Lane.rol2: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/src/crypto/keccak/lane.bend as Lane
Lines 40-43 of bend-collections-laws-crypto@1.0.0.0/src/crypto/keccak/lane.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/keccak/lane.bend&start_line=40&end_line=43

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

def rol2(a: T.Lane) -> T.Lane:
  match a:
    case T.W{+lo,+hi}:
      T.W{U32.or(U32.shln(lo,2n),U32.shrn(hi,30n)),U32.or(U32.shln(hi,2n),U32.shrn(lo,30n))}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shln
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shrn
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/keccak/types.bend&name=Lane