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Numbering_dh.h
1/*@HEADER
2// ***********************************************************************
3//
4// Ifpack: Object-Oriented Algebraic Preconditioner Package
5// Copyright (2002) Sandia Corporation
6//
7// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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11// modification, are permitted provided that the following conditions are
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40//@HEADER
41*/
42
43#ifndef NUMBERING_DH_H
44#define NUMBERING_DH_H
45
46
47/* code and algorithms in this class adopted from Edmond Chow's
48 ParaSails
49*/
50
51
52#include "euclid_common.h"
53
54#ifdef __cplusplus
55extern "C"
56{
57#endif
58
60 {
61 int size; /* max number of indices that can be stored;
62 (length of idx_ext[])
63 */
64 int first; /* global number of 1st local index (row) */
65 int m; /* number of local indices (number of local rows in mat) */
66 int *idx_ext; /* sorted list of external indices */
67 int *idx_extLo; /* sorted list of external indices that are < first */
68 int *idx_extHi; /* sorted list of external indices that are >= first+m */
69 int num_ext; /* number of external (non-local) indices = num_extLo+num_extHi */
70 int num_extLo; /* number of external indices < first */
71 int num_extHi; /* number of external indices >= first+num_loc */
72 Hash_i_dh global_to_local;
73
74 bool debug;
75 };
76
77 extern void Numbering_dhCreate (Numbering_dh * numb);
78 extern void Numbering_dhDestroy (Numbering_dh numb);
79
80 /* must be called before calling Numbering_dhGlobalToLocal() or
81 Numbering_dhLocalToGlobal().
82 */
83 extern void Numbering_dhSetup (Numbering_dh numb, Mat_dh mat);
84
85
86 /* input: global_in[len], which contains global row numbers.
87 output: local_out[len], containing corresponding local numbers.
88 note: global_in[] and local_out[] may be identical.
89 */
90 extern void Numbering_dhGlobalToLocal (Numbering_dh numb, int len,
91 int *global_in, int *local_out);
92
93#ifdef __cplusplus
94}
95#endif
96#endif