def crossover

unified-nsga-iii@0.2.2.0 · sbx.bend:234

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
import unified-nsga-iii@0.2.2.0/util.bend as Util

234def crossover(
235  +op: Sbx,
236  +p1: Ind.Individual,
237  +p2: Ind.Individual,
238  +box: Bounds.Box,
239  rng: Rng.State
240) -> Rng.State & Ind.Individual & Ind.Individual:
241  +x1s = Ind.variables(p1)
242  +x2s = Ind.variables(p2)
243  +m = Bounds.n_obj(box)
244  +prob = probability(op)
245  draw_or_copy(
246    eta(op),
247    prob,
248    x1s,
249    x2s,
250    box,
251    rng,
252    m,
253    Bounds.n_var(box),
254    Util.f32_is_zero(prob)
255  )