Mercurial > hg > Members > kono > Cerium

diff Document/document/html/Random_8cc-source.html @ 291:3569d31705b6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
document
author kono@localhost.localdomain
date Fri, 05 Jun 2009 18:16:31 +0900
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Document/document/html/Random_8cc-source.html	Fri Jun 05 18:16:31 2009 +0900
@@ -0,0 +1,74 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
+<title>Cerium: Random.cc Source File</title>
+<link href="doxygen.css" rel="stylesheet" type="text/css">
+<link href="tabs.css" rel="stylesheet" type="text/css">
+</head><body>
+<!-- Generated by Doxygen 1.5.7.1 -->
+<div class="navigation" id="top">
+  <div class="tabs">
+    <ul>
+      <li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
+      <li><a href="annotated.html"><span>Classes</span></a></li>
+      <li class="current"><a href="files.html"><span>Files</span></a></li>
+    </ul>
+  </div>
+  <div class="tabs">
+    <ul>
+      <li><a href="files.html"><span>File&nbsp;List</span></a></li>
+    </ul>
+  </div>
+<h1>Random.cc</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
+<a name="l00002"></a>00002 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
+<a name="l00003"></a>00003 <span class="preprocessor">#include &lt;sys/time.h&gt;</span>
+<a name="l00004"></a>00004 <span class="preprocessor">#include "Random.h"</span>
+<a name="l00005"></a>00005 
+<a name="l00009"></a>00009 Random::Random(<span class="keywordtype">void</span>)
+<a name="l00010"></a>00010 {
+<a name="l00011"></a>00011     reset();
+<a name="l00012"></a>00012 }
+<a name="l00013"></a>00013 
+<a name="l00017"></a>00017 Random::Random(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> seed)
+<a name="l00018"></a>00018 {
+<a name="l00019"></a>00019     srandom(seed);
+<a name="l00020"></a>00020 }
+<a name="l00021"></a>00021 
+<a name="l00022"></a>00022 <span class="keywordtype">void</span>
+<a name="l00023"></a>00023 Random::reset(<span class="keywordtype">void</span>)
+<a name="l00024"></a>00024 {
+<a name="l00025"></a>00025     FILE *fp;
+<a name="l00026"></a>00026     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> seed;
+<a name="l00027"></a>00027     <span class="keyword">struct </span>timeval tv;
+<a name="l00028"></a>00028 
+<a name="l00029"></a>00029     fp = fopen(<span class="stringliteral">"/dev/urandom"</span>, <span class="stringliteral">"r"</span>);
+<a name="l00030"></a>00030     <span class="keywordflow">if</span> (!fp) fp = fopen(<span class="stringliteral">"/dev/random"</span>, <span class="stringliteral">"r"</span>);
+<a name="l00031"></a>00031 
+<a name="l00032"></a>00032     <span class="keywordflow">if</span> (fp) {
+<a name="l00033"></a>00033         <span class="keywordtype">int</span> res = fread(&amp;seed, <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>), 1, fp);
+<a name="l00034"></a>00034         <span class="keywordflow">if</span> (res != <span class="keyword">sizeof</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>)) {
+<a name="l00035"></a>00035             fclose(fp);
+<a name="l00036"></a>00036             fp = NULL;
+<a name="l00037"></a>00037         }
+<a name="l00038"></a>00038     }
+<a name="l00039"></a>00039 
+<a name="l00040"></a>00040     <span class="keywordflow">if</span> (!fp) {
+<a name="l00041"></a>00041         gettimeofday(&amp;tv, NULL);
+<a name="l00042"></a>00042         seed = (tv.tv_sec ^ tv.tv_usec);
+<a name="l00043"></a>00043     } <span class="keywordflow">else</span> {
+<a name="l00044"></a>00044         fclose(fp);
+<a name="l00045"></a>00045     }
+<a name="l00046"></a>00046 
+<a name="l00047"></a>00047     srandom(seed);
+<a name="l00048"></a>00048 }
+<a name="l00049"></a>00049 
+<a name="l00050"></a>00050 <span class="keywordtype">int</span>
+<a name="l00051"></a>00051 Random::getData(<span class="keywordtype">void</span>)
+<a name="l00052"></a>00052 {
+<a name="l00053"></a>00053     <span class="keywordflow">return</span> random();
+<a name="l00054"></a>00054 }
+</pre></div></div>
+<hr size="1"><address style="text-align: right;"><small>Generated on Fri Jun 5 18:14:06 2009 for Cerium by&nbsp;
+<a href="http://www.doxygen.org/index.html">
+<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.7.1 </small></address>
+</body>
+</html>