From what I have seen the double bracket is the same as the floor function. So

`[[e]]=2` and `[[pi]]=3` so `2 - 3 = -1` which would be the answer.

From what I have seen the double bracket is the same as the floor function. So

`[[e]]=2` and `[[pi]]=3` so `2 - 3 = -1` which would be the answer.