void SetupLevel(int level, const BoxArray &ba, const DistributionMapping &dm,
                const function<string()> &why) {

void SetupLevel(const int level, const BoxArray &ba,
                const DistributionMapping &dm, const function<string()> &why) {

  const int timereffact = use_subcycling_wip ? 2 : 1;
  if (level == 0) {
    // We are creating the coarsest level
    leveldata.iteration = 0;
    leveldata.delta_iteration = leveldata.coarse_delta_iteration;
    leveldata.time = 0.0;
    leveldata.delta_time = 1.0;
  } else {
    // We are creating a new refined level
    auto &coarseleveldata = ghext->leveldata.at(level - 1);
    leveldata.iteration = coarseleveldata.iteration;
    assert(coarseleveldata.delta_iteration % timereffact == 0);
    leveldata.delta_iteration = coarseleveldata.delta_iteration / timereffact;
    leveldata.time = coarseleveldata.time;
    leveldata.delta_time = coarseleveldata.delta_time / timereffact;

  if (use_subcycling_wip) {
    const int timereffact = use_subcycling_wip ? 2 : 1;
    if (level == 0) {
      // We are creating the coarsest level
      leveldata.is_subcycling_level = false; // unused
      leveldata.iteration = 0;
      leveldata.delta_iteration = leveldata.coarse_delta_iteration;
      leveldata.time = 0.0;
      leveldata.delta_time = 1.0;
    } else {
      // We are creating a new refined level
      auto &coarseleveldata = ghext->leveldata.at(level - 1);
      leveldata.iteration = coarseleveldata.iteration;
      assert(coarseleveldata.delta_iteration % timereffact == 0);
      leveldata.delta_iteration = coarseleveldata.delta_iteration / timereffact;
      leveldata.time = coarseleveldata.time;
      leveldata.delta_time = coarseleveldata.delta_time / timereffact;
    }

void CactusAmrCore::MakeNewLevelFromCoarse(int level, Real time,

void CactusAmrCore::MakeNewLevelFromCoarse(const int level, const Real time,

  assert(!use_subcycling_wip);

  assert(!use_subcycling_wip);

void CactusAmrCore::RemakeLevel(int level, Real time, const BoxArray &ba,

void CactusAmrCore::RemakeLevel(const int level, const Real time,
                                const BoxArray &ba,

  assert(!use_subcycling_wip);

void CactusAmrCore::ClearLevel(int level) {

void CactusAmrCore::ClearLevel(const int level) {

  // assert(level == int(ghext->leveldata.size()) - 1);

  // note: several levels can be removed at once

    // Iteration and time at which this level is valid

    // This level uses subcycling with respect to the next coarser
    // level. (Ignored for the coarsest level.)
    bool is_subcycling_level;
    // Iteration and time at which this cycle level is valid