1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - apps/factorial.mu</title>
<meta name="Generator" content="Vim/8.1">
<meta name="plugin-version" content="vim8.1_v1">
<meta name="syntax" content="none">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal-light">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.muComment { color: #005faf; }
.LineNr { }
.SpecialChar { color: #d70000; }
.Constant { color: #008787; }
.muFunction { color: #af5f00; text-decoration: underline; }
.muTest { color: #5f8700; }
.Delimiter { color: #c000c0; }
.PreProc { color: #c000c0; }
-->
</style>
<script type='text/javascript'>
<!--
/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
var lineNum;
lineNum = window.location.hash;
lineNum = lineNum.substr(1); /* strip off '#' */
if (lineNum.indexOf('L') == -1) {
lineNum = 'L'+lineNum;
}
var lineElem = document.getElementById(lineNum);
/* Always jump to new location even if the line was hidden inside a fold, or
* we corrected the raw number to a line ID.
*/
if (lineElem) {
lineElem.scrollIntoView(true);
}
return true;
}
if ('onhashchange' in window) {
window.onhashchange = JumpToLine;
}
-->
</script>
</head>
<body onload='JumpToLine();'>
<a href='https://github.com/akkartik/mu/blob/main/apps/factorial.mu'>https://github.com/akkartik/mu/blob/main/apps/factorial.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="muComment"># compute the factorial of 5, and return the result in the exit code</span>
<span id="L2" class="LineNr"> 2 </span><span class="muComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="muComment"># To run:</span>
<span id="L4" class="LineNr"> 4 </span><span class="muComment"># $ ./translate_mu apps/factorial.mu</span>
<span id="L5" class="LineNr"> 5 </span><span class="muComment"># $ ./a.elf</span>
<span id="L6" class="LineNr"> 6 </span><span class="muComment"># $ echo $?</span>
<span id="L7" class="LineNr"> 7 </span><span class="muComment"># 120</span>
<span id="L8" class="LineNr"> 8 </span><span class="muComment">#</span>
<span id="L9" class="LineNr"> 9 </span><span class="muComment"># You can also run the automated test suite:</span>
<span id="L10" class="LineNr">10 </span><span class="muComment"># $ ./a.elf test</span>
<span id="L11" class="LineNr">11 </span><span class="muComment"># Expected output:</span>
<span id="L12" class="LineNr">12 </span><span class="muComment"># ........</span>
<span id="L13" class="LineNr">13 </span><span class="muComment"># Every '.' indicates a passing test. Failing tests get a 'F'.</span>
<span id="L14" class="LineNr">14 </span><span class="muComment"># There's only one test in this file, but you'll also see tests running from</span>
<span id="L15" class="LineNr">15 </span><span class="muComment"># Mu's standard library.</span>
<span id="L16" class="LineNr">16 </span><span class="muComment">#</span>
<span id="L17" class="LineNr">17 </span><span class="muComment"># Compare apps/factorial4.subx</span>
<span id="L18" class="LineNr">18 </span>
<span id="L19" class="LineNr">19 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='factorial.mu.html#L19'>factorial</a></span> n: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int <span class="Delimiter">{</span>
<span id="L20" class="LineNr">20 </span> compare n, <span class="Constant">1</span>
<span id="L21" class="LineNr">21 </span> <span class="muComment"># if (n <= 1) return 1</span>
<span id="L22" class="LineNr">22 </span> <span class="Delimiter">{</span>
<span id="L23" class="LineNr">23 </span> <span class="PreProc">break-if-></span>
<span id="L24" class="LineNr">24 </span> <span class="PreProc">return</span> <span class="Constant">1</span>
<span id="L25" class="LineNr">25 </span> <span class="Delimiter">}</span>
<span id="L26" class="LineNr">26 </span> <span class="muComment"># n > 1; return n * factorial(n-1)</span>
<span id="L27" class="LineNr">27 </span> <span class="PreProc">var</span> tmp/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy n
<span id="L28" class="LineNr">28 </span> tmp <span class="SpecialChar"><-</span> decrement
<span id="L29" class="LineNr">29 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> <a href='factorial.mu.html#L19'>factorial</a> tmp
<span id="L30" class="LineNr">30 </span> result <span class="SpecialChar"><-</span> multiply n
<span id="L31" class="LineNr">31 </span> <span class="PreProc">return</span> result
<span id="L32" class="LineNr">32 </span><span class="Delimiter">}</span>
<span id="L33" class="LineNr">33 </span>
<span id="L34" class="LineNr">34 </span><span class="PreProc">fn</span> <span class="muTest"><a href='factorial.mu.html#L34'>test-factorial</a></span> <span class="Delimiter">{</span>
<span id="L35" class="LineNr">35 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> <a href='factorial.mu.html#L19'>factorial</a> <span class="Constant">5</span>
<span id="L36" class="LineNr">36 </span> <a href='../102test.subx.html#L23'>check-ints-equal</a> result, <span class="Constant">0x78</span>, <span class="Constant">"F - test-factorial"</span>
<span id="L37" class="LineNr">37 </span><span class="Delimiter">}</span>
<span id="L38" class="LineNr">38 </span>
<span id="L39" class="LineNr">39 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='factorial.mu.html#L39'>main</a></span> args-on-stack: (addr array addr array byte)<span class="PreProc"> -> </span>_/<span class="Constant">ebx</span>: int <span class="Delimiter">{</span>
<span id="L40" class="LineNr">40 </span> <span class="PreProc">var</span> args/<span class="Constant">eax</span>: (addr array addr array byte) <span class="SpecialChar"><-</span> copy args-on-stack
<span id="L41" class="LineNr">41 </span> <span class="muComment"># len = length(args)</span>
<span id="L42" class="LineNr">42 </span> <span class="PreProc">var</span> len/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> length args
<span id="L43" class="LineNr">43 </span> <span class="muComment"># if (len <= 1) return factorial(5)</span>
<span id="L44" class="LineNr">44 </span> compare len, <span class="Constant">1</span>
<span id="L45" class="LineNr">45 </span> <span class="Delimiter">{</span>
<span id="L46" class="LineNr">46 </span> <span class="PreProc">break-if-></span>
<span id="L47" class="LineNr">47 </span> <span class="PreProc">var</span> exit-status/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> <a href='factorial.mu.html#L19'>factorial</a> <span class="Constant">5</span>
<span id="L48" class="LineNr">48 </span> <span class="PreProc">return</span> exit-status
<span id="L49" class="LineNr">49 </span> <span class="Delimiter">}</span>
<span id="L50" class="LineNr">50 </span> <span class="muComment"># if (args[1] == "test") run-tests()</span>
<span id="L51" class="LineNr">51 </span> <span class="PreProc">var</span> tmp2/<span class="Constant">ecx</span>: (addr addr array byte) <span class="SpecialChar"><-</span> index args, <span class="Constant">1</span>
<span id="L52" class="LineNr">52 </span> <span class="PreProc">var</span> tmp3/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='../105string-equal.subx.html#L15'>string-equal?</a> *tmp2, <span class="Constant">"test"</span>
<span id="L53" class="LineNr">53 </span> compare tmp3, <span class="Constant">0</span>
<span id="L54" class="LineNr">54 </span> <span class="Delimiter">{</span>
<span id="L55" class="LineNr">55 </span> <span class="PreProc">break-if-=</span>
<span id="L56" class="LineNr">56 </span> run-tests
<span id="L57" class="LineNr">57 </span> <span class="muComment"># TODO: get at Num-test-failures somehow</span>
<span id="L58" class="LineNr">58 </span> <span class="Delimiter">}</span>
<span id="L59" class="LineNr">59 </span> <span class="PreProc">return</span> <span class="Constant">0</span>
<span id="L60" class="LineNr">60 </span><span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|