Numbering_dh.h

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#ifndef NUMBERING_DH_H
#define NUMBERING_DH_H
 
 
/* code and algorithms in this class adopted from Edmond Chow's
   ParaSails
*/
 
 
#include "euclid_common.h"
 
#ifdef __cplusplus
extern "C"
{
#endif
 
  struct _numbering_dh
  {
    int size;           /* max number of indices that can be stored;
                   (length of idx_ext[]) 
                 */
    int first;          /* global number of 1st local index (row) */
    int m;          /* number of local indices (number of local rows in mat) */
    int *idx_ext;       /* sorted list of external indices */
    int *idx_extLo;     /* sorted list of external indices that are < first */
    int *idx_extHi;     /* sorted list of external indices that are >= first+m */
    int num_ext;        /* number of external (non-local) indices = num_extLo+num_extHi */
    int num_extLo;      /* number of external indices < first */
    int num_extHi;      /* number of external indices >= first+num_loc */
    Hash_i_dh global_to_local;
 
    bool debug;
  };
 
  extern void Numbering_dhCreate (Numbering_dh * numb);
  extern void Numbering_dhDestroy (Numbering_dh numb);
 
  /* must be called before calling Numbering_dhGlobalToLocal() or
     Numbering_dhLocalToGlobal().
   */
  extern void Numbering_dhSetup (Numbering_dh numb, Mat_dh mat);
 
 
  /* input: global_in[len], which contains global row numbers.
     output: local_out[len], containing corresponding local numbers.
     note: global_in[] and local_out[] may be identical.
   */
  extern void Numbering_dhGlobalToLocal (Numbering_dh numb, int len,
                     int *global_in, int *local_out);
 
#ifdef __cplusplus
}
#endif
#endif