diff src/samer/maths/random/Exponential.java @ 0:bf79fb79ee13

Initial Mercurial check in.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/samer/maths/random/Exponential.java	Tue Jan 17 17:50:20 2012 +0000
@@ -0,0 +1,21 @@
+/*
+ *	Copyright (c) 2000, Samer Abdallah, King's College London.
+ *	All rights reserved.
+ *
+ *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
+ *	without even the implied warranty of MERCHANTABILITY or 
+ *	FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+package samer.maths.random;
+
+public class Exponential extends BaseRandom
+{
+	public double next()
+	{ 
+		double x;
+		do { x=rnd.nextDouble(); } while (x==0.0);
+		return -Math.log(x); 
+	}
+	public String toString() { return "Exponential"; }
+}