rfl
f : Bool → Bool → Bool
m n : Nat
hm : ¬m = 0
this✝ : m > 0
this : m / 2 < m
⊢ (if n = 0 then if flip f true false = true then m else 0
    else
      if flip f (decide (m % 2 = 1)) (decide (n % 2 = 1)) = true then
        bitwise f (n / 2) (m / 2) + bitwise f (n / 2) (m / 2) + 1
      else bitwise f (n / 2) (m / 2) + bitwise f (n / 2) (m / 2)) =
    if n = 0 then if f false true = true then m else 0
    else
      if f (decide (n % 2 = 1)) (decide (m % 2 = 1)) = true then
        bitwise f (n / 2) (m / 2) + bitwise f (n / 2) (m / 2) + 1
      else bitwise f (n / 2) (m / 2) + bitwise f (n / 2) (m / 2)
no goals