3 ms·

I think it's parsed specially, but I could be wrong. Definitely no runtime check

• improbable22 6y ago
  It goes to `literal_pow`, one way to check is to overload this: Base.literal_pow(::typeof(^), x::Int, ::Val{n}) where {n} = (println("power $n"); float(x)^n) pow = -5 2^-5 # yes 2^pow # no, hence an error