fact: Definition add_w16_into_checksum (w16: W16) (checksum: W16) := checksum ^1+ w16.
imports: Fiat.Common.Coq__8_4__8_5__Compat List Bedrock.Word Coq.ZArith.ZArith Coq.micromega.Psatz NArith NArithRing ZArith ZArithRing Program Coq.micromega.Psatz