The example is wrong, because they used 1.0
.
But in general x-x
does not have to equal 0
, that is true. I'm pretty sure Nan
and infinity
would yield not 0.0
, but Nan
instead.
And if you reach x with two different calculations, e.g. x1 = a - b - c
and x2 = a - c - b
it is certainly not guaranteed that x1 - x2 == 0.0
Wenn sich Polen und Spanien auf eine Zeitzone einigen können.