Authenc.ad.au.fit: def of bend-osdev-aead@0.1.0.0
Import: import bend-osdev-aead@0.1.0.0/authenc.bend as Authenc
Lines 49-59 of bend-osdev-aead@0.1.0.0/authenc.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-aead@0.1.0.0/authenc.bend&start_line=49&end_line=59

import Base

# the first n bytes of xs, zero-padded to n
def ad.au.fit(n: Nat, xs: List<&2, U32>) -> List<&2, U32>:
  match n:
    case 0n:
      Nil{}
    case 1n+m:
      match xs:
        case Nil{}:
          Con{0, ad.au.fit(m, Nil{})}
        case Con{h, t}:
          Con{h, ad.au.fit(m, t)}

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=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32