law cnt1
import lawful-bytes@0.1.1.0/proof_fast_append.bend as ProofFastAppendimport Base
1168# The word count (np + 3) >> 2 covers np bytes with less than one word left.
1169law cnt1:
1170 for +np: Nat
1171 {Nat.is_le(np, Nat.mul(Nat.div(Nat.add(np, 3n), 4n), 4n)) == True{} : Bool}