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Landon Curt Noll 09750f8899 release winning entries of IOCCC28 under the year 2024
Congratulations to:

* 2024/anders - Prize in sound coding - layered music generator
* 2024/burton - Prize in pentagrammatology - wordle hard mode solver
* 2024/cable1 - Prize in bot talk - LLM inference engine
* 2024/cable2 - Prize in murky waters - salmon recipe
* 2024/carlini - Prize in perfect timing - Intel 4004 emulation
* 2024/codemeow - Prize in tray planting - bonsai generator
* 2024/endoh1 - Prize in patient pointillism - slow ray tracer in CPP
* 2024/endoh2 - Prize in solid body physics - rotating rigid body simulation
* 2024/ferguson1 - Prize in diabolical logistics - Oregon trail pact with the devil
* 2024/ferguson2 - Prize in yil-tas - Navajo code talker translator
* 2024/howe - Nice accent eh-ward - mini vi
* 2024/kramer - Prize in linguistic arithmetic - natural language numerical calculator
* 2024/kurdyukov1 - Prize in phased periodicity - phase of the Moon
* 2024/kurdyukov2 - Prize in art restoration - JPEG artifact removal
* 2024/kurdyukov3 - Prize in virtual quietus - gaming VM and doom
* 2024/kurdyukov4 - Prize in embiggening - encode without literals
* 2024/maffiodo - Prize in creative interpretation - Jav\*script interpreter
* 2024/mills - Prize in ℤ₃ - Infocom v3 story interpreter
* 2024/stedolan - Best one liner - icon from MD5
* 2024/straadt - Prize in imitative rebooting - OpenRISC CPU and Linux
* 2024/tmarrec - Prize in cyclonic coding - 3D tornado simulation
* 2024/tompng - Prize in quasi bijection - vortex encryptor decryptor
* 2024/weaver - Sur prize - rickroll

Ran `make update` to perform the above.
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<h1>The International Obfuscated C Code Contest</h1>
<h2>2024/anders - Prize in sound coding</h2>
<h3>layered music generator</h3>
</div>
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<div class="navbar">
<a class="Left" href="../../2020/yang/index.html">&larr; 2020/yang</a>
<a class="Left" href="../index.html">&uarr; 2024 &uarr;</a>
<a class="Left" href="../burton/index.html">2024/burton &rarr;</a>
<a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2024/anders/prog.c">C code</a>
<a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2024/anders/Makefile">Makefile</a>
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<h2 id="author">Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Anders_Kaare_Straadt">Anders Kaare Straadt</a><br>
Location: <a href="../../location.html#DK">DK</a> - <em>Denmark</em></li>
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<h2 id="to-build">To build:</h2>
<pre><code> make all</code></pre>
<h2 id="to-use">To use:</h2>
<pre><code> ./prog</code></pre>
<h2 id="try">Try:</h2>
<pre><code> ./prog</code></pre>
<p>and then play the resulting <code>prog.wav</code> using a sound player.</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>When you run the program, after several moments, a <code>prog.wav</code> sound file is produced.</p>
<p>Using a sound player (you may find <code>sox(1)</code> is a good choice), you may enjoy the result.</p>
<p>Can you figure out how it produces the various layers of instruments?</p>
<h2 id="authors-remarks">Author’s remarks:</h2>
<h3 id="obfuscations">Obfuscations</h3>
<ul>
<li>“Helpful” formatting</li>
<li>Character salad</li>
<li>Loop exit trying to hide by a switch statement</li>
<li>Strong string encryption. By that I mean “fmt”=&gt;“gnu”.</li>
<li>A <code>/*{*/</code> that throws off bracket matching in vim. Begun the editor wars
have! (Wait, I’m <strong>on</strong> the vim-team!)</li>
<li><code>cm</code> and <code>ap</code> stands for “allpass” and “comb”, respectively.</li>
<li>One effect was created with deliberate “memory corruption”.</li>
</ul>
<p>To encourage tinkering I’ve obfuscated the song data and program (see Y()) less
than the “library code”. Sorry if you wanted to tinker with the library code!</p>
<h3 id="sound-quality">Sound quality</h3>
<p>The sample rate of prog.wav is 256kHz because creating aliasing-free waveforms
would require more code, but you can always oversample the audio and pass the
anti-aliasing problem on to the audio player :-) However, the downsampler in my
<code>mplayer(1)</code> is poor, but you can use the high-quality resampler in <code>sox(1)</code> to create a
48kHz version:</p>
<pre class="&lt;!---c---&gt;"><code> sox prog.wav -r 48000 prog.48kHz.wav</code></pre>
<h3 id="tricks-the-condescending-part">Tricks (the condescending part)</h3>
<ul>
<li>Kick drum from sines, pitched up to create toms.</li>
<li>Roland TR-808 style hi-hats (a bunch of high-pass filtered square waves).</li>
<li>SID/C64-style snare drum (oscillates between noise and square wave).</li>
<li>There’s some FM synthesis in the bass.</li>
<li>Schroeder reverberator a la Freeverb. The same building blocks are used for
the echo effect.</li>
<li>Waveshaping/overdrive using tanh(x), ohh yeaaah..</li>
</ul>
<p>I used this Python snippet to generate <code>q0[2]</code> and <code>q0[3]</code>:</p>
<pre><code> def X(s): print(hex(int(s.replace(&quot;x&quot;,&quot;1&quot;).replace(&quot;.&quot;,&quot;0&quot;)[::-1],2))) # not for iopcc-use
X(&quot;.x.x..xx.x.xx.xxx.xx.xxx..xx.xxx&quot;)
X(&quot;x.xx.x.x.x.xxxxxx.xx.xxx.xxxxxxx&quot;)</code></pre>
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<h1 id="inventory-for-2024anders">Inventory for 2024/anders</h1>
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<h2 id="primary-files">Primary files</h2>
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<li><a href="https://github.com/ioccc-src/winner/blob/master/2024/anders/prog.c">prog.c</a> - entry source code</li>
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