For example:
In: -0.01 + (-0.02) + (-0.4) + (-0.05)
Out: -0.48000000000000004
Instead of -0.48
Why does it happen so? And how to avoid such situations?
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You have encoutered the downsides of float arithemtic: https://stackoverflow.com/questions/588004/is-floating-point-math-broken – Olivier Melançon Mar 06 '18 at 15:33