PolynomialMutation.deltaq.lo: def of unified-nsga-iii@0.2.2.0
Import: import unified-nsga-iii@0.2.2.0/polynomial_mutation.bend as PolynomialMutation
Lines 40-46 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=40&end_line=46

import Base

def deltaq.lo(+eta: F32, +mut_pow: F32, +delta1: F32, +rand: F32) -> F32:
  +xy = F32.sub(1.0, delta1)
  +val = F32.add(
    F32.mul(2.0, rand),
    F32.mul(F32.sub(1.0, F32.mul(2.0, rand)), F32.pow(xy, F32.add(eta, 1.0)))
  )
  F32.sub(F32.pow(val, mut_pow), 1.0)

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.pow
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.sub