Permutation.rotate_nonzero: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/spec/crypto/keccak/permutation.bend as Permutation
Lines 17-20 of bend-collections@1.0.0.0/spec/crypto/keccak/permutation.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/spec/crypto/keccak/permutation.bend&start_line=17&end_line=20

import Base
import bend-collections@1.0.0.0/src/crypto/keccak/types.bend as T

def rotate_nonzero(lo: U32, hi: U32, +n: Nat, b: Bool) -> T.Lane:
  match b:
    case True{}: rotate_small(lo,hi,n)
    case False{}: rotate_small(hi,lo,Nat.sub(n,32n))

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.sub
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/spec/crypto/keccak/permutation.bend&name=rotate_small
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/keccak/types.bend&name=Lane