code: public static double setDistanceEpsilon(double newPrecisionValue) {
  		if ((newPrecisionValue >= 1) || (newPrecisionValue <= 0)) {
  			throw new IllegalArgumentException();
  		}
  		final double old = distancePrecision;
  		distancePrecision = newPrecisionValue;
  		return old;
  	}
docs: Replies the precision used to test a distance value.
  
  @param newPrecisionValue the new precision value (in meters).
  @return the old precision value.