[Assorted-commits] SF.net SVN: assorted: [475] cpp-commons/trunk/src/commons/rand.h

[<yan...@us...>]

Revision: 475
          http://assorted.svn.sourceforge.net/assorted/?rev=475&view=rev
Author:   yangzhang
Date:     2008-02-21 02:47:39 -0800 (Thu, 21 Feb 2008)

Log Message:
-----------
added rng from rtm's code

Added Paths:
-----------
    cpp-commons/trunk/src/commons/rand.h

Added: cpp-commons/trunk/src/commons/rand.h
===================================================================
--- cpp-commons/trunk/src/commons/rand.h	                        (rev 0)
+++ cpp-commons/trunk/src/commons/rand.h	2008-02-21 10:47:39 UTC (rev 475)
@@ -0,0 +1,21 @@
+#ifndef COMMONS_RAND_H_
+#define COMMONS_RAND_H_
+
+namespace commons
+{
+  /**
+   * TODO: Identify and rename this RNG.
+   */
+  class posix_rand {
+  private:
+    unsigned long randx;
+  public:
+    posix_rand(long s = 0) { randx = s; }
+    void seed(long s) { randx = s; }
+    long abs(long x) { return x & 0x7fffffff; }
+    long draw() { return randx = randx * 1103515245 + 12345; }
+    long operator()() { return abs(draw()); }
+  };
+}
+
+#endif


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.