def cs_eta

bend-collections-laws-crypto@1.0.0.0 · proofs/crypto/curve25519/freeze.bend:71

import Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/curve25519/field.bend as F
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/curve25519/limbs.bend as LM

71def cs_eta(+r: F.Cr, +x: List<&2, U32>) -> {F.csub_fin(r, x) == F.select(LM.cc(r), x, LM.cl(r)) : List<&2, U32>}:
72  match r:
73    case F.Cr{a, c}:
74      {==}