<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="generator" content="TempleOS V5.03">
<meta name="viewport" content="width=device-width">
<link rel="stylesheet" href="/style/templeos.css">
<script src="/script/templeos.js"></script>
<style type="text/css">
.cF0{color:#000000;background-color:#ffffff;}
.cF1{color:#0000aa;background-color:#ffffff;}
.cF2{color:#00aa00;background-color:#ffffff;}
.cF3{color:#00aaaa;background-color:#ffffff;}
.cF4{color:#aa0000;background-color:#ffffff;}
.cF5{color:#aa00aa;background-color:#ffffff;}
.cF6{color:#aa5500;background-color:#ffffff;}
.cF7{color:#aaaaaa;background-color:#ffffff;}
.cF8{color:#555555;background-color:#ffffff;}
.cF9{color:#5555ff;background-color:#ffffff;}
.cFA{color:#55ff55;background-color:#ffffff;}
.cFB{color:#55ffff;background-color:#ffffff;}
.cFC{color:#ff5555;background-color:#ffffff;}
.cFD{color:#ff55ff;background-color:#ffffff;}
.cFE{color:#ffff55;background-color:#ffffff;}
.cFF{color:#ffffff;background-color:#ffffff;}
</style>
</head>
<body>
<pre id="content">
<a name="l1"></a><span class=cF2>//You may wonder why I use "&" instead of "%".</span><span class=cF0>
<a name="l2"></a>
<a name="l3"></a>#</span><span class=cF1>define</span><span class=cF0> SAMPLE_SIZE 100000000
<a name="l4"></a>
<a name="l5"></a></span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>TimeIns</span><span class=cF0>()
<a name="l6"></a>{
<a name="l7"></a> </span><span class=cF9>I64</span><span class=cF0> start1,end1,start2,end2,overhead_time,test_time;
<a name="l8"></a> </span><span class=cF9>I64</span><span class=cF0> </span><span class=cF1>reg</span><span class=cF0> i,</span><span class=cF1>reg</span><span class=cF0> tmp;
<a name="l9"></a>
<a name="l10"></a> </span><span class=cF5>CPURep</span><span class=cF0>;
<a name="l11"></a>
<a name="l12"></a> </span><span class=cF2>//Measure Loop Overhead</span><span class=cF0>
<a name="l13"></a> start1=</span><span class=cF5>GetTSC</span><span class=cF0>;
<a name="l14"></a> </span><span class=cF1>for</span><span class=cF0> (i=0;i<SAMPLE_SIZE;i++) </span><span class=cF7>{</span><span class=cF0>
<a name="l15"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l16"></a> end1=</span><span class=cF5>GetTSC</span><span class=cF0>;
<a name="l17"></a> overhead_time=end1-start1;
<a name="l18"></a>
<a name="l19"></a> </span><span class=cF2>//Measure remainder...</span><span class=cF0>
<a name="l20"></a> start2=</span><span class=cF5>GetTSC</span><span class=cF0>;
<a name="l21"></a> </span><span class=cF1>for</span><span class=cF0> (i=0;i<SAMPLE_SIZE;i++)
<a name="l22"></a> tmp=i%0x400;
<a name="l23"></a> end2=</span><span class=cF5>GetTSC</span><span class=cF0>;
<a name="l24"></a> test_time=end2-start2;
<a name="l25"></a> </span><span class=cF6>"Remainder Version #1 Cycles\t: %10.5f\n"</span><span class=cF0>,
<a name="l26"></a> </span><span class=cF5>ToF64</span><span class=cF0>(test_time-overhead_time)/SAMPLE_SIZE;
<a name="l27"></a>
<a name="l28"></a> </span><span class=cF2>//Measure remainder...</span><span class=cF0>
<a name="l29"></a> start2=</span><span class=cF5>GetTSC</span><span class=cF0>;
<a name="l30"></a> </span><span class=cF1>for</span><span class=cF0> (i=0;i<SAMPLE_SIZE;i++)
<a name="l31"></a> tmp=i&0x3FF;
<a name="l32"></a> end2=</span><span class=cF5>GetTSC</span><span class=cF0>;
<a name="l33"></a> test_time=end2-start2;
<a name="l34"></a> </span><span class=cF6>"Remainder Version #2 Cycles\t: %10.5f\n"</span><span class=cF0>,
<a name="l35"></a> </span><span class=cF5>ToF64</span><span class=cF0>(test_time-overhead_time)/SAMPLE_SIZE;
<a name="l36"></a>}
<a name="l37"></a>
<a name="l38"></a></span><span class=cF5>TimeIns</span><span class=cF0>;
<a name="l39"></a>
<a name="l40"></a></span><span class=cF2>/* Program Output</span><span class=cF1>
<a name="l41"></a>8 Cores 2.660GHz
<a name="l42"></a>Remainder Version #1 Cycles : 26.85345
<a name="l43"></a>Remainder Version #2 Cycles : -0.00800
<a name="l44"></a></span><span class=cF2>*/</span><span class=cF1>
</span></pre></body>
</html>