Natural.pow_mod: def of bend-collections-laws-math@1.0.0.0
Import: import bend-collections-laws-math@1.0.0.0/src/math/natural.bend as Natural
Lines 293-298 of bend-collections-laws-math@1.0.0.0/src/math/natural.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-math@1.0.0.0/src/math/natural.bend&start_line=293&end_line=298

import Base

def pow_mod(+b: Nat, +e: Nat, +m: Nat) -> Result<&2, &2, MathError, Nat>:
  match m:
    case 0n:
      Fail{ZeroDivision{}}
    case 1n+ +mp:
      Done{pow_mod_go(e, 1n+mp, e, Nat.mod(b, 1n+mp), Nat.mod(1n, 1n+mp))}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mod
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/natural.bend&name=MathError
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-math@1.0.0.0/src/math/natural.bend&name=pow_mod_go