def parent_out
import bend-collections@1.0.0.0/src/crypto/blake/blake3/blake3.bend as Blake3import Base
import bend-collections@1.0.0.0/src/crypto/blake/blake3/types.bend as T
148def parent_out(l: T.CV, r: T.CV) -> T.Out:
149 T.Out{iv(),parent_block(l,r),0,64,4}