def P0
import lawful-bytes@0.1.1.0/proof_fast_word.bend as ProofFastWordimport Base
import lawful-bytes@0.1.1.0/defs.bend as D
import lawful-bytes@0.1.1.0/proof_core.bend as C
17# The place of the first zero byte of v (4 when there is none).
18def P0(+v: U32) -> Nat:
19 D.run_len(C.L4(v), 0)