Pick a number x between 0 and EPS(). Observe that 1+x rounds x to either 0 or EPS() by using the equation (1+x)-1
Dewiswch rhif x rhwng 0 ac EPS (). Gwylier bod 1+x yn talgrynnu x unai i 0 neu i EPS () gan ddefnyddio' r hafaliad (1+x) - 1.