def u32_xx
import bend-osdev-crypto@0.1.0.0/PROOF.bend as PROOFimport Base
125def u32_xx(a: U32, b: U32) -> {a == U32.xor(U32.xor(a, b), b) : U32}:
126 match a b:
127 case U32{x} U32{y}:
128 %word_xx(32n, x, y) : {U32{x} == U32{_} : U32}
129 {==}