Why (0.1 + 0.2 - 0.3) is 5.55111512313e-17?

Asked

Viewed 31 times

1

It seems pretty obvious to us humans that 0.1 + 0.2 - 0.3 is 0 but why when I ask the Python interpreter to perform the following operation:

print(0.1 + 0.2 - 0.3)

he returns 5.55111512313e-17?

It’s something to do with the precision of floats?

python float architecture-computers
  • 2

    You have a number of questions/answers here about this: https://answall.com/questions/5642, https://answall.com/questions/219211 , https://answall.com/questions/38138 ...

  • 1

    Related: Why in Python 0.03 % 0.01 = 0.009999999999998 and not 0?

  • 2

    Thanks @Miguel, I was in doubt if closed as duplicate, but there are several examples here talking about the IEEE 754.

No answers

Browser other questions tagged python float architecture-computers

You are not signed in. Login or sign up in order to post.