conv => rhs; change (bitwise bne (bitwise and l n) (bitwise and m n)).getBit i
case a
l m n i : Nat
⊢ getBit (bitwise and (bitwise bne l m) n) i = getBit (l &&& n ^^^ m &&& n) i
case a
l m n i : Nat
⊢ getBit (bitwise and (bitwise bne l m) n) i = getBit (bitwise bne (bitwise and l n) (bitwise and m n)) i