Limbs.reduce: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/crypto/secp256k1/limbs.bend as Limbs
Lines 155-160 of bend-collections@1.0.0.0/src/crypto/secp256k1/limbs.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/limbs.bend&start_line=155&end_line=160

import Base

# x mod m for x below 2^512, in k folds (x is looked at first, so that the
# proof checker keeps an unknown reduction folded)
def reduce(+c: List<&2, Nat>, k: Nat, xs: List<&2, Nat>) -> List<&2, Nat>:
  match xs:
    case Nil{}: reduce_go(c, k, Nil{})
    case x <> t: reduce_go(c, k, x <> 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=bend-collections@1.0.0.0/src/crypto/secp256k1/limbs.bend&name=reduce_go