Chacha.add_words: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/spec/crypto/chacha.bend as Chacha
Lines 106-109 of bend-collections@1.0.0.0/spec/crypto/chacha.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/spec/crypto/chacha.bend&start_line=106&end_line=109

import Base

def add_words(xs: List<&2, U32>, ys: List<&2, U32>) -> List<&2, U32>:
  match xs ys:
    case x <> xt y <> yt: U32.add(x, y) <> add_words(xt, yt)
    case _ _: Nil{}

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add