Fixed logarithmic model.

src/de/tud/kom/p2psim/impl/topology/views/fiveg/models/LogarithmicModel.java

@@ -59,7 +59,7 @@ public class LogarithmicModel extends AbstractModel {
 
 	@Override
 	public double getDouble(int users) {
-		double tmp = this.a * Math.log(this.c * users + this.d) + this.b; 
+		double tmp = this.a * Math.log(this.c * (users - this.d)) + this.b; 
 		if(tmp < 0) {
 			return 0;
 		} else {
@@ -69,7 +69,7 @@ public class LogarithmicModel extends AbstractModel {
 	
 	@Override
 	public String toString() {
-		return "Logarithmic Model: log(u) = " + this.a + " * ln(" + this.c + " * u + " + this.d + ") + " + this.b;
+		return "Logarithmic Model: log(u) = " + this.a + " * ln(" + this.c + " * (u - " + this.d + ")) + " + this.b;
 	}
 
 }