1  &fras ⊣ &args
2  
3  Digits    ← "=-012"
4  ToSnafu   ← ⊏⊙Digits [◌⍢(⌊⊃÷◿5+2|>0)]
5  FromSnafu ← ∧(+×5:)⊙0 -2⊗⊙Digits
6  
7  &p ToSnafu /+ ⊜FromSnafu≠@\n.