Value.pos: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/poly1305/value.bend as Value
Lines 218-222 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/poly1305/value.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/poly1305/value.bend&start_line=218&end_line=222

import Base
import bend-collections-laws-crypto@1.0.0.0/spec/lib/common.bend as C

# y at limb position n: y * 2^(8n)
def pos(n: Nat, +y: Nat) -> Nat:
  match n:
    case 0n: y
    case 1n+k: C.shift(8n, pos(k, y))

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/lib/common.bend&name=shift