PolynomialMutation.start_or_copy: def of unified-nsga-iii@0.2.2.0
Import: import unified-nsga-iii@0.2.2.0/polynomial_mutation.bend as PolynomialMutation
Lines 163-178 of unified-nsga-iii@0.2.2.0/polynomial_mutation.bend: https://jend.leeeet.dev/read.txt?path=unified-nsga-iii@0.2.2.0/polynomial_mutation.bend&start_line=163&end_line=178

import Base
import unified-nsga-iii@0.2.2.0/individual.bend as Ind
import unified-nsga-iii@0.2.2.0/bounds.bend as Bounds
import unified-nsga-iii@0.2.2.0/rng.bend as Rng

# p=0 leaves the decision vector unchanged before any NextDouble.
# Matches C# when per-variable probability is 0 (every draw is > 0).
def start_or_copy(
  +eta: F32,
  +box: Bounds.Box,
  rng: Rng.State,
  ind: Ind.Individual,
  +p: F32,
  n: Nat,
  zero: Bool
) -> Rng.State & Ind.Individual:
  match zero:
    case True{}:
      (rng, ind)
    case False{}:
      start(eta, box, rng, ind, p, n)

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=unified-nsga-iii@0.2.2.0/bounds.bend&name=Box
  https://jend.leeeet.dev/definition.txt?path=unified-nsga-iii@0.2.2.0/individual.bend&name=Individual
  https://jend.leeeet.dev/definition.txt?path=unified-nsga-iii@0.2.2.0/polynomial_mutation.bend&name=start
  https://jend.leeeet.dev/definition.txt?path=unified-nsga-iii@0.2.2.0/rng.bend&name=State