def u32_xx2
import bend-osdev-cipher-core@0.1.0.0/PROOF.bend as PROOFimport Base
242def u32_xx2(a: U32, b: U32) -> {b == U32.xor(a, U32.xor(a, b)) : U32}:
243 match a b:
244 case U32{x} U32{y}:
245 %word_xx2(32n, x, y) : {U32{y} == U32{_} : U32}
246 {==}