7314

author: Kartik Agaram <vc@akkartik.com> 2020-12-01 01:02:12 -0800
committer: Kartik Agaram <vc@akkartik.com> 2020-12-01 01:02:12 -0800
commit: 4e8daa6a0e3f423ef7ef6441c4ecc04c17115664 (patch)
tree: 476ec872d03090a766983605cd8cd53ee475fea2 /html/apps/advent2020/1b.mu.html
parent: 05ad07b63ebfc6d0e80e20693612aacd6024cb2a (diff)
download: mu-4e8daa6a0e3f423ef7ef6441c4ecc04c17115664.tar.gz
1 files changed, 163 insertions, 0 deletions
diff --git a/html/apps/advent2020/1b.mu.html b/html/apps/advent2020/1b.mu.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
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+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - apps/advent2020/1b.mu</title>
+<meta name="Generator" content="Vim/8.1">
+<meta name="plugin-version" content="vim8.1_v1">
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+<body onload='JumpToLine();'>
+<a href='https://github.com/akkartik/mu/blob/master/apps/advent2020/1b.mu'>https://github.com/akkartik/mu/blob/master/apps/advent2020/1b.mu</a>
+<pre id='vimCodeElement'>
+<span id="L1" class="LineNr">  1 </span><span class="PreProc">fn</span> <span class="muFunction">main</span><span class="PreProc"> -&gt; </span>_/<span class="Constant">ebx</span>: int <span class="Delimiter">{</span>
+<span id="L2" class="LineNr">  2 </span>  <span class="muComment"># data structure</span>
+<span id="L3" class="LineNr">  3 </span>  <span class="PreProc">var</span> numbers-storage: (array int <span class="Constant">0x100</span>)  <span class="muComment"># 256 ints</span>
+<span id="L4" class="LineNr">  4 </span>  <span class="PreProc">var</span> numbers/<span class="Constant">esi</span>: (addr array int) <span class="SpecialChar">&lt;-</span> address numbers-storage
+<span id="L5" class="LineNr">  5 </span>  <span class="PreProc">var</span> numbers-index/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0</span>
+<span id="L6" class="LineNr">  6 </span>  <span class="muComment"># phase 1: parse each line from stdin and add it to numbers</span>
+<span id="L7" class="LineNr">  7 </span>  <span class="Delimiter">{</span>
+<span id="L8" class="LineNr">  8 </span>    <span class="PreProc">var</span> line-storage: (stream byte <span class="Constant">0x100</span>)  <span class="muComment"># 256 bytes</span>
+<span id="L9" class="LineNr">  9 </span>    <span class="PreProc">var</span> line/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address line-storage
+<span id="L10" class="LineNr"> 10 </span>    <span class="Delimiter">{</span>
+<span id="L11" class="LineNr"> 11 </span><span class="CommentedCode">#?       print-string 0, &quot;== iter\n&quot;</span>
+<span id="L12" class="LineNr"> 12 </span>      <span class="muComment"># read line from stdin</span>
+<span id="L13" class="LineNr"> 13 </span>      <a href='../../106stream.subx.html#L17'>clear-stream</a> line
+<span id="L14" class="LineNr"> 14 </span>      <a href='../../305keyboard.subx.html#L158'>read-line-from-real-keyboard</a> line
+<span id="L15" class="LineNr"> 15 </span>      <span class="muComment"># if line is empty (not even a newline), quit</span>
+<span id="L16" class="LineNr"> 16 </span>      <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='../../309stream.subx.html#L6'>stream-empty?</a> line
+<span id="L17" class="LineNr"> 17 </span>      compare done?, <span class="Constant">0</span>  <span class="muComment"># false</span>
+<span id="L18" class="LineNr"> 18 </span>      <span class="PreProc">break-if-!=</span>
+<span id="L19" class="LineNr"> 19 </span><span class="CommentedCode">#?       print-stream-to-real-screen line</span>
+<span id="L20" class="LineNr"> 20 </span>      <span class="muComment"># convert line to int and append it to numbers</span>
+<span id="L21" class="LineNr"> 21 </span>      <span class="PreProc">var</span> n/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='../../311decimal-int.subx.html#L48'>parse-decimal-int-from-stream</a> line
+<span id="L22" class="LineNr"> 22 </span><span class="CommentedCode">#?       print-int32-decimal 0, n</span>
+<span id="L23" class="LineNr"> 23 </span><span class="CommentedCode">#?       print-string 0, &quot;\n&quot;</span>
+<span id="L24" class="LineNr"> 24 </span>      <span class="PreProc">var</span> dest/<span class="Constant">ebx</span>: (addr int) <span class="SpecialChar">&lt;-</span> index numbers, numbers-index
+<span id="L25" class="LineNr"> 25 </span>      copy-to *dest, n
+<span id="L26" class="LineNr"> 26 </span>      numbers-index <span class="SpecialChar">&lt;-</span> increment
+<span id="L27" class="LineNr"> 27 </span><span class="CommentedCode">#?       print-string 0, &quot;== &quot;</span>
+<span id="L28" class="LineNr"> 28 </span><span class="CommentedCode">#?       print-int32-decimal 0, numbers-index</span>
+<span id="L29" class="LineNr"> 29 </span><span class="CommentedCode">#?       print-string 0, &quot;\n&quot;</span>
+<span id="L30" class="LineNr"> 30 </span>      <span class="PreProc">loop</span>
+<span id="L31" class="LineNr"> 31 </span>    <span class="Delimiter">}</span>
+<span id="L32" class="LineNr"> 32 </span>  <span class="Delimiter">}</span>
+<span id="L33" class="LineNr"> 33 </span>  <span class="muComment"># phase 2: for every pair of distinct numbers, check if the rest of the</span>
+<span id="L34" class="LineNr"> 34 </span>  <span class="muComment"># array has 2020-it</span>
+<span id="L35" class="LineNr"> 35 </span>  <span class="PreProc">var</span> i/<span class="Constant">edi</span>: int <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0</span>
+<span id="L36" class="LineNr"> 36 </span>  <span class="Delimiter">{</span>
+<span id="L37" class="LineNr"> 37 </span>    compare i, numbers-index
+<span id="L38" class="LineNr"> 38 </span>    <span class="PreProc">break-if-&gt;=</span>
+<span id="L39" class="LineNr"> 39 </span>    <span class="muComment"># for j from i+1 to end</span>
+<span id="L40" class="LineNr"> 40 </span>    <span class="PreProc">var</span> j/<span class="Constant">edx</span>: int <span class="SpecialChar">&lt;-</span> copy i
+<span id="L41" class="LineNr"> 41 </span>    j <span class="SpecialChar">&lt;-</span> increment
+<span id="L42" class="LineNr"> 42 </span>    <span class="Delimiter">{</span>
+<span id="L43" class="LineNr"> 43 </span>      compare j, numbers-index
+<span id="L44" class="LineNr"> 44 </span>      <span class="PreProc">break-if-&gt;=</span>
+<span id="L45" class="LineNr"> 45 </span>      <span class="Delimiter">{</span>
+<span id="L46" class="LineNr"> 46 </span>        compare i, j
+<span id="L47" class="LineNr"> 47 </span>        <span class="PreProc">break-if-=</span>
+<span id="L48" class="LineNr"> 48 </span>        <span class="PreProc">var</span> target/<span class="Constant">ebx</span>: int <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x7e4</span>  <span class="muComment"># 2020</span>
+<span id="L49" class="LineNr"> 49 </span>        <span class="PreProc">var</span> src/<span class="Constant">edi</span>: (addr int) <span class="SpecialChar">&lt;-</span> index numbers, i
+<span id="L50" class="LineNr"> 50 </span>        target <span class="SpecialChar">&lt;-</span> subtract *src
+<span id="L51" class="LineNr"> 51 </span>        <span class="PreProc">var</span> src2/<span class="Constant">ecx</span>: (addr int) <span class="SpecialChar">&lt;-</span> index numbers, j
+<span id="L52" class="LineNr"> 52 </span>        target <span class="SpecialChar">&lt;-</span> subtract *src2
+<span id="L53" class="LineNr"> 53 </span>        <span class="Delimiter">{</span>
+<span id="L54" class="LineNr"> 54 </span>          <span class="PreProc">var</span> found?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> find-after numbers, j, target
+<span id="L55" class="LineNr"> 55 </span>          compare found?, <span class="Constant">0</span>  <span class="muComment"># false</span>
+<span id="L56" class="LineNr"> 56 </span>          <span class="PreProc">break-if-=</span>
+<span id="L57" class="LineNr"> 57 </span>          <a href='../../405screen.mu.html#L169'>print-string</a> <span class="Constant">0</span>, <span class="Constant">&quot;found\n&quot;</span>
+<span id="L58" class="LineNr"> 58 </span>          <a href='../../405screen.mu.html#L480'>print-int32-decimal</a> <span class="Constant">0</span>, *src
+<span id="L59" class="LineNr"> 59 </span>          <a href='../../405screen.mu.html#L169'>print-string</a> <span class="Constant">0</span>, <span class="Constant">&quot; &quot;</span>
+<span id="L60" class="LineNr"> 60 </span>          <a href='../../405screen.mu.html#L480'>print-int32-decimal</a> <span class="Constant">0</span>, *src2
+<span id="L61" class="LineNr"> 61 </span>          <a href='../../405screen.mu.html#L169'>print-string</a> <span class="Constant">0</span>, <span class="Constant">&quot; &quot;</span>
+<span id="L62" class="LineNr"> 62 </span>          <a href='../../405screen.mu.html#L480'>print-int32-decimal</a> <span class="Constant">0</span>, target
+<span id="L63" class="LineNr"> 63 </span>          <a href='../../405screen.mu.html#L169'>print-string</a> <span class="Constant">0</span>, <span class="Constant">&quot;\n&quot;</span>
+<span id="L64" class="LineNr"> 64 </span>          target <span class="SpecialChar">&lt;-</span> multiply *src
+<span id="L65" class="LineNr"> 65 </span>          target <span class="SpecialChar">&lt;-</span> multiply *src2
+<span id="L66" class="LineNr"> 66 </span>          <a href='../../405screen.mu.html#L480'>print-int32-decimal</a> <span class="Constant">0</span>, target
+<span id="L67" class="LineNr"> 67 </span>          <a href='../../405screen.mu.html#L169'>print-string</a> <span class="Constant">0</span>, <span class="Constant">&quot;\n&quot;</span>
+<span id="L68" class="LineNr"> 68 </span>          <span class="PreProc">return</span> <span class="Constant">0</span>  <span class="muComment"># success</span>
+<span id="L69" class="LineNr"> 69 </span>        <span class="Delimiter">}</span>
+<span id="L70" class="LineNr"> 70 </span>      <span class="Delimiter">}</span>
+<span id="L71" class="LineNr"> 71 </span>      j <span class="SpecialChar">&lt;-</span> increment
+<span id="L72" class="LineNr"> 72 </span>      <span class="PreProc">loop</span>
+<span id="L73" class="LineNr"> 73 </span>    <span class="Delimiter">}</span>
+<span id="L74" class="LineNr"> 74 </span>    i <span class="SpecialChar">&lt;-</span> increment
+<span id="L75" class="LineNr"> 75 </span>    <span class="PreProc">loop</span>
+<span id="L76" class="LineNr"> 76 </span>  <span class="Delimiter">}</span>
+<span id="L77" class="LineNr"> 77 </span>  <span class="PreProc">return</span> <span class="Constant">1</span>  <span class="muComment"># not found</span>
+<span id="L78" class="LineNr"> 78 </span><span class="Delimiter">}</span>
+<span id="L79" class="LineNr"> 79 </span>
+<span id="L80" class="LineNr"> 80 </span><span class="PreProc">fn</span> <span class="muFunction">find-after</span> _numbers: (addr array int), start: int, _target: int<span class="PreProc"> -&gt; </span>_/<span class="Constant">eax</span>: boolean <span class="Delimiter">{</span>
+<span id="L81" class="LineNr"> 81 </span>  <span class="PreProc">var</span> numbers/<span class="Constant">esi</span>: (addr array int) <span class="SpecialChar">&lt;-</span> copy _numbers
+<span id="L82" class="LineNr"> 82 </span>  <span class="PreProc">var</span> target/<span class="Constant">edi</span>: int <span class="SpecialChar">&lt;-</span> copy _target
+<span id="L83" class="LineNr"> 83 </span>  <span class="PreProc">var</span> len/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> length numbers
+<span id="L84" class="LineNr"> 84 </span>  <span class="PreProc">var</span> i/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> copy start
+<span id="L85" class="LineNr"> 85 </span>  i <span class="SpecialChar">&lt;-</span> increment
+<span id="L86" class="LineNr"> 86 </span>  <span class="Delimiter">{</span>
+<span id="L87" class="LineNr"> 87 </span>    compare i, len
+<span id="L88" class="LineNr"> 88 </span>    <span class="PreProc">break-if-&gt;=</span>
+<span id="L89" class="LineNr"> 89 </span>    <span class="PreProc">var</span> src/<span class="Constant">edx</span>: (addr int) <span class="SpecialChar">&lt;-</span> index numbers, i
+<span id="L90" class="LineNr"> 90 </span>    <span class="muComment"># if *src == target, return true</span>
+<span id="L91" class="LineNr"> 91 </span>    compare *src, target
+<span id="L92" class="LineNr"> 92 </span>    <span class="Delimiter">{</span>
+<span id="L93" class="LineNr"> 93 </span>      <span class="PreProc">break-if-!=</span>
+<span id="L94" class="LineNr"> 94 </span>      <span class="PreProc">return</span> <span class="Constant">1</span>  <span class="muComment"># true</span>
+<span id="L95" class="LineNr"> 95 </span>    <span class="Delimiter">}</span>
+<span id="L96" class="LineNr"> 96 </span>    i <span class="SpecialChar">&lt;-</span> increment
+<span id="L97" class="LineNr"> 97 </span>    <span class="PreProc">loop</span>
+<span id="L98" class="LineNr"> 98 </span>  <span class="Delimiter">}</span>
+<span id="L99" class="LineNr"> 99 </span>  <span class="PreProc">return</span> <span class="Constant">0</span>  <span class="muComment"># false</span>
+<span id="L100" class="LineNr">100 </span><span class="Delimiter">}</span>
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->
author	Kartik Agaram <vc@akkartik.com>	2020-12-01 01:02:12 -0800
committer	Kartik Agaram <vc@akkartik.com>	2020-12-01 01:02:12 -0800
commit	4e8daa6a0e3f423ef7ef6441c4ecc04c17115664 (patch)
tree	476ec872d03090a766983605cd8cd53ee475fea2 /html/apps/advent2020/1b.mu.html
parent	05ad07b63ebfc6d0e80e20693612aacd6024cb2a (diff)
download	mu-4e8daa6a0e3f423ef7ef6441c4ecc04c17115664.tar.gz