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Turun , 3 months ago 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
The example is wrong, because they used 1.0.
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.
x-x
0
Nan
infinity
0.0
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
x1 = a - b - c
x2 = a - c - b
x1 - x2 == 0.0