BOOLEAN conservative_prolongation "Conservative prolongation"
{
} no

  switch ((indextype[0] << 2) | (indextype[1] << 1) | (indextype[2] << 0)) {

  if (!conservative_prolongation) {

  case 0b000:
    switch (prolongation_order) {
    case 1:
      return &prolongate_3d_rf2_c000_o1;
    }
    break;

    switch ((indextype[0] << 2) | (indextype[1] << 1) | (indextype[2] << 0)) {

  case 0b001:
    switch (prolongation_order) {
    case 1:
      return &prolongate_3d_rf2_c001_o1;
    }
    break;

    case 0b000:
      switch (prolongation_order) {
      case 1:
        return &prolongate_3d_rf2_c000_o1;
      }
      break;

  case 0b010:
    switch (prolongation_order) {
    case 1:
      return &prolongate_3d_rf2_c010_o1;
    }
    break;

    case 0b001:
      switch (prolongation_order) {
      case 1:
        return &prolongate_3d_rf2_c001_o1;
      }
      break;

  case 0b011:
    switch (prolongation_order) {
    case 1:
      return &prolongate_3d_rf2_c011_o1;
    }
    break;

    case 0b010:
      switch (prolongation_order) {
      case 1:
        return &prolongate_3d_rf2_c010_o1;
      }
      break;

  case 0b100:
    switch (prolongation_order) {
    case 1:
      return &prolongate_3d_rf2_c100_o1;
    }
    break;

    case 0b011:
      switch (prolongation_order) {
      case 1:
        return &prolongate_3d_rf2_c011_o1;
      }
      break;

  case 0b101:
    switch (prolongation_order) {
    case 1:
      return &prolongate_3d_rf2_c101_o1;
    }
    break;

    case 0b100:
      switch (prolongation_order) {
      case 1:
        return &prolongate_3d_rf2_c100_o1;
      }
      break;

  case 0b110:
    switch (prolongation_order) {
    case 1:
      return &prolongate_3d_rf2_c110_o1;

    case 0b101:
      switch (prolongation_order) {
      case 1:
        return &prolongate_3d_rf2_c101_o1;
      }
      break;
    case 0b110:
      switch (prolongation_order) {
      case 1:
        return &prolongate_3d_rf2_c110_o1;
      }
      break;
    case 0b111:
      switch (prolongation_order) {
      case 1:
        return &prolongate_3d_rf2_c111_o1;
      }
      break;

    break;

  case 0b111:
    switch (prolongation_order) {
    case 1:
      return &prolongate_3d_rf2_c111_o1;

  } else { // if conservative_prolongation
    switch ((indextype[0] << 2) | (indextype[1] << 1) | (indextype[2] << 0)) {
    case 0b000:
      switch (prolongation_order) {
      case 1:
        return &prolongate_cons_3d_rf2_c000_o0;
      }
      break;
    case 0b001:
      switch (prolongation_order) {
      case 1:
        return &prolongate_cons_3d_rf2_c001_o0;
      }
      break;
    case 0b010:
      switch (prolongation_order) {
      case 1:
        return &prolongate_cons_3d_rf2_c010_o0;
      }
      break;
    case 0b011:
      switch (prolongation_order) {
      case 1:
        return &prolongate_cons_3d_rf2_c011_o0;
      }
      break;
    case 0b100:
      switch (prolongation_order) {
      case 1:
        return &prolongate_cons_3d_rf2_c100_o0;
      }
      break;
    case 0b101:
      switch (prolongation_order) {
      case 1:
        return &prolongate_cons_3d_rf2_c101_o0;
      }
      break;
    case 0b110:
      switch (prolongation_order) {
      case 1:
        return &prolongate_cons_3d_rf2_c110_o0;
      }
      break;
    case 0b111:
      switch (prolongation_order) {
      case 1:
        return &prolongate_cons_3d_rf2_c111_o0;
      }
      break;

    break;
  }

  } // if conservative_prolongation