Deadzone Programming

[Arrowhead]

I looked around a bit but couldn't find any resources on this for c++
How do you program in a deadzone for a attack 3 joystick?
I wrote this code but it doesn't seem to be working.

	void driving(){
		double y;           //variable for forward/backward movement
		double x;           //variable for side to side movement
		double turn;        //variable for turning movement
		if(driverStick.GetY()>0.3||driverStick.GetY()<-0.3){
			y=driverStick.GetY();
		}
		if(driverStick.GetX()>0.3||driverStick.GetX()<-0.3){
			x=driverStick.GetX();
			}
		if(driverStick2.GetX()>0.3||driverStick2.GetX()<-0.3){
			turn=driverStick2.GetX();
			}