def cnt.d19
import bend-osdev-acpi@0.1.1.0/PROOF.bend as PROOFimport Base
import bend-osdev-bytes@0.1.1.0/bytes.bend as B
1833def cnt.d19(+k: Nat, +lt: {Nat.is_lt(Nat.add(19n, k), 256n) == True{} : Bool}) -> {U32.to_nat(B.byte(U32.from_nat(Nat.add(19n, k)))) == Nat.add(19n, k) : Nat}:
1834 match k:
1835 case 0n:
1836 {==}
1837 case 1n+p:
1838 cnt.d20(p, lt)