Hi all

I know about this gotcha -

x = 1.1 + 2.2
x
3.3000000000000003

According to the docs, the reason is that "numbers like 1.1 and 2.2 do not have exact representations in binary floating point."

So when I do this -

y = 3.3
y
3.3

what exactly is happening? What is 'y' at this point?

Or if I do this -

z = (1.1 + 2.2) * 10 / 10
z
3.3

What makes it different from the first example?

Thanks

Frank Millman



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