Possible bug in function getX()

[s6mahahn]

The following part is only accessible when x = 0. This should result in an error, right? Because you cant divide by 0. So either this part is useless oder will give an error at some point. Maybe you could look into that.

if(x == 0){
        double ar = ((rm1 - r1 + r - rm) + (rm - r) / x) / (x - 1);
	double as = ((sm1 - s1 + s - sm) + (sm - s) / x) / (x - 1);
	if(as > 0 | ar < 0){
		//let's assume straight lines again...
		double cr = (rm - r) / (r1 - r + rm - rm1);
		double cs = (sm - s) / (s1 -s + sm - sm1);
		x = (cr + cs) / 2; 
	}
}

I hope I am not completly stupid and looked over something.