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Simple counting with number 0.07 ?

Bertas

Hi guys, I have one question, maybe I do something wrong or I don't wake up properly today :) but I can't find an answer why this happen.

I will make it simple .... its just counting in CIW

for number 0.07

x=(0.07/(2*0.005))  => 7.0 

y=truncate(x) => 7 (integer number)

z=x-y =>  I would expect 0 but system give me 8.881784e-16

When I put any other number like like 0.09 or 0.08  .... 2.0 atc always get expected result 0

Why is that ?

Robert

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