEFGABc&quot;</span> <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="kw">|</span> <span class="ex">ruby</span> wavify.rb <span class="op">&gt;</span> cde.wav</span></code></pre></div>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&quot;CDEFGABc&quot;</span> <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="kw">|</span> <span class="ex">ruby</span> wavify.rb <span class="op">&gt;</span> cde.wav</span></code></pre></div>
<p>and play <code>cde.wav</code>.</p>
<p>You can also enjoy some music scores that I attached. With <code>/dev/dsp</code> you can
do so like:</p>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cat</span> twinkle.abc <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="op">&gt;</span> /dev/dsp</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="fu">cat</span> menuet.abc <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="op">&gt;</span> /dev/dsp</span></code></pre></div>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cat</span> twinkle.abc <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="op">&gt;</span> /dev/dsp</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">cat</span> menuet.abc <span class="kw">|</span> <span class="ex">./endoh3</span> <span class="op">&gt;</span> /dev/dsp</span></code></pre></div>
<p>but you should be able to modify it a way to meet your system requirements as
described above.</p>
<h3 id="obfuscation">Obfuscation</h3>
@@ -258,29 +257,29 @@ But I do not attach it to protect you from W****r.</p>
You know, it is <a href="http://en.wikipedia.org/wiki/4%E2%80%B233%E2%80%B3">“the famous song”</a>.</p>
<h3 id="spoiler">Spoiler</h3>
<p>Here is a magical expression which I found by brute-force:</p>
<div class="sourceCode" id="cb10"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="op">(</span>c <span class="op">%</span> <span class="dv">32</span> <span class="op">+</span> <span class="dv">5</span><span class="op">)</span> <span class="op">*</span> <span class="dv">9</span> <span class="op">/</span> <span class="dv">5</span> <span class="op">%</span> <span class="dv">13</span> <span class="op">+</span> n <span class="op">/</span> <span class="dv">32</span> <span class="op">*</span> <span class="dv">12</span> <span class="op">-</span> <span class="dv">22</span></span></code></pre></div>
<div class="sourceCode" id="cb10"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a> <span class="op">(</span>c <span class="op">%</span> <span class="dv">32</span> <span class="op">+</span> <span class="dv">5</span><span class="op">)</span> <span class="op">*</span> <span class="dv">9</span> <span class="op">/</span> <span class="dv">5</span> <span class="op">%</span> <span class="dv">13</span> <span class="op">+</span> n <span class="op">/</span> <span class="dv">32</span> <span class="op">*</span> <span class="dv">12</span> <span class="op">-</span> <span class="dv">22</span></span></code></pre></div>
<p>Interestingly, it converts an ASCII number of ABC notes
to the corresponding tone number.</p>
<pre><code>&#39;C&#39; (ASCII 67) =&gt; 3
&#39;D&#39; (ASCII 68) =&gt; 5
&#39;E&#39; (ASCII 69) =&gt; 7
&#39;F&#39; (ASCII 70) =&gt; 9
&#39;G&#39; (ASCII 71) =&gt; 10
&#39;A&#39; (ASCII 65) =&gt; 12
&#39;B&#39; (ASCII 66) =&gt; 14
&#39;c&#39; (ASCII 99) =&gt; 15
&#39;d&#39; (ASCII 100) =&gt; 17
&#39;e&#39; (ASCII 101) =&gt; 19
&#39;f&#39; (ASCII 102) =&gt; 20
&#39;g&#39; (ASCII 103) =&gt; 22
&#39;a&#39; (ASCII 97) =&gt; 24
&#39;b&#39; (ASCII 98) =&gt; 26</code></pre>
<pre><code> &#39;C&#39; (ASCII 67) =&gt; 3
&#39;D&#39; (ASCII 68) =&gt; 5
&#39;E&#39; (ASCII 69) =&gt; 7
&#39;F&#39; (ASCII 70) =&gt; 9
&#39;G&#39; (ASCII 71) =&gt; 10
&#39;A&#39; (ASCII 65) =&gt; 12
&#39;B&#39; (ASCII 66) =&gt; 14
&#39;c&#39; (ASCII 99) =&gt; 15
&#39;d&#39; (ASCII 100) =&gt; 17
&#39;e&#39; (ASCII 101) =&gt; 19
&#39;f&#39; (ASCII 102) =&gt; 20
&#39;g&#39; (ASCII 103) =&gt; 22
&#39;a&#39; (ASCII 97) =&gt; 24
&#39;b&#39; (ASCII 98) =&gt; 26</code></pre>
<p>By the way, you can write a half-tone by the following characters.</p>
<pre><code>&#39;K&#39; =&gt; 4 (= C#)
&#39;L&#39; =&gt; 6 (= D#)
&#39;U&#39; =&gt; 8 (= F#)
&#39;V&#39; =&gt; 11 (= G#)
&#39;P&#39; =&gt; 13 (= A#)</code></pre>
<pre><code> &#39;K&#39; =&gt; 4 (= C#)
&#39;L&#39; =&gt; 6 (= D#)
&#39;U&#39; =&gt; 8 (= F#)
&#39;V&#39; =&gt; 11 (= G#)
&#39;P&#39; =&gt; 13 (= A#)</code></pre>
<p>Note that the tone numbers simply enumerate the semi-tone steps. So we can
calculate the frequency easily: <code>pow(2, n / 12.0)</code>. Then, how can we calculate
<code>pow</code> without <code>math.h</code>? <code>pow(2, 1.0 / 12.0)</code> is approximated by <code>89/84.</code>. (I
@@ -288,7 +287,7 @@ found this approximation by using the <a href="http://en.wikipedia.org/wiki/Ster
tree</a>.) We can gain the
frequency by multiplying the value by <code>n</code> times.</p>
<p>Finally, the following code generates a saw wave:</p>
<div class="sourceCode" id="cb13"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="cf">for</span><span class="op">(</span>c <span class="op">=</span> <span class="dv">0</span><span class="op">;</span> c <span class="op">&lt;</span> len<span class="op">;</span> c<span class="op">++)</span> putchar<span class="op">(</span>a <span class="op">=</span> n <span class="op">*</span> D<span class="op">);</span></span></code></pre></div>
<div class="sourceCode" id="cb13"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a> <span class="cf">for</span><span class="op">(</span>c <span class="op">=</span> <span class="dv">0</span><span class="op">;</span> c <span class="op">&lt;</span> len<span class="op">;</span> c<span class="op">++)</span> putchar<span class="op">(</span>a <span class="op">=</span> n <span class="op">*</span> D<span class="op">);</span></span></code></pre></div>
<p>where <code>D</code> is a frequency and <code>a</code> is a variable whose type is <code>char</code>. By
assigning <code>float</code> to <code>char</code> variable, the implicit type conversion is performed
from <code>float</code> to <code>char</code> (modulo 256).</p>
2013/endoh4/README.md
+15 -15
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
If you wish to change the size (see the [Author's remarks](#authors-remarks)
@@ -9,7 +9,7 @@ below) you can do so with the `SIZE` variable. For instance you can do:
```sh
make clobber SIZE=50,50 all
make clobber SIZE=50,50 all
```
but you can also do this directly with the [endoh4.sh](endoh4.sh) script as
@@ -21,7 +21,7 @@ described below.
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2013 endoh4 bugs](../../bugs.html#2013_endoh4).
@@ -30,8 +30,8 @@ For more detailed information see [2013 endoh4 bugs](../../bugs.html#2013_endoh4
## To use:
```sh
./endoh4 < file
./endoh4.sh file
./endoh4 < file
./endoh4.sh file
```
The second form is preferable as it will temporarily make the cursor invisible
@@ -42,7 +42,7 @@ line it will feed to the program [endoh4.c](endoh4.c).
## Try:
```sh
./endoh4.sh cube.txt
./endoh4.sh cube.txt
```
Hit ctrl-c to end the program.
@@ -52,13 +52,13 @@ The author recommends the use of xterm.
For an example, if you are a football/soccer fan, try:
```sh
./endoh4.sh solids/archimedian-solid/a11-truncated-icosahedron.txt
./endoh4.sh solids/archimedian-solid/a11-truncated-icosahedron.txt
```
You can provide more than one file:
```sh
./endoh4.sh solids/archimedian-solid/a11-truncated-icosahedron.txt cube.txt
./endoh4.sh solids/archimedian-solid/a11-truncated-icosahedron.txt cube.txt
```
Hit ctrl-c/intr to go to the next file.
@@ -67,7 +67,7 @@ If you wish to change the size to `50,50` without passing any arg:
```sh
SIZE=50,50 ./endoh4.sh
SIZE=50,50 ./endoh4.sh
```
Not specifying a file feeds [endoh4.c](endoh4.c) to the program.
@@ -116,15 +116,15 @@ clang, and tcc. It should not trigger warnings with `-pedantic` and `-Wextra`.
You may want to use `tput` to hide the terminal cursor.
```sh
tput civis
./endoh4 < cube.txt
tput cnorm
tput civis
./endoh4 < cube.txt
tput cnorm
```
or
```sh
./endoh4.sh cube.txt
./endoh4.sh cube.txt
```
### Bonuses
@@ -132,14 +132,14 @@ or
You can change the screen size. Let the aspect ratio be about 3:1.
```sh
cc -DS=120,40 -o endoh4 endoh4.c
cc -DS=120,40 -o endoh4 endoh4.c
```
The shape of this code is the geometric net of a regular tetrahedron.
So, try:
```sh
./endoh4 < endoh4.c # or ./endoh4.sh
./endoh4 < endoh4.c # or ./endoh4.sh
```
The [solids/](solids/) directory includes various solid data:
2013/endoh4/index.html
+16 -17
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Yusuke_Endoh">Yusuke Endoh</a><br>
Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
<br><br></li>
Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em></li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,33 +141,33 @@ Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<p>If you wish to change the size (see the <a href="#authors-remarks">Author’s remarks</a>
below) you can do so with the <code>SIZE</code> variable. For instance you can do:</p>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber SIZE=50,50 all</span></code></pre></div>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> clobber SIZE=50,50 all</span></code></pre></div>
<p>but you can also do this directly with the <a href="endoh4.sh">endoh4.sh</a> script as
described below.</p>
<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>
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
<p>For more detailed information see <a href="../../bugs.html#2013_endoh4">2013 endoh4 bugs</a>.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh4</span> <span class="op">&lt;</span> file</span>
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh4.sh</span> file</span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh4</span> <span class="op">&lt;</span> file</span>
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh4.sh</span> file</span></code></pre></div>
<p>The second form is preferable as it will temporarily make the cursor invisible
as recommended by the author. If no file is specified in the <code>./endoh4.sh</code> command
line it will feed to the program <a href="endoh4.c">endoh4.c</a>.</p>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh4.sh</span> cube.txt</span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh4.sh</span> cube.txt</span></code></pre></div>
<p>Hit ctrl-c to end the program.</p>
<p>The author recommends the use of xterm.</p>
<p>For an example, if you are a football/soccer fan, try:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh4.sh</span> solids/archimedian-solid/a11-truncated-icosahedron.txt</span></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh4.sh</span> solids/archimedian-solid/a11-truncated-icosahedron.txt</span></code></pre></div>
<p>You can provide more than one file:</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh4.sh</span> solids/archimedian-solid/a11-truncated-icosahedron.txt cube.txt</span></code></pre></div>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh4.sh</span> solids/archimedian-solid/a11-truncated-icosahedron.txt cube.txt</span></code></pre></div>
<p>Hit ctrl-c/intr to go to the next file.</p>
<p>If you wish to change the size to <code>50,50</code> without passing any arg:</p>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="va">SIZE</span><span class="op">=</span>50,50 <span class="ex">./endoh4.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="va">SIZE</span><span class="op">=</span>50,50 <span class="ex">./endoh4.sh</span></span></code></pre></div>
<p>Not specifying a file feeds <a href="endoh4.c">endoh4.c</a> to the program.</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>This program is formatted as the net for a tetrahedron (hint: try feeding the
@@ -204,17 +203,17 @@ triangulated)</li>
clang, and tcc. It should not trigger warnings with <code>-pedantic</code> and <code>-Wextra</code>.</p>
<h3 id="tips">Tips</h3>
<p>You may want to use <code>tput</code> to hide the terminal cursor.</p>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="fu">tput</span> civis</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh4</span> <span class="op">&lt;</span> cube.txt</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a><span class="fu">tput</span> cnorm</span></code></pre></div>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">tput</span> civis</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh4</span> <span class="op">&lt;</span> cube.txt</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a> <span class="fu">tput</span> cnorm</span></code></pre></div>
<p>or</p>
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh4.sh</span> cube.txt</span></code></pre></div>
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh4.sh</span> cube.txt</span></code></pre></div>
<h3 id="bonuses">Bonuses</h3>
<p>You can change the screen size. Let the aspect ratio be about 3:1.</p>
<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> <span class="at">-DS</span><span class="op">=</span>120,40 <span class="at">-o</span> endoh4 endoh4.c</span></code></pre></div>
<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> <span class="at">-DS</span><span class="op">=</span>120,40 <span class="at">-o</span> endoh4 endoh4.c</span></code></pre></div>
<p>The shape of this code is the geometric net of a regular tetrahedron.
So, try:</p>
<div class="sourceCode" id="cb12"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh4</span> <span class="op">&lt;</span> endoh4.c <span class="co"># or ./endoh4.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb12"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./endoh4</span> <span class="op">&lt;</span> endoh4.c <span class="co"># or ./endoh4.sh</span></span></code></pre></div>
<p>The <a href="solids/">solids/</a> directory includes various solid data:</p>
<ul>
<li><a href="http://en.wikipedia.org/wiki/Platonic_solid">Platonic solids</a></li>
2013/hou/README.md
+12 -12
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make all
make all
```
@@ -10,7 +10,7 @@ make all
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2013 hou bugs](../../bugs.html#2013_hou).
@@ -19,7 +19,7 @@ For more detailed information see [2013 hou bugs](../../bugs.html#2013_hou).
## To use:
```sh
./hou [scene-file-name] [options]
./hou [scene-file-name] [options]
```
Follow the instructions in `stdout`, preferably with an auto-refreshing PPM
@@ -30,7 +30,7 @@ effects should be more or less recognizable when you see 16.
## Try:
```sh
./try.sh
./try.sh
```
Try opening the file noted by the program then let the program run a while and
@@ -63,8 +63,8 @@ NOTE: the author refers to [a.c](a.c), placed in a gzipped file `a.c.gz`. We do
include it but it can be generated like:
```sh
cc -Wall hou.c -o hou -lm
./hou > a.c
cc -Wall hou.c -o hou -lm
./hou > a.c
```
but there is no need to do this as the Makefile takes care of it without even
@@ -79,7 +79,7 @@ This program is a programmable rendering engine with a built-in default scene.
The standard command line is:
```sh
./hou [scene-file-name] [options]
./hou [scene-file-name] [options]
```
As `hou` runs, it writes a progressively refining image to a ppm file specified
@@ -182,11 +182,11 @@ doesn't copy saved sessions across different endianness.
### Spoiler
```
3225 3225 3225 9 9 3225 3225
1 1 1 1 1 1 1 1 1 1
4225 1226 1 1 1 1 1222 1226
1 1 1 1 1 1 1 1 1
4226 1 4226 8 4222 4226 1 1
3225 3225 3225 9 9 3225 3225
1 1 1 1 1 1 1 1 1 1
4225 1226 1 1 1 1 1222 1226
1 1 1 1 1 1 1 1 1
4226 1 4226 8 4222 4226 1 1
```
The program consists of a recursive-descent interpreter, a `3DDDA` (3D Discrete
2013/hou/doc/example.html
+219 -219
View File
@@ -125,38 +125,38 @@
<h1 id="scene-format-documentation">Scene format documentation</h1>
<p>The file must be encoded in UTF-8 as the BOF marker indicates.</p>
<p>You can directly feed it to the renderer. If you’re wondering about what the following code block does, that’s why:)</p>
<pre><code>@|?|?z#
@|||?z&amp;
&gt;?Sedvf
??Tdeu#
&gt;&gt;Tdeui
??Tdmmf
??[[euf
?}?Oq}e
?}?Oqqf
v}?|q}e
v}?|qqf
?Sj|?{f
?Tjk?{e
FF?Oqq$
RR?Oqq$
^^?Oqq$
jj?Oqq$
vv?|qq$
IOBMqqe
U]BMqqe
aiBMqqe
muBMqqe
EEEJpp%
QQEJpp%
]]EJpp%
iiEJpp%
uuEJpp%
ZnY|{|e
[mZ|\{\{#
[mZ|||f
kkdr\{\{\%
lkdr\{\{&gt;</code></pre>
<pre><code> @|?|?z#
@|||?z&amp;
&gt;?Sedvf
??Tdeu#
&gt;&gt;Tdeui
??Tdmmf
??[[euf
?}?Oq}e
?}?Oqqf
v}?|q}e
v}?|qqf
?Sj|?{f
?Tjk?{e
FF?Oqq$
RR?Oqq$
^^?Oqq$
jj?Oqq$
vv?|qq$
IOBMqqe
U]BMqqe
aiBMqqe
muBMqqe
EEEJpp%
QQEJpp%
]]EJpp%
iiEJpp%
uuEJpp%
ZnY|{|e
[mZ|\{\{#
[mZ|||f
kkdr\{\{\%
lkdr\{\{&gt;</code></pre>
<h2 id="basic-structure">Basic structure</h2>
<p>A scene file begins with arbitrary binary data, followed by several shader
functions.</p>
@@ -164,33 +164,33 @@ functions.</p>
character. There are some special function names, which will be explained below.</p>
<p>The language used to write shader functions is very simple. Basically, you write
a sequence of assignment statements like this:</p>
<pre><code>A=A+D
B=B+E</code></pre>
<pre><code> A=A+D
B=B+E</code></pre>
<p>Namely, you write a one-character variable name, an equal sign (<code>=</code>), followed
by an expression (made of operators and one-character variable names, of
course).</p>
<h2 id="expressions">Expressions</h2>
<p>The shader language supports seven operators, listed highest priority first:</p>
<pre><code>*/+-&lt;#:</code></pre>
<pre><code> */+-&lt;#:</code></pre>
<p><code>*/+-&lt;</code> each mean what they mean in C, but the priority part is a bit different.
Basically, <code>*</code> has higher priority than <code>/</code>, so <code>A/4*4</code> actually computes
<code>A/(4*4)</code>. And you can’t write <code>(A/4)*4</code> – brackets are not supported. As an
advice, keep your expressions simple :) If you really needs to write something
like <code>C=(A/4)*4</code>, write instead:</p>
<pre><code>B=A/4+
C=B*4</code></pre>
<pre><code> B=A/4+
C=B*4</code></pre>
<p>The <code>#</code> operator acts somewhat like the C <code>?:</code>. It returns one of its two
operands based on, what else, the value of variable <code>#</code>. When <code>#</code> is true, <code>#</code>
returns its second operand.</p>
<p>The <code>:</code> operator calls built-in functions. The first operand is the function id and the second is the parameter. Here is a list of functions:</p>
<pre><code>0:x = the x-th byte of the scene file
1:x = sin(x*PI)
2:x = atan2(x,#)/PI
3:x = sqrt(max(x,0))
4:x = floor(x)
5:x = the next number in the (allegedly random) number sequence, can&#39;t be called in volume shaders
6:x = value of the variable (char)(120+x)
7:x = write #&#39;s value to the variable (char)(120+x)</code></pre>
<pre><code> 0:x = the x-th byte of the scene file
1:x = sin(x*PI)
2:x = atan2(x,#)/PI
3:x = sqrt(max(x,0))
4:x = floor(x)
5:x = the next number in the (allegedly random) number sequence, can&#39;t be called in volume shaders
6:x = value of the variable (char)(120+x)
7:x = write #&#39;s value to the variable (char)(120+x)</code></pre>
<p>Contrary to popular belief, the language itself doesn’t support numerical
constants. Any character sitting between operators is a variable. When you see
1/2, it’s in fact dividing the variable 1’s value by the variable 2’s value. For
@@ -208,7 +208,7 @@ the Windows <code>\r\n</code>), and it terminates your function. Also, the first
must begin immediately after <code>]</code>.</p>
<p>When a function terminates, the interpreter calls the next function specified by
variable <code>R</code>. If you want to call function <code>n</code>, just write somewhere:</p>
<pre><code>R=n</code></pre>
<pre><code> R=n</code></pre>
<p>providing you have left <code>n</code> at its initial value. If you want to actually return
to the renderer, put in <code>R=0</code>.</p>
<p>As you may have noticed, you can put in all kinds of stuff between functions,
@@ -224,28 +224,28 @@ material shaders.</p>
</tr>
</tbody>
</table>
<pre><code>//As an (optional) assignment, figure out what function &#39;n&#39; does. And why there is a plus sign at every EOL except the last.
n]#=1+
x=X+1/2+
d=0:U;d=d-n;U=U+1;A=d&lt;x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x&lt;d+1;#=#*A+
x=Y+1/2+
d=0:U;d=d-n;U=U+1;A=d&lt;x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x&lt;d+1;#=#*A+
x=Z+1/2+
d=0:U;d=d-n;U=U+1;A=d&lt;x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x&lt;d+1;#=#*A+
d=0:U;d=d-n;U=U+1+
U=U+2+
C=C#d+3*9+
#=d+
R=0#n</code></pre>
<pre><code> //As an (optional) assignment, figure out what function &#39;n&#39; does. And why there is a plus sign at every EOL except the last.
n]#=1+
x=X+1/2+
d=0:U;d=d-n;U=U+1;A=d&lt;x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x&lt;d+1;#=#*A+
x=Y+1/2+
d=0:U;d=d-n;U=U+1;A=d&lt;x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x&lt;d+1;#=#*A+
x=Z+1/2+
d=0:U;d=d-n;U=U+1;A=d&lt;x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x&lt;d+1;#=#*A+
d=0:U;d=d-n;U=U+1+
U=U+2+
C=C#d+3*9+
#=d+
R=0#n</code></pre>
<hr />
<p>The function <code>A</code> initializes global settings:</p>
<pre><code>G -- Image width, in pixels
H -- Image height, in pixels
I -- Perturbation probability
J -- Camera ray stratification probability</code></pre>
<pre><code> G -- Image width, in pixels
H -- Image height, in pixels
I -- Perturbation probability
J -- Camera ray stratification probability</code></pre>
<p>If you have used a MLT renderer before, you probably know what <code>I</code> and <code>J</code> does.
If you don’t, well, use the same value as the default scene. Everything
converges just fine under suboptimal settings, just a little slower. Generally,
@@ -280,17 +280,17 @@ the one facing my bed, to thank me for the effort.</p>
</tr>
</tbody>
</table>
<pre><code>//As a bonus, find out what the first line does
A]#=#-#;&quot;=7:0-p+^;#=&quot;+
R=n+
G=p*:+
#=0&lt;B+
G=G*2#G+
H=G*3/4+
I=4/5+
J=1/2+
C=p+1+
U=w+w+w</code></pre>
<pre><code> //As a bonus, find out what the first line does
A]#=#-#;&quot;=7:0-p+^;#=&quot;+
R=n+
G=p*:+
#=0&lt;B+
G=G*2#G+
H=G*3/4+
I=4/5+
J=1/2+
C=p+1+
U=w+w+w</code></pre>
<hr />
<p>The function <code>a</code> is the camera shader, which, well, generates the camera ray.
It’s supposed to return the ray in variables <code>UVWXYZ</code> and <code>ABCDEF</code> (that may
@@ -312,8 +312,8 @@ coordinate space, volume 0 is scaled up 64x here to <code>(0,0,0)-(4096,4096,409
happen. Wall up everything.</p>
<p>Variables <code>ABCDEF</code> control the color returned from the ray. They will be
explained in the material shaders part. For now, just put in:</p>
<pre><code>A=0;B=0;C=0
D=1;E=1;F=1</code></pre>
<pre><code> A=0;B=0;C=0
D=1;E=1;F=1</code></pre>
<table>
<tbody>
<tr class="odd">
@@ -321,29 +321,29 @@ D=1;E=1;F=1</code></pre>
</tr>
</tbody>
</table>
<pre><code>a]R=0+
X=5:5+
Y=5:5+
X=X-1/2+
Y=Y-1/2+
x=5:5+
y=5:5+
x=x-1/2+
y=y-1/2+
x=x*8*7;y=y*8*7+
X=X*G+
Y=Y*H+
Z=H*2/3+
d=4*;+
d=d*p/Z+
X=x+X*d+
Y=y+Y*d+
Z=Z*d+
U=p*p/2-p*2+x+
V=p*p/2+p*1-y+
W=p*8+
A=0;B=0;C=0+
D=1;E=1;F=1</code></pre>
<pre><code> a]R=0+
X=5:5+
Y=5:5+
X=X-1/2+
Y=Y-1/2+
x=5:5+
y=5:5+
x=x-1/2+
y=y-1/2+
x=x*8*7;y=y*8*7+
X=X*G+
Y=Y*H+
Z=H*2/3+
d=4*;+
d=d*p/Z+
X=x+X*d+
Y=y+Y*d+
Z=Z*d+
U=p*p/2-p*2+x+
V=p*p/2+p*1-y+
W=p*8+
A=0;B=0;C=0+
D=1;E=1;F=1</code></pre>
<hr />
<p>The numbered functions define materials, i.e., surface reflectance properties.
As the name suggests, the shader simulates ray-surface interaction. It’s done by
@@ -374,32 +374,32 @@ Function) importance sampling. Let’s continue to function <code>o</code>.</p>
</tr>
</tbody>
</table>
<pre><code>//This function computes the starred wallpaper
//Original color: 0.36 0.714285 0.8
1]R=o+
d=p*6+
x=U+W+
x=4:x/d+
z=4:V/d+
#=3*x-4*z+
y=4:#/5+
#=#-y*5+
y=1#0+
x=x*d+d/2-U+W+
z=z*d+d/2-V+
r=3:x*x+z*z+
#=z+
u=2:x+
d=1:u*5+
d=d*d*d+3/2+
d=d*p+
#=r&lt;d+
#=#*y+
d=2/5#I+
D=D*d+
E=E*4/7+
d=I#2/5+
F=F*d</code></pre>
<pre><code> //This function computes the starred wallpaper
//Original color: 0.36 0.714285 0.8
1]R=o+
d=p*6+
x=U+W+
x=4:x/d+
z=4:V/d+
#=3*x-4*z+
y=4:#/5+
#=#-y*5+
y=1#0+
x=x*d+d/2-U+W+
z=z*d+d/2-V+
r=3:x*x+z*z+
#=z+
u=2:x+
d=1:u*5+
d=d*d*d+3/2+
d=d*p+
#=r&lt;d+
#=#*y+
d=2/5#I+
D=D*d+
E=E*4/7+
d=I#2/5+
F=F*d</code></pre>
<hr />
<p>Function <code>o</code> defines a diffuse (that is, dull) surface. To define reflectance
properties like this, one needs to sample an outgoing ray direction, based on
@@ -415,9 +415,9 @@ defined as a bunch of cube-shaped cells, there are only 6 possible normals:
<code>(±1,0,0) (0,±1,0) (0,0,±1)</code>. Here <code>S</code> is the sign and <code>T</code> is the dimension. If
you get <code>S=-1</code> and <code>T=1</code>, the normal is <code>(0,-1,0)</code>.</p>
<p>If you don’t want to redo all the math yourself… this file provides a few simple shader functions:</p>
<pre><code>o -- Diffuse surface. Do the color thing your self and call R=o
5 -- Perfect mirror.
f -- Surface with a Fresnel term. Basically, it resembles a polished surface made from a dielectric material.</code></pre>
<pre><code> o -- Diffuse surface. Do the color thing your self and call R=o
5 -- Perfect mirror.
f -- Surface with a Fresnel term. Basically, it resembles a polished surface made from a dielectric material.</code></pre>
<p>For something more complex like a fluffy carpet, well, you could use a volume to
directly model the
<a href="https://en.wikipedia.org/wiki/Mesoscopic_physics">mesoscopic</a> detail. Shader
@@ -430,107 +430,107 @@ appearance.</p>
</tr>
</tbody>
</table>
<pre><code>//diffuse ray generation
o]R=0+
u=5:5+
v=5:5+
v=v*2+
r=3:u+
z=1:v+
y=1:1/2+v+
z=z*r+
y=y*r+
x=3:1-u+
x=0-x*S+
X=6:T+
w=x;x=z;z=y;y=w+
Y=6:T+
w=x;x=z;z=y;y=w+
Z=6:T
<pre><code> //diffuse ray generation
o]R=0+
u=5:5+
v=5:5+
v=v*2+
r=3:u+
z=1:v+
y=1:1/2+v+
z=z*r+
y=y*r+
x=3:1-u+
x=0-x*S+
X=6:T+
w=x;x=z;z=y;y=w+
Y=6:T+
w=x;x=z;z=y;y=w+
Z=6:T
//reflector
5]R=0+
x=1;y=1;z=1+
#=0-1+
#=7:T+
X=x*X;Y=y*Y;Z=z*Z
//reflector
5]R=0+
x=1;y=1;z=1+
#=0-1+
#=7:T+
X=x*X;Y=y*Y;Z=z*Z
//approximate Fresnel, works better than the real thing when you don&#39;t want to tweak the IOR
f]x=X;y=Y;z=Z+
r=3:x*x+z*z+y*y+
d=6:T+
d=1-d*S/r+
d=d*d*d+
#=5:5+
#=d&lt;#+
R=5#o+
d=d#1-d+
u=1#u+
v=1#v+
w=1#w+
D=D*d*u+
E=E*d*v+
F=F*d*w
//approximate Fresnel, works better than the real thing when you don&#39;t want to tweak the IOR
f]x=X;y=Y;z=Z+
r=3:x*x+z*z+y*y+
d=6:T+
d=1-d*S/r+
d=d*d*d+
#=5:5+
#=d&lt;#+
R=5#o+
d=d#1-d+
u=1#u+
v=1#v+
w=1#w+
D=D*d*u+
E=E*d*v+
F=F*d*w
//the handles
B]R=0+
#=X&lt;8*3+
C=3#0
//the handles
B]R=0+
#=X&lt;8*3+
C=3#0
C]R=0+
#=X&lt;8*4+
C=0#4
C]R=0+
#=X&lt;8*4+
C=0#4
//red-Fresnel
2]R=f+
u=1/2;v=1/9;w=v
//red-Fresnel
2]R=f+
u=1/2;v=1/9;w=v
//white-Fresnel and the full moon
3]R=f+
u=7*9/p;v=u;w=v+
x=3*:+8+
z=U-x*p+p/2+
x=V-x*p-p/2+
r=3:x*x+z*z+
#=4&lt;r/p+
D=D*I#D+
E=E*4/7#E+
F=F*2/5#F+
d=1/5#0+
A=A+D*d+
B=B+E*d+
C=C+F*d
//white-Fresnel and the full moon
3]R=f+
u=7*9/p;v=u;w=v+
x=3*:+8+
z=U-x*p+p/2+
x=V-x*p-p/2+
r=3:x*x+z*z+
#=4&lt;r/p+
D=D*I#D+
E=E*4/7#E+
F=F*2/5#F+
d=1/5#0+
A=A+D*d+
B=B+E*d+
C=C+F*d
//handle
4]R=5+
D=D*I;E=E*4/7;F=F*2/5
//handle
4]R=5+
D=D*I;E=E*4/7;F=F*2/5
//light from the window
6]R=0+
#=P+
d=2#8*2+
A=A+D*d+
B=B+E*d+
C=C+F*d*I+
P=9
//light from the window
6]R=0+
#=P+
d=2#8*2+
A=A+D*d+
B=B+E*d+
C=C+F*d*I+
P=9
//carpet
7]R=o+
D=D/7+
E=E/3+
F=F/7
//carpet
7]R=o+
D=D/7+
E=E/3+
F=F/7
D]R=0+
#=8&lt;Y+
C=0#3+
#=4:3*X-4*Z+
y=4:#/7+
#=#-y*7+
C=7#C</code></pre>
D]R=0+
#=8&lt;Y+
C=0#3+
#=4:3*X-4*Z+
y=4:#/7+
#=#-y*7+
C=7#C</code></pre>
<hr />
<p>The last line, well, is the output filename. Just remember to throw in two <code>]</code>s
and don’t put a newline after it.</p>
<pre><code>]]example.ppm</code></pre>
<pre><code> ]]example.ppm</code></pre>
<!--
Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
2013/hou/doc/example.md
+225 -226
View File
@@ -1,43 +1,42 @@

# Scene format documentation
# Scene format documentation
The file must be encoded in UTF-8 as the BOF marker indicates.
You can directly feed it to the renderer. If you're wondering about what the following code block does, that's why:)
```
@|?|?z#
@|||?z&
>?Sedvf
??Tdeu#
>>Tdeui
??Tdmmf
??[[euf
?}?Oq}e
?}?Oqqf
v}?|q}e
v}?|qqf
?Sj|?{f
?Tjk?{e
FF?Oqq$
RR?Oqq$
^^?Oqq$
jj?Oqq$
vv?|qq$
IOBMqqe
U]BMqqe
aiBMqqe
muBMqqe
EEEJpp%
QQEJpp%
]]EJpp%
iiEJpp%
uuEJpp%
ZnY|{|e
[mZ|\{\{#
[mZ|||f
kkdr\{\{\%
lkdr\{\{>
@|?|?z#
@|||?z&
>?Sedvf
??Tdeu#
>>Tdeui
??Tdmmf
??[[euf
?}?Oq}e
?}?Oqqf
v}?|q}e
v}?|qqf
?Sj|?{f
?Tjk?{e
FF?Oqq$
RR?Oqq$
^^?Oqq$
jj?Oqq$
vv?|qq$
IOBMqqe
U]BMqqe
aiBMqqe
muBMqqe
EEEJpp%
QQEJpp%
]]EJpp%
iiEJpp%
uuEJpp%
ZnY|{|e
[mZ|\{\{#
[mZ|||f
kkdr\{\{\%
lkdr\{\{>
```
@@ -53,8 +52,8 @@ The language used to write shader functions is very simple. Basically, you write
a sequence of assignment statements like this:
```
A=A+D
B=B+E
A=A+D
B=B+E
```
Namely, you write a one-character variable name, an equal sign (`=`), followed
@@ -67,7 +66,7 @@ course).
The shader language supports seven operators, listed highest priority first:
```
*/+-<#:
*/+-<#:
```
`*/+-<` each mean what they mean in C, but the priority part is a bit different.
@@ -77,8 +76,8 @@ advice, keep your expressions simple :) If you really needs to write something
like `C=(A/4)*4`, write instead:
```
B=A/4+
C=B*4
B=A/4+
C=B*4
```
The `#` operator acts somewhat like the C `?:`. It returns one of its two
@@ -88,14 +87,14 @@ returns its second operand.
The `:` operator calls built-in functions. The first operand is the function id and the second is the parameter. Here is a list of functions:
```
0:x = the x-th byte of the scene file
1:x = sin(x*PI)
2:x = atan2(x,#)/PI
3:x = sqrt(max(x,0))
4:x = floor(x)
5:x = the next number in the (allegedly random) number sequence, can't be called in volume shaders
6:x = value of the variable (char)(120+x)
7:x = write #'s value to the variable (char)(120+x)
0:x = the x-th byte of the scene file
1:x = sin(x*PI)
2:x = atan2(x,#)/PI
3:x = sqrt(max(x,0))
4:x = floor(x)
5:x = the next number in the (allegedly random) number sequence, can't be called in volume shaders
6:x = value of the variable (char)(120+x)
7:x = write #'s value to the variable (char)(120+x)
```
Contrary to popular belief, the language itself doesn't support numerical
@@ -120,14 +119,14 @@ When a function terminates, the interpreter calls the next function specified by
variable `R`. If you want to call function `n`, just write somewhere:
```
R=n
```
R=n
```
providing you have left `n` at its initial value. If you want to actually return
to the renderer, put in `R=0`.
providing you have left `n` at its initial value. If you want to actually return
to the renderer, put in `R=0`.
As you may have noticed, you can put in all kinds of stuff between functions,
like this comment.
As you may have noticed, you can put in all kinds of stuff between functions,
like this comment.
## How the ____ do I render an image with shaders?
@@ -143,22 +142,22 @@ Continue to the comments before function A
```
//As an (optional) assignment, figure out what function 'n' does. And why there is a plus sign at every EOL except the last.
n]#=1+
x=X+1/2+
d=0:U;d=d-n;U=U+1;A=d<x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x<d+1;#=#*A+
x=Y+1/2+
d=0:U;d=d-n;U=U+1;A=d<x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x<d+1;#=#*A+
x=Z+1/2+
d=0:U;d=d-n;U=U+1;A=d<x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x<d+1;#=#*A+
d=0:U;d=d-n;U=U+1+
U=U+2+
C=C#d+3*9+
#=d+
R=0#n
//As an (optional) assignment, figure out what function 'n' does. And why there is a plus sign at every EOL except the last.
n]#=1+
x=X+1/2+
d=0:U;d=d-n;U=U+1;A=d<x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x<d+1;#=#*A+
x=Y+1/2+
d=0:U;d=d-n;U=U+1;A=d<x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x<d+1;#=#*A+
x=Z+1/2+
d=0:U;d=d-n;U=U+1;A=d<x;#=#*A+
d=0:U;d=d-n;U=U+1;A=x<d+1;#=#*A+
d=0:U;d=d-n;U=U+1+
U=U+2+
C=C#d+3*9+
#=d+
R=0#n
```
-------------------------------------------
@@ -166,10 +165,10 @@ R=0#n
The function `A` initializes global settings:
```
G -- Image width, in pixels
H -- Image height, in pixels
I -- Perturbation probability
J -- Camera ray stratification probability
G -- Image width, in pixels
H -- Image height, in pixels
I -- Perturbation probability
J -- Camera ray stratification probability
```
If you have used a MLT renderer before, you probably know what `I` and `J` does.
@@ -210,17 +209,17 @@ Continue to the comments before function a
-------------------------------------------
```
//As a bonus, find out what the first line does
A]#=#-#;"=7:0-p+^;#="+
R=n+
G=p*:+
#=0<B+
G=G*2#G+
H=G*3/4+
I=4/5+
J=1/2+
C=p+1+
U=w+w+w
//As a bonus, find out what the first line does
A]#=#-#;"=7:0-p+^;#="+
R=n+
G=p*:+
#=0<B+
G=G*2#G+
H=G*3/4+
I=4/5+
J=1/2+
C=p+1+
U=w+w+w
```
@@ -253,8 +252,8 @@ Variables `ABCDEF` control the color returned from the ray. They will be
explained in the material shaders part. For now, just put in:
```
A=0;B=0;C=0
D=1;E=1;F=1
A=0;B=0;C=0
D=1;E=1;F=1
```
-------------------------------------------
@@ -262,29 +261,29 @@ Continue to the comments before function 1
-------------------------------------------
```
a]R=0+
X=5:5+
Y=5:5+
X=X-1/2+
Y=Y-1/2+
x=5:5+
y=5:5+
x=x-1/2+
y=y-1/2+
x=x*8*7;y=y*8*7+
X=X*G+
Y=Y*H+
Z=H*2/3+
d=4*;+
d=d*p/Z+
X=x+X*d+
Y=y+Y*d+
Z=Z*d+
U=p*p/2-p*2+x+
V=p*p/2+p*1-y+
W=p*8+
A=0;B=0;C=0+
D=1;E=1;F=1
a]R=0+
X=5:5+
Y=5:5+
X=X-1/2+
Y=Y-1/2+
x=5:5+
y=5:5+
x=x-1/2+
y=y-1/2+
x=x*8*7;y=y*8*7+
X=X*G+
Y=Y*H+
Z=H*2/3+
d=4*;+
d=d*p/Z+
X=x+X*d+
Y=y+Y*d+
Z=Z*d+
U=p*p/2-p*2+x+
V=p*p/2+p*1-y+
W=p*8+
A=0;B=0;C=0+
D=1;E=1;F=1
```
@@ -324,32 +323,32 @@ Continue to the comments before function o
-------------------------------------------
```
//This function computes the starred wallpaper
//Original color: 0.36 0.714285 0.8
1]R=o+
d=p*6+
x=U+W+
x=4:x/d+
z=4:V/d+
#=3*x-4*z+
y=4:#/5+
#=#-y*5+
y=1#0+
x=x*d+d/2-U+W+
z=z*d+d/2-V+
r=3:x*x+z*z+
#=z+
u=2:x+
d=1:u*5+
d=d*d*d+3/2+
d=d*p+
#=r<d+
#=#*y+
d=2/5#I+
D=D*d+
E=E*4/7+
d=I#2/5+
F=F*d
//This function computes the starred wallpaper
//Original color: 0.36 0.714285 0.8
1]R=o+
d=p*6+
x=U+W+
x=4:x/d+
z=4:V/d+
#=3*x-4*z+
y=4:#/5+
#=#-y*5+
y=1#0+
x=x*d+d/2-U+W+
z=z*d+d/2-V+
r=3:x*x+z*z+
#=z+
u=2:x+
d=1:u*5+
d=d*d*d+3/2+
d=d*p+
#=r<d+
#=#*y+
d=2/5#I+
D=D*d+
E=E*4/7+
d=I#2/5+
F=F*d
```
-------------------------------------------
@@ -373,9 +372,9 @@ you get `S=-1` and `T=1`, the normal is `(0,-1,0)`.
If you don't want to redo all the math yourself... this file provides a few simple shader functions:
```
o -- Diffuse surface. Do the color thing your self and call R=o
5 -- Perfect mirror.
f -- Surface with a Fresnel term. Basically, it resembles a polished surface made from a dielectric material.
o -- Diffuse surface. Do the color thing your self and call R=o
5 -- Perfect mirror.
f -- Surface with a Fresnel term. Basically, it resembles a polished surface made from a dielectric material.
```
For something more complex like a fluffy carpet, well, you could use a volume to
@@ -391,103 +390,103 @@ Continue to the EOF
-------------------------------------------
```
//diffuse ray generation
o]R=0+
u=5:5+
v=5:5+
v=v*2+
r=3:u+
z=1:v+
y=1:1/2+v+
z=z*r+
y=y*r+
x=3:1-u+
x=0-x*S+
X=6:T+
w=x;x=z;z=y;y=w+
Y=6:T+
w=x;x=z;z=y;y=w+
Z=6:T
//diffuse ray generation
o]R=0+
u=5:5+
v=5:5+
v=v*2+
r=3:u+
z=1:v+
y=1:1/2+v+
z=z*r+
y=y*r+
x=3:1-u+
x=0-x*S+
X=6:T+
w=x;x=z;z=y;y=w+
Y=6:T+
w=x;x=z;z=y;y=w+
Z=6:T
//reflector
5]R=0+
x=1;y=1;z=1+
#=0-1+
#=7:T+
X=x*X;Y=y*Y;Z=z*Z
//reflector
5]R=0+
x=1;y=1;z=1+
#=0-1+
#=7:T+
X=x*X;Y=y*Y;Z=z*Z
//approximate Fresnel, works better than the real thing when you don't want to tweak the IOR
f]x=X;y=Y;z=Z+
r=3:x*x+z*z+y*y+
d=6:T+
d=1-d*S/r+
d=d*d*d+
#=5:5+
#=d<#+
R=5#o+
d=d#1-d+
u=1#u+
v=1#v+
w=1#w+
D=D*d*u+
E=E*d*v+
F=F*d*w
//approximate Fresnel, works better than the real thing when you don't want to tweak the IOR
f]x=X;y=Y;z=Z+
r=3:x*x+z*z+y*y+
d=6:T+
d=1-d*S/r+
d=d*d*d+
#=5:5+
#=d<#+
R=5#o+
d=d#1-d+
u=1#u+
v=1#v+
w=1#w+
D=D*d*u+
E=E*d*v+
F=F*d*w
//the handles
B]R=0+
#=X<8*3+
C=3#0
//the handles
B]R=0+
#=X<8*3+
C=3#0
C]R=0+
#=X<8*4+
C=0#4
C]R=0+
#=X<8*4+
C=0#4
//red-Fresnel
2]R=f+
u=1/2;v=1/9;w=v
//red-Fresnel
2]R=f+
u=1/2;v=1/9;w=v
//white-Fresnel and the full moon
3]R=f+
u=7*9/p;v=u;w=v+
x=3*:+8+
z=U-x*p+p/2+
x=V-x*p-p/2+
r=3:x*x+z*z+
#=4<r/p+
D=D*I#D+
E=E*4/7#E+
F=F*2/5#F+
d=1/5#0+
A=A+D*d+
B=B+E*d+
C=C+F*d
//white-Fresnel and the full moon
3]R=f+
u=7*9/p;v=u;w=v+
x=3*:+8+
z=U-x*p+p/2+
x=V-x*p-p/2+
r=3:x*x+z*z+
#=4<r/p+
D=D*I#D+
E=E*4/7#E+
F=F*2/5#F+
d=1/5#0+
A=A+D*d+
B=B+E*d+
C=C+F*d
//handle
4]R=5+
D=D*I;E=E*4/7;F=F*2/5
//handle
4]R=5+
D=D*I;E=E*4/7;F=F*2/5
//light from the window
6]R=0+
#=P+
d=2#8*2+
A=A+D*d+
B=B+E*d+
C=C+F*d*I+
P=9
//light from the window
6]R=0+
#=P+
d=2#8*2+
A=A+D*d+
B=B+E*d+
C=C+F*d*I+
P=9
//carpet
7]R=o+
D=D/7+
E=E/3+
F=F/7
//carpet
7]R=o+
D=D/7+
E=E/3+
F=F/7
D]R=0+
#=8<Y+
C=0#3+
#=4:3*X-4*Z+
y=4:#/7+
#=#-y*7+
C=7#C
D]R=0+
#=8<Y+
C=0#3+
#=4:3*X-4*Z+
y=4:#/7+
#=#-y*7+
C=7#C
```
-------------------------------------------
@@ -496,7 +495,7 @@ The last line, well, is the output filename. Just remember to throw in two `]`s
and don't put a newline after it.
```
]]example.ppm
]]example.ppm
```
2013/hou/index.html
+13 -14
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Qiming_HOU">Qiming HOU</a><br>
Location: <a href="../../location.html#CN">CN</a> - <em>People’s Republic of China</em> (<em>China</em>)
<br><br></li>
Location: <a href="../../location.html#CN">CN</a> - <em>People’s Republic of China</em> (<em>China</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,18 +141,18 @@ Location: <a href="../../location.html#CN">CN</a> - <em>People’s Republic of C
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> all</span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
<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>
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
<p>For more detailed information see <a href="../../bugs.html#2013_hou">2013 hou bugs</a>.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./hou</span> <span class="pp">[</span><span class="ss">scene</span><span class="pp">-</span><span class="ss">file</span><span class="pp">-</span><span class="ss">name</span><span class="pp">]</span> <span class="pp">[</span><span class="ss">options</span><span class="pp">]</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./hou</span> <span class="pp">[</span><span class="ss">scene</span><span class="pp">-</span><span class="ss">file</span><span class="pp">-</span><span class="ss">name</span><span class="pp">]</span> <span class="pp">[</span><span class="ss">options</span><span class="pp">]</span></span></code></pre></div>
<p>Follow the instructions in <code>stdout</code>, preferably with an auto-refreshing PPM
image viewer ready. Refresh the image every time the output refreshes, all
effects should be more or less recognizable when you see 16.</p>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<p>Try opening the file noted by the program then let the program run a while and
every so often reopen the file, to see how it changes. The author suggests that
you leave the program running overnight to see what happens. If however you do
@@ -182,15 +181,15 @@ program.</p>
<a href="https://en.wikipedia.org/wiki/Ray_tracing_(graphics)">raytraced</a> image.</p>
<p>NOTE: the author refers to <a href="a.c">a.c</a>, placed in a gzipped file <code>a.c.gz</code>. We do not
include it but it can be generated like:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> <span class="at">-Wall</span> hou.c <span class="at">-o</span> hou <span class="at">-lm</span></span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./hou</span> <span class="op">&gt;</span> a.c</span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> <span class="at">-Wall</span> hou.c <span class="at">-o</span> hou <span class="at">-lm</span></span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./hou</span> <span class="op">&gt;</span> a.c</span></code></pre></div>
<p>but there is no need to do this as the Makefile takes care of it without even
needing to create a temporary file.</p>
<h2 id="authors-remarks">Author’s remarks:</h2>
<h3 id="using-hou">Using hou</h3>
<p>This program is a programmable rendering engine with a built-in default scene.
The standard command line is:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./hou</span> <span class="pp">[</span><span class="ss">scene</span><span class="pp">-</span><span class="ss">file</span><span class="pp">-</span><span class="ss">name</span><span class="pp">]</span> <span class="pp">[</span><span class="ss">options</span><span class="pp">]</span></span></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./hou</span> <span class="pp">[</span><span class="ss">scene</span><span class="pp">-</span><span class="ss">file</span><span class="pp">-</span><span class="ss">name</span><span class="pp">]</span> <span class="pp">[</span><span class="ss">options</span><span class="pp">]</span></span></code></pre></div>
<p>As <code>hou</code> runs, it writes a progressively refining image to a ppm file specified
in the scene. The initialization may take a while, but once it’s done, a rough
preview should be available in seconds. Leave <code>hou</code> running for the night, and you
@@ -280,11 +279,11 @@ quite memory consuming, requires IEEE754-compliant <code>double</code>, and assu
doesn’t copy saved sessions across different endianness.</li>
</ul>
<h3 id="spoiler">Spoiler</h3>
<pre><code> 3225 3225 3225 9 9 3225 3225
1 1 1 1 1 1 1 1 1 1
4225 1226 1 1 1 1 1222 1226
1 1 1 1 1 1 1 1 1
4226 1 4226 8 4222 4226 1 1</code></pre>
<pre><code> 3225 3225 3225 9 9 3225 3225
1 1 1 1 1 1 1 1 1 1
4225 1226 1 1 1 1 1222 1226
1 1 1 1 1 1 1 1 1
4226 1 4226 8 4222 4226 1 1</code></pre>
<p>The program consists of a recursive-descent interpreter, a <code>3DDDA</code> (3D Discrete
Differential Analysis) ray tracer, a <code>PSSMLT</code> (Primary Sample Space Metropolis
Light Transport) light path sampler, all squeezed into the size limit using a
2013/index.html
+3 -3
View File
@@ -160,9 +160,9 @@ certain comments such as:</p>
<div class="sourceCode" id="cb2"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="op">*</span>\</span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="op">/</span></span></code></pre></div>
<p>were not correctly parsed by the tool. The guidelines stated:</p>
<pre><code>In cases where the above summary and the algorithm implemented by
the IOCCC size tool source code conflict, the algorithm implemented
by the IOCCC size tool source code is preferred by the judges.</code></pre>
<pre><code> In cases where the above summary and the algorithm implemented by
the IOCCC size tool source code conflict, the algorithm implemented
by the IOCCC size tool source code is preferred by the judges.</code></pre>
<p>so this abuse was allowed (and encouraged). The judges hope that
the IOCCC size tool author will patch the tool to block this kind
of size abuse in future contests.</p>
2013/mills/README.md
+5 -5
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
@@ -10,7 +10,7 @@ make
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2013 mills bugs](../../bugs.html#2013_mills).
@@ -19,14 +19,14 @@ For more detailed information see [2013 mills bugs](../../bugs.html#2013_mills).
## To use:
```sh
./mills
./mills
```
## Try:
```sh
./mills &
./mills &
```
While that is running, point your favorite browser at:
@@ -62,7 +62,7 @@ while you are there, click on an ad. They could use the money.
It would be possible to fix this by adding
```c
n=1,setsockopt(s,SOL_SOCKET,SO_REUSEADDR,&n,sizeof n),
n=1,setsockopt(s,SOL_SOCKET,SO_REUSEADDR,&n,sizeof n),
```
at an appropriate spot in the code (an exercise left to the reader). However,
2013/mills/index.html
+6 -7
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Christopher_Mills">Christopher Mills</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
<br><br></li>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,15 +141,15 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<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>
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
<p>For more detailed information see <a href="../../bugs.html#2013_mills">2013 mills bugs</a>.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./mills</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./mills</span></span></code></pre></div>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./mills</span> <span class="kw">&amp;</span></span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./mills</span> <span class="kw">&amp;</span></span></code></pre></div>
<p>While that is running, point your favorite browser at:
<a href="http://localhost:8224">http://localhost:8224</a>.</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
@@ -171,7 +170,7 @@ doing so. For details as to why this is necessary, feel free to Google
<code>"TIME_WAIT"</code>, <code>"SO_REUSEADDR"</code> and <code>"SO_REUSEPORT"</code> (with the quotes). And
while you are there, click on an ad. They could use the money.</p>
<p>It would be possible to fix this by adding</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a>n<span class="op">=</span><span class="dv">1</span><span class="op">,</span>setsockopt<span class="op">(</span>s<span class="op">,</span>SOL_SOCKET<span class="op">,</span>SO_REUSEADDR<span class="op">,&amp;</span>n<span class="op">,</span><span class="kw">sizeof</span> n<span class="op">),</span></span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> n<span class="op">=</span><span class="dv">1</span><span class="op">,</span>setsockopt<span class="op">(</span>s<span class="op">,</span>SOL_SOCKET<span class="op">,</span>SO_REUSEADDR<span class="op">,&amp;</span>n<span class="op">,</span><span class="kw">sizeof</span> n<span class="op">),</span></span></code></pre></div>
<p>at an appropriate spot in the code (an exercise left to the reader). However,
as this limitation is documented, it is not technically a bug.</p>
<h3 id="details-of-operation">Details of Operation</h3>
2013/misaka/README.md
+36 -36
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
This will build a bunch of versions of the code. See the author's details for
@@ -11,8 +11,8 @@ information on all of these builds.
## To use:
```sh
./horizontal_cat [files...] > [output]
./vertical_cat [files...] > [output]
./horizontal_cat [files...] > [output]
./vertical_cat [files...] > [output]
```
@@ -21,19 +21,19 @@ information on all of these builds.
To understand the various intermediate source files that are built, try:
```sh
make understanding
make understanding
```
Also try:
```sh
./try.sh
./try.sh
```
NOTE: Use - for standard input. For example:
```sh
./vertical_cat - -
./vertical_cat - -
```
@@ -70,12 +70,12 @@ judging this entry.
operation:
```sh
cc misaka.c -o horizontal_cat
./horizontal_cat [files...] > [output]
cc misaka.c -o horizontal_cat
./horizontal_cat [files...] > [output]
./horizontal_cat misaka.c misaka.c > misaka2.c
cc misaka2.c -o vertical_cat
./vertical_cat [files...] > [output]
./horizontal_cat misaka.c misaka.c > misaka2.c
cc misaka2.c -o vertical_cat
./vertical_cat [files...] > [output]
```
Where `[files...]` is a list of text file names. Use `-` to read from `stdin`.
@@ -95,8 +95,8 @@ I thought the lack of horizontal concatenation must have been an oversight,
so I implemented this utility:
```sh
cc misaka.c -o horizontal_cat
./horizontal_cat files...
cc misaka.c -o horizontal_cat
./horizontal_cat files...
```
`horizontal_cat` concatenates files horizontally and write the output to
@@ -110,7 +110,7 @@ example, if you have `seq(1)` in your shell, you can add line numbers to both
sides of [misaka.c](misaka.c) like this:
```sh
seq -f ' %.0f ' 45 | ./horizontal_cat - misaka.c -
seq -f ' %.0f ' 45 | ./horizontal_cat - misaka.c -
```
@@ -127,16 +127,16 @@ mode with command line options would be no fun. Instead, vertical mode is
enabled by concatenating the source code horizontally:
```sh
./horizontal_cat misaka.c misaka.c > misaka2.c
gcc misaka2.c -o vertical_cat
./vertical_cat files...
./horizontal_cat misaka.c misaka.c > misaka2.c
gcc misaka2.c -o vertical_cat
./vertical_cat files...
```
`vertical_cat` works more or less like `cat`, except you can use
`vertical_cat` to duplicate `stdin`:
```sh
./vertical_cat - -
./vertical_cat - -
```
@@ -148,9 +148,9 @@ one more mode, this one is enabled by concatenating [misaka.c](misaka.c)
vertically:
```sh
./vertical_cat misaka.c misaka.c > misaka3.c
gcc misaka3.c -o long_cat
./long_cat
./vertical_cat misaka.c misaka.c > misaka3.c
gcc misaka3.c -o long_cat
./long_cat
```
`long_cat` outputs ASCII art of a cat to `stdout`. You can make this cat
@@ -158,33 +158,33 @@ exponentially longer by concatenating more files vertically (up to 31 levels
high, depending on `sizeof(int)` for your compiler):
```sh
./vertical_cat misaka.c misaka.c misaka.c > misaka4.c
gcc misaka4.c -o loong_cat
./vertical_cat misaka.c misaka.c misaka.c > misaka4.c
gcc misaka4.c -o loong_cat
./vertical_cat misaka.c misaka.c misaka.c misaka.c > misaka5.c
gcc misaka5.c -o loooong_cat
./vertical_cat misaka.c misaka.c misaka.c misaka.c > misaka5.c
gcc misaka5.c -o loooong_cat
./vertical_cat misaka.c misaka.c misaka.c misaka.c misaka.c > misaka6.c
gcc misaka6.c -o loooooooong_cat
./vertical_cat misaka.c misaka.c misaka.c misaka.c misaka.c > misaka6.c
gcc misaka6.c -o loooooooong_cat
```
If your terminal has really thin fonts, you can also make this output fatter
by concatenating files horizontally:
```sh
./vertical_cat misaka.c misaka.c | ./horizontal_cat - - > misaka7.c
gcc misaka7.c -o long_fat_cat
./vertical_cat misaka.c misaka.c | ./horizontal_cat - - > misaka7.c
gcc misaka7.c -o long_fat_cat
./vertical_cat misaka.c misaka.c | ./horizontal_cat - - - > misaka8.c
gcc misaka8.c -o long_faat_cat
./vertical_cat misaka.c misaka.c | ./horizontal_cat - - - > misaka8.c
gcc misaka8.c -o long_faat_cat
```
Output width is determined by the first level of stacked programs, so a
triangle like the following will not have horizontally expanded output:
```sh
./horizontal_cat misaka.c misaka.c | ./vertical_cat misaka.c - > misaka9.c
gcc misaka9.c -o same_as_long_cat
./horizontal_cat misaka.c misaka.c | ./vertical_cat misaka.c - > misaka9.c
gcc misaka9.c -o same_as_long_cat
```
Finally, if you lost track of how many [misaka.c](misaka.c) you have stacked
@@ -193,14 +193,14 @@ together, you can feed the source to a
overview of how the programs are stacked. Example:
```sh
perl bf.pl misaka9.c
perl bf.pl misaka9.c
```
This outputs:
```
MISAKA
MISAKA MISAKA
MISAKA
MISAKA MISAKA
```
2013/misaka/index.html
+37 -38
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Don_Yang">Don Yang</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
<br><br></li>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,19 +141,19 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<p>This will build a bunch of versions of the code. See the author’s details for
information on all of these builds.</p>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./horizontal_cat</span> <span class="pp">[</span><span class="ss">files...</span><span class="pp">]</span> <span class="op">&gt;</span> <span class="pp">[</span><span class="ss">output</span><span class="pp">]</span></span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> <span class="pp">[</span><span class="ss">files...</span><span class="pp">]</span> <span class="op">&gt;</span> <span class="pp">[</span><span class="ss">output</span><span class="pp">]</span></span></code></pre></div>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./horizontal_cat</span> <span class="pp">[</span><span class="ss">files...</span><span class="pp">]</span> <span class="op">&gt;</span> <span class="pp">[</span><span class="ss">output</span><span class="pp">]</span></span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> <span class="pp">[</span><span class="ss">files...</span><span class="pp">]</span> <span class="op">&gt;</span> <span class="pp">[</span><span class="ss">output</span><span class="pp">]</span></span></code></pre></div>
<h2 id="try">Try:</h2>
<p>To understand the various intermediate source files that are built, try:</p>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> understanding</span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> understanding</span></code></pre></div>
<p>Also try:</p>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<p>NOTE: Use - for standard input. For example:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> <span class="at">-</span> <span class="at">-</span></span></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> <span class="at">-</span> <span class="at">-</span></span></code></pre></div>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>There is more to cat than <a href="http://cheezburger.com/1680494336">mere cats</a>. Be
they tall, fat, long or squat, this source code is sure to amuse.</p>
@@ -177,12 +176,12 @@ judging this entry.</p>
<h3 id="overview">Overview</h3>
<p><code>Misaka</code> is a file concatenation utility, with at least two modes of
operation:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> misaka.c <span class="at">-o</span> horizontal_cat</span>
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./horizontal_cat</span> <span class="pp">[</span><span class="ss">files...</span><span class="pp">]</span> <span class="op">&gt;</span> <span class="pp">[</span><span class="ss">output</span><span class="pp">]</span></span>
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> misaka.c <span class="at">-o</span> horizontal_cat</span>
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./horizontal_cat</span> <span class="pp">[</span><span class="ss">files...</span><span class="pp">]</span> <span class="op">&gt;</span> <span class="pp">[</span><span class="ss">output</span><span class="pp">]</span></span>
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a><span class="ex">./horizontal_cat</span> misaka.c misaka.c <span class="op">&gt;</span> misaka2.c</span>
<span id="cb6-5"><a href="#cb6-5" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> misaka2.c <span class="at">-o</span> vertical_cat</span>
<span id="cb6-6"><a href="#cb6-6" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> <span class="pp">[</span><span class="ss">files...</span><span class="pp">]</span> <span class="op">&gt;</span> <span class="pp">[</span><span class="ss">output</span><span class="pp">]</span></span></code></pre></div>
<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./horizontal_cat</span> misaka.c misaka.c <span class="op">&gt;</span> misaka2.c</span>
<span id="cb6-5"><a href="#cb6-5" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> misaka2.c <span class="at">-o</span> vertical_cat</span>
<span id="cb6-6"><a href="#cb6-6" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> <span class="pp">[</span><span class="ss">files...</span><span class="pp">]</span> <span class="op">&gt;</span> <span class="pp">[</span><span class="ss">output</span><span class="pp">]</span></span></code></pre></div>
<p>Where <code>[files...]</code> is a list of text file names. Use <code>-</code> to read from <code>stdin</code>.</p>
<h3 id="details">Details</h3>
<h3 id="horizontal-cat">Horizontal cat</h3>
@@ -193,8 +192,8 @@ concatenating files, that function only seem to work if I wanted to concatenate
files vertically.</p>
<p>I thought the lack of horizontal concatenation must have been an oversight,
so I implemented this utility:</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> misaka.c <span class="at">-o</span> horizontal_cat</span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./horizontal_cat</span> files...</span></code></pre></div>
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> misaka.c <span class="at">-o</span> horizontal_cat</span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./horizontal_cat</span> files...</span></code></pre></div>
<p><code>horizontal_cat</code> concatenates files horizontally and write the output to
<code>stdout</code>. Each input file is padded with spaces on the right so that the
original text alignments are preserved.</p>
@@ -203,7 +202,7 @@ Unlike <code>cat</code>, <code>horizontal_cat</code> loads all input to memory f
can specify <code>-</code> multiple times to get <code>stdin</code> multiplied horizontally. For
example, if you have <code>seq(1)</code> in your shell, you can add line numbers to both
sides of <a href="misaka.c">misaka.c</a> like this:</p>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="fu">seq</span> <span class="at">-f</span> <span class="st">&#39; %.0f &#39;</span> 45 <span class="kw">|</span> <span class="ex">./horizontal_cat</span> <span class="at">-</span> misaka.c <span class="at">-</span></span></code></pre></div>
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">seq</span> <span class="at">-f</span> <span class="st">&#39; %.0f &#39;</span> 45 <span class="kw">|</span> <span class="ex">./horizontal_cat</span> <span class="at">-</span> misaka.c <span class="at">-</span></span></code></pre></div>
<h3 id="vertical-cat">Vertical cat</h3>
<p>Because <code>horizontal_cat</code> must know the maximum width of all files before
writing any output, all files must be processed at least twice. To support
@@ -213,50 +212,50 @@ writing any output, all files must be processed at least twice. To support
files vertically, so I included a vertical mode. But supporting vertical
mode with command line options would be no fun. Instead, vertical mode is
enabled by concatenating the source code horizontally:</p>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./horizontal_cat</span> misaka.c misaka.c <span class="op">&gt;</span> misaka2.c</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> misaka2.c <span class="at">-o</span> vertical_cat</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> files...</span></code></pre></div>
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./horizontal_cat</span> misaka.c misaka.c <span class="op">&gt;</span> misaka2.c</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> misaka2.c <span class="at">-o</span> vertical_cat</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> files...</span></code></pre></div>
<p><code>vertical_cat</code> works more or less like <code>cat</code>, except you can use
<code>vertical_cat</code> to duplicate <code>stdin</code>:</p>
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> <span class="at">-</span> <span class="at">-</span></span></code></pre></div>
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> <span class="at">-</span> <span class="at">-</span></span></code></pre></div>
<h3 id="long-cat">Long cat</h3>
<p>After <code>horizontal_cat</code> and <code>vertical_cat</code>, I thought, maybe all I really wanted
was just more <a href="https://rationalwiki.org/wiki/Fun:Cat">cats</a>. So I implemented
one more mode, this one is enabled by concatenating <a href="misaka.c">misaka.c</a>
vertically:</p>
<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> misaka.c misaka.c <span class="op">&gt;</span> misaka3.c</span>
<span id="cb11-2"><a href="#cb11-2" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> misaka3.c <span class="at">-o</span> long_cat</span>
<span id="cb11-3"><a href="#cb11-3" aria-hidden="true" tabindex="-1"></a><span class="ex">./long_cat</span></span></code></pre></div>
<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> misaka.c misaka.c <span class="op">&gt;</span> misaka3.c</span>
<span id="cb11-2"><a href="#cb11-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> misaka3.c <span class="at">-o</span> long_cat</span>
<span id="cb11-3"><a href="#cb11-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./long_cat</span></span></code></pre></div>
<p><code>long_cat</code> outputs ASCII art of a cat to <code>stdout</code>. You can make this cat
exponentially longer by concatenating more files vertically (up to 31 levels
high, depending on <code>sizeof(int)</code> for your compiler):</p>
<div class="sourceCode" id="cb12"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> misaka.c misaka.c misaka.c <span class="op">&gt;</span> misaka4.c</span>
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> misaka4.c <span class="at">-o</span> loong_cat</span>
<div class="sourceCode" id="cb12"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> misaka.c misaka.c misaka.c <span class="op">&gt;</span> misaka4.c</span>
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> misaka4.c <span class="at">-o</span> loong_cat</span>
<span id="cb12-3"><a href="#cb12-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> misaka.c misaka.c misaka.c misaka.c <span class="op">&gt;</span> misaka5.c</span>
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> misaka5.c <span class="at">-o</span> loooong_cat</span>
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> misaka.c misaka.c misaka.c misaka.c <span class="op">&gt;</span> misaka5.c</span>
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> misaka5.c <span class="at">-o</span> loooong_cat</span>
<span id="cb12-6"><a href="#cb12-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb12-7"><a href="#cb12-7" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> misaka.c misaka.c misaka.c misaka.c misaka.c <span class="op">&gt;</span> misaka6.c</span>
<span id="cb12-8"><a href="#cb12-8" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> misaka6.c <span class="at">-o</span> loooooooong_cat</span></code></pre></div>
<span id="cb12-7"><a href="#cb12-7" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> misaka.c misaka.c misaka.c misaka.c misaka.c <span class="op">&gt;</span> misaka6.c</span>
<span id="cb12-8"><a href="#cb12-8" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> misaka6.c <span class="at">-o</span> loooooooong_cat</span></code></pre></div>
<p>If your terminal has really thin fonts, you can also make this output fatter
by concatenating files horizontally:</p>
<div class="sourceCode" id="cb13"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> misaka.c misaka.c <span class="kw">|</span> <span class="ex">./horizontal_cat</span> <span class="at">-</span> <span class="at">-</span> <span class="op">&gt;</span> misaka7.c</span>
<span id="cb13-2"><a href="#cb13-2" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> misaka7.c <span class="at">-o</span> long_fat_cat</span>
<div class="sourceCode" id="cb13"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> misaka.c misaka.c <span class="kw">|</span> <span class="ex">./horizontal_cat</span> <span class="at">-</span> <span class="at">-</span> <span class="op">&gt;</span> misaka7.c</span>
<span id="cb13-2"><a href="#cb13-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> misaka7.c <span class="at">-o</span> long_fat_cat</span>
<span id="cb13-3"><a href="#cb13-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb13-4"><a href="#cb13-4" aria-hidden="true" tabindex="-1"></a><span class="ex">./vertical_cat</span> misaka.c misaka.c <span class="kw">|</span> <span class="ex">./horizontal_cat</span> <span class="at">-</span> <span class="at">-</span> <span class="at">-</span> <span class="op">&gt;</span> misaka8.c</span>
<span id="cb13-5"><a href="#cb13-5" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> misaka8.c <span class="at">-o</span> long_faat_cat</span></code></pre></div>
<span id="cb13-4"><a href="#cb13-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./vertical_cat</span> misaka.c misaka.c <span class="kw">|</span> <span class="ex">./horizontal_cat</span> <span class="at">-</span> <span class="at">-</span> <span class="at">-</span> <span class="op">&gt;</span> misaka8.c</span>
<span id="cb13-5"><a href="#cb13-5" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> misaka8.c <span class="at">-o</span> long_faat_cat</span></code></pre></div>
<p>Output width is determined by the first level of stacked programs, so a
triangle like the following will not have horizontally expanded output:</p>
<div class="sourceCode" id="cb14"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./horizontal_cat</span> misaka.c misaka.c <span class="kw">|</span> <span class="ex">./vertical_cat</span> misaka.c <span class="at">-</span> <span class="op">&gt;</span> misaka9.c</span>
<span id="cb14-2"><a href="#cb14-2" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> misaka9.c <span class="at">-o</span> same_as_long_cat</span></code></pre></div>
<div class="sourceCode" id="cb14"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./horizontal_cat</span> misaka.c misaka.c <span class="kw">|</span> <span class="ex">./vertical_cat</span> misaka.c <span class="at">-</span> <span class="op">&gt;</span> misaka9.c</span>
<span id="cb14-2"><a href="#cb14-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">gcc</span> misaka9.c <span class="at">-o</span> same_as_long_cat</span></code></pre></div>
<p>Finally, if you lost track of how many <a href="misaka.c">misaka.c</a> you have stacked
together, you can feed the source to a
<a href="https://en.wikipedia.org/wiki/Brainfuck">brainfuck</a> interpreter to get an
overview of how the programs are stacked. Example:</p>
<div class="sourceCode" id="cb15"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb15-1"><a href="#cb15-1" aria-hidden="true" tabindex="-1"></a><span class="fu">perl</span> bf.pl misaka9.c</span></code></pre></div>
<div class="sourceCode" id="cb15"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb15-1"><a href="#cb15-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">perl</span> bf.pl misaka9.c</span></code></pre></div>
<p>This outputs:</p>
<pre><code>MISAKA
MISAKA MISAKA</code></pre>
<pre><code> MISAKA
MISAKA MISAKA</code></pre>
<h3 id="return-value">Return value</h3>
<p><code>horizontal_cat</code> and <code>vertical_cat</code> will exit with zero status on success.</p>
<p>If any input file fails to open, <code>horizontal_cat</code> and <code>vertical_cat</code> will
2013/morgan1/README.md
+12 -12
View File
@@ -1,14 +1,14 @@
## To build:
```sh
make
make
```
## To use:
```sh
echo "YYYY/MM/DD" | ./morgan1
echo "YYYY/MM/DD" | ./morgan1
```
where `YYYY` is the four digit year, `MM` is the two digit month and `DD` is two
@@ -24,7 +24,7 @@ follows:
## Try:
```sh
./try.sh
./try.sh
```
Use the same keys as described above to change the dates each time the program
@@ -107,20 +107,20 @@ degrees sometimes).
With gcc 4.7.2 on Linux Ubuntu 12.10:
```
morgan1.c:38:3: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
morgan1.c:40:34: warning: value computed is not used [-Wunused-value]
morgan1.c:56:6: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
morgan1.c:58:50: warning: value computed is not used [-Wunused-value]
morgan1.c:61:5: warning: suggest parentheses around ‘-’ inside ‘>>’ [-Wparentheses]
morgan1.c:38:3: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
morgan1.c:40:34: warning: value computed is not used [-Wunused-value]
morgan1.c:56:6: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
morgan1.c:58:50: warning: value computed is not used [-Wunused-value]
morgan1.c:61:5: warning: suggest parentheses around ‘-’ inside ‘>>’ [-Wparentheses]
```
With clang 3.1 on Linux Ubuntu 12.10 :
```
morgan1.c:38:49: warning: '&&' within '||' [-Wlogical-op-parentheses]
morgan1.c:38:27: warning: '&&' within '||' [-Wlogical-op-parentheses]
morgan1.c:55:13: warning: '&&' within '||' [-Wlogical-op-parentheses]
morgan1.c:56:14: warning: '&&' within '||' [-Wlogical-op-parentheses]
morgan1.c:38:49: warning: '&&' within '||' [-Wlogical-op-parentheses]
morgan1.c:38:27: warning: '&&' within '||' [-Wlogical-op-parentheses]
morgan1.c:55:13: warning: '&&' within '||' [-Wlogical-op-parentheses]
morgan1.c:56:14: warning: '&&' within '||' [-Wlogical-op-parentheses]
```
This is due to most of the parentheses and braces being removed when
2013/morgan1/index.html
+13 -14
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Yves-Marie_Morgan">Yves-Marie Morgan</a><br>
Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<em>France</em>)
<br><br></li>
Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<em>France</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,9 +141,9 @@ Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<e
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> <span class="st">&quot;YYYY/MM/DD&quot;</span> <span class="kw">|</span> <span class="ex">./morgan1</span></span></code></pre></div>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&quot;YYYY/MM/DD&quot;</span> <span class="kw">|</span> <span class="ex">./morgan1</span></span></code></pre></div>
<p>where <code>YYYY</code> is the four digit year, <code>MM</code> is the two digit month and <code>DD</code> is two
digit day of the month. The arrow keys control the shifting of the date as
follows:</p>
@@ -155,7 +154,7 @@ follows:</p>
<li>Down : go backwards 20 days.</li>
</ul>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<p>Use the same keys as described above to change the dates each time the program
window is in focus.</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
@@ -218,16 +217,16 @@ degrees sometimes).</li>
</ul>
<h3 id="compilation-warnings">Compilation warnings</h3>
<p>With gcc 4.7.2 on Linux Ubuntu 12.10:</p>
<pre><code>morgan1.c:38:3: warning: suggest parentheses around ‘&amp;&amp;’ within ‘||’ [-Wparentheses]
morgan1.c:40:34: warning: value computed is not used [-Wunused-value]
morgan1.c:56:6: warning: suggest parentheses around ‘&amp;&amp;’ within ‘||’ [-Wparentheses]
morgan1.c:58:50: warning: value computed is not used [-Wunused-value]
morgan1.c:61:5: warning: suggest parentheses around ‘-’ inside ‘&gt;&gt;’ [-Wparentheses]</code></pre>
<pre><code> morgan1.c:38:3: warning: suggest parentheses around ‘&amp;&amp;’ within ‘||’ [-Wparentheses]
morgan1.c:40:34: warning: value computed is not used [-Wunused-value]
morgan1.c:56:6: warning: suggest parentheses around ‘&amp;&amp;’ within ‘||’ [-Wparentheses]
morgan1.c:58:50: warning: value computed is not used [-Wunused-value]
morgan1.c:61:5: warning: suggest parentheses around ‘-’ inside ‘&gt;&gt;’ [-Wparentheses]</code></pre>
<p>With clang 3.1 on Linux Ubuntu 12.10 :</p>
<pre><code>morgan1.c:38:49: warning: &#39;&amp;&amp;&#39; within &#39;||&#39; [-Wlogical-op-parentheses]
morgan1.c:38:27: warning: &#39;&amp;&amp;&#39; within &#39;||&#39; [-Wlogical-op-parentheses]
morgan1.c:55:13: warning: &#39;&amp;&amp;&#39; within &#39;||&#39; [-Wlogical-op-parentheses]
morgan1.c:56:14: warning: &#39;&amp;&amp;&#39; within &#39;||&#39; [-Wlogical-op-parentheses]</code></pre>
<pre><code> morgan1.c:38:49: warning: &#39;&amp;&amp;&#39; within &#39;||&#39; [-Wlogical-op-parentheses]
morgan1.c:38:27: warning: &#39;&amp;&amp;&#39; within &#39;||&#39; [-Wlogical-op-parentheses]
morgan1.c:55:13: warning: &#39;&amp;&amp;&#39; within &#39;||&#39; [-Wlogical-op-parentheses]
morgan1.c:56:14: warning: &#39;&amp;&amp;&#39; within &#39;||&#39; [-Wlogical-op-parentheses]</code></pre>
<p>This is due to most of the parentheses and braces being removed when
unnecessary.</p>
<p>To verify the display, you can look at one of these programs :
2013/morgan2/README.md
+5 -5
View File
@@ -1,7 +1,7 @@
## To build:
```sh
make
make
```
@@ -10,13 +10,13 @@ make
For the console version (ncurses):
```sh
./morgan2
./morgan2
```
For the graphical version (X11):
```sh
./morgan2 X
./morgan2 X
```
@@ -133,13 +133,13 @@ simply press `q` when you have finished...
With gcc 4.7.2 on Linux Ubuntu 12.10 :
```
morgan2.c:46:65: warning: value computed is not used [-Wunused-value]
morgan2.c:46:65: warning: value computed is not used [-Wunused-value]
```
With clang 3.1 on Linux Ubuntu 12.10 :
```
morgan2.c:23:24: warning: adding 'int' to a string does not append to the string [-Wstring-plus-int]
morgan2.c:23:24: warning: adding 'int' to a string does not append to the string [-Wstring-plus-int]
```
**!!!!! HAVE FUN !!!!!**
2013/morgan2/index.html
+6 -7
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Yves-Marie_Morgan">Yves-Marie Morgan</a><br>
Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<em>France</em>)
<br><br></li>
Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<em>France</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,12 +141,12 @@ Location: <a href="../../location.html#FR">FR</a> - <em>French Republic</em> (<e
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<h2 id="to-use">To use:</h2>
<p>For the console version (ncurses):</p>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./morgan2</span></span></code></pre></div>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./morgan2</span></span></code></pre></div>
<p>For the graphical version (X11):</p>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./morgan2</span> X</span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./morgan2</span> X</span></code></pre></div>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>The judges enjoyed playing the game almost to completion; if we remember
correctly, we managed to place 59 or 60 dominoes. We wonder, what would be
@@ -228,9 +227,9 @@ use.</li>
</ul>
<h3 id="compilation-warnings">Compilation warnings</h3>
<p>With gcc 4.7.2 on Linux Ubuntu 12.10 :</p>
<pre><code>morgan2.c:46:65: warning: value computed is not used [-Wunused-value]</code></pre>
<pre><code> morgan2.c:46:65: warning: value computed is not used [-Wunused-value]</code></pre>
<p>With clang 3.1 on Linux Ubuntu 12.10 :</p>
<pre><code>morgan2.c:23:24: warning: adding &#39;int&#39; to a string does not append to the string [-Wstring-plus-int]</code></pre>
<pre><code> morgan2.c:23:24: warning: adding &#39;int&#39; to a string does not append to the string [-Wstring-plus-int]</code></pre>
<p><strong>!!!!! HAVE FUN !!!!!</strong></p>
<!--
2013/robison/README.md
+5 -5
View File
@@ -1,24 +1,24 @@
## To build:
```sh
make
make
```
## To use:
```sh
./robison
# enter an expression
./robison
# enter an expression
echo expression | ./robison
echo expression | ./robison
```
## Try:
```sh
./try.sh
./try.sh
```
2013/robison/index.html
+6 -7
View File
@@ -132,8 +132,7 @@
<h2 id="author"><a name="author"></a>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>)
<br><br></li>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
</ul>
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,14 +141,14 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
<h2 id="to-build">To build:</h2>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
<h2 id="to-use">To use:</h2>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./robison</span></span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a><span class="co"># enter an expression</span></span>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./robison</span></span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="co"># enter an expression</span></span>
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> expression <span class="kw">|</span> <span class="ex">./robison</span></span></code></pre></div>
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> expression <span class="kw">|</span> <span class="ex">./robison</span></span></code></pre></div>
<h2 id="try">Try:</h2>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span></span></code></pre></div>
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>Of integers this prog does a lot,<br />
plus minus, div times (and what not).</p>