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Why does 99.99 / 100 = 0.9998999999999999
Dealing with accuracy problems in floating-point numbers
I’ve seen this issue in php and javascript. I have this number: float 0.699
if I do this:
0.699 x 100 = 69.89999999999999
why?
edit
round(0.699 x 10, 2): float 69.90000000000001
Floating point arithmetic is not exact.
See Floating point on Wikipedia for a deeper discussion of the problem.