static JSlider jLiveValueSlider_double_bothWays(double min, double max, IVarWithNotify<Double> lv) {
  new AtomicInt changing;
  JSlider slider = liveSliderZeroToOne((float) ((unnull(lv!)-min)/(max-min)), voidfunc(float f) {
    if (changing! == 0)
      lv.set(min+f*(max-min));
  });
  bindLiveValueListenerToComponent(slider, lv, r {
    temp tempIncAtomicInt(changing);
    setRelativeSliderValue(slider, (unnull(lv!)-min)/(max-min));
  });
  ret slider;
}

Began life as a copy of #1026708