law take_prefix
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/poly1305/mac.bend as Macimport Base
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/poly1305.bend as R
import bend-collections-laws-crypto@1.0.0.0/src/crypto/poly1305/limbs.bend as Li
59law take_prefix:
60 for +n: Nat
61 for +xs: List<&2, U32>
62 {Li.take(n, xs) == R.prefix(n, xs) : List<&2, U32>}