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#include <assert.h>
#include <stdlib.h>

#include "cctk.h"

#include "ggf.hh"
#include "gh.hh"

#include "carpet.hh"

extern "C" {
  static const char* rcsid = "$Header: /home/eschnett/C/carpet/Carpet/Carpet/Carpet/src/Cycle.cc,v 1.17 2004/03/23 19:30:14 schnetter Exp $";
  CCTK_FILEVERSION(Carpet_Carpet_Cycle_cc);
}



namespace Carpet {
  
  using namespace std;
  
  
  
  void CycleTimeLevels (const cGH* cgh)
  {
    Checkpoint ("CycleTimeLevels");
    assert (is_level_mode());
    
    for (int group=0; group<CCTK_NumGroups(); ++group) {
      assert (group<(int)arrdata.size());
      if (CCTK_QueryGroupStorageI(cgh, group)) {
        switch (CCTK_GroupTypeI(group)) {
          
        case CCTK_GF:
          assert (reflevel>=0 && reflevel<reflevels);
          for (int var=0; var<CCTK_NumVarsInGroupI(group); ++var) {
            for (int m=0; m<maps; ++m) {
              assert (m<(int)arrdata.at(group).size());
              assert (var<(int)arrdata.at(group).at(m).data.size());
              for (int c=0; c<arrdata.at(group).at(m).hh->components(reflevel); ++c) {
                arrdata.at(group).at(m).data.at(var)->cycle (reflevel, c, mglevel);
              }
            }
          }
          break;
          
        case CCTK_SCALAR:
        case CCTK_ARRAY:
          if (do_global_mode) {
            for (int var=0; var<CCTK_NumVarsInGroupI(group); ++var) {
              assert (var<(int)arrdata.at(group).at(0).data.size());
              for (int c=0; c<arrdata.at(group).at(0).hh->components(0); ++c) {
                arrdata.at(group).at(0).data.at(var)->cycle (0, c, mglevel);
              }
            }
          }
          break;
          
        default:
          assert (0);
        } // switch grouptype
      } // if storage
    } // for group
  }
  
  
  
  void FlipTimeLevels (const cGH* cgh)
  {
    Checkpoint ("FlipTimeLevels");
    assert (is_level_mode());
    
    for (int group=0; group<CCTK_NumGroups(); ++group) {
      assert (group<(int)arrdata.size());
      if (CCTK_QueryGroupStorageI(cgh, group)) {
        const int num_vars = CCTK_NumVarsInGroupI(group);
        if (num_vars>0) {
          const int var0 = CCTK_FirstVarIndexI(group);
          assert (var0>=0);
          const int num_tl = CCTK_NumTimeLevelsFromVarI(var0);
          switch (num_tl) {
          case 1:
            // Do nothing
            break;
          case 3:
            // Flip
            switch (CCTK_GroupTypeI(group)) {
              
            case CCTK_GF:
              for (int m=0; m<(int)arrdata.at(group).size(); ++m) {
                for (int var=0; var<CCTK_NumVarsInGroupI(group); ++var) {
                  assert (var<(int)arrdata.at(group).at(m).data.size());
                  for (int c=0; c<arrdata.at(group).at(m).hh->components(reflevel); ++c) {
                    arrdata.at(group).at(m).data.at(var)->flip (reflevel, c, mglevel);
                  }
                }
              }
              break;
              
            case CCTK_SCALAR:
            case CCTK_ARRAY:
              if (do_global_mode) {
                for (int var=0; var<CCTK_NumVarsInGroupI(group); ++var) {
                  assert (var<(int)arrdata.at(group).at(0).data.size());
                  for (int c=0; c<arrdata.at(group).at(0).hh->components(0); ++c) {
                    arrdata.at(group).at(0).data.at(var)->flip (0, c, mglevel);
                  }
                }
              }
              break;
              
            default:
              assert (0);
            } // switch grouptype
            break;
            
          default:
            // Error
            assert (0);
          } // switch num_tl
          
        } // if num_vars>0
      } // if storage
    } // for group
  }
  
} // namespace Carpet