BendMlAutograd.nfwd: def of bend-ml-autograd@0.1.1.0
Import: import bend-ml-autograd@0.1.1.0/main.bend as BendMlAutograd
Lines 41-51 of bend-ml-autograd@0.1.1.0/main.bend: https://jend.leeeet.dev/read.txt?path=bend-ml-autograd@0.1.1.0/main.bend&start_line=41&end_line=51

import Base

# FORWARD-mode derivative (dual numbers): derivative of the sum and the product rule
def nfwd(e: NE, +x: Nat) -> Nat:
  match e:
    case NCst{n}:
      0n
    case NX{}:
      1n
    case NAdd{a, b}:
      Nat.add(nfwd(a, x), nfwd(b, x))
    case NMul{+a, +b}:
      Nat.add(Nat.mul(nfwd(a, x), nval(b, x)), Nat.mul(nval(a, x), nfwd(b, x)))

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.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mul
  https://jend.leeeet.dev/definition.txt?path=bend-ml-autograd@0.1.1.0/main.bend&name=NE
  https://jend.leeeet.dev/definition.txt?path=bend-ml-autograd@0.1.1.0/main.bend&name=nval