0.5*EPS() returns the "unit round"; this value is interesting because it is the largest number x where (1+x)-1=0 (due to roundoff errors).
0, 5* EPS () jout de "ôfrûningsienheid", dizze wearde is nijsgjirrich, want it is de grutste wearde x wêrfoar (1+x) - 1=0 is (fanwege ôfrûningsfouten).