Natural.PowMod.zero_modulus: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/spec/math/natural.bend as Natural
Lines 255-257 of bend-collections-laws-crypto@1.0.0.0/spec/math/natural.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/natural.bend&start_line=255&end_line=257

import Base
import bend-collections-laws-crypto@1.0.0.0/src/math/natural.bend as M

# PDF 8.7: pow(b, e, 0) raises ValueError; here ZeroDivision
def PowMod.zero_modulus(+b: Nat, +e: Nat) -> Type:
  {M.pow_mod(b, e, 0n) == Fail{M.ZeroDivision{}} : Result<&2, &2, M.MathError, Nat>}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/natural.bend&name=MathError
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/natural.bend&name=pow_mod