THIS FILE IS SYNCHRONIZED WITH MATHLIB4. Any changes to this file require a corresponding PR to mathlib4. Lemmas about
size.
shiftl and shiftr #
        size #
        @[simp]
    
theorem
nat.size_shiftl'
    {b : bool}
    {m n : ℕ}
    (h : nat.shiftl' b m n ≠ 0) :
(nat.shiftl' b m n).size = m.size + n