// http://floating-point-gui.de/errors/comparison/

	public static boolean nearlyEqual(float a, float b, float epsilon) {
		final float absA = Math.abs(a);
		final float absB = Math.abs(b);
		final float diff = Math.abs(a - b);

		if (a == b) { // shortcut, handles infinities
			return true;
		} else if (a == 0 || b == 0 || diff < Float.MIN_NORMAL) {
			// a or b is zero or both are extremely close to it
			// relative error is less meaningful here
			return diff < (epsilon * Float.MIN_NORMAL);
		} else { // use relative error
			return diff / (absA + absB) < epsilon;
		}
	}