/[escript]/trunk/paso/src/SystemMatrix.h
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Annotation of /trunk/paso/src/SystemMatrix.h

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Revision 412 - (hide annotations)
Tue Jan 3 00:41:56 2006 UTC (14 years, 1 month ago) by gross
File MIME type: text/plain
File size: 3455 byte(s)
nicer wahy of representing the natrix format is introduced
1 jgs 150 /* $Id$ */
2    
3     /**************************************************************/
4    
5     /* Paso: SystemMatrix and SystemVector */
6    
7     /**************************************************************/
8    
9 gross 412 /* Copyrights by ACcESS Australia 2003,2004,2005,2006 */
10 jgs 150 /* Author: gross@access.edu.au */
11    
12     /**************************************************************/
13    
14     #ifndef INC_PASO_SYSTEM
15     #define INC_PASO_SYSTEM
16    
17     #include "Common.h"
18     #include "SystemMatrixPattern.h"
19     #include "Options.h"
20    
21     /**************************************************************/
22    
23     /* this struct holds a stiffness matrix: */
24    
25 gross 412 #define FORMAT_CSR 1
26     #define FORMAT_SYM 2
27     #define FORMAT_BLK1 4
28     #define FORMAT_INDEX1 8
29    
30 jgs 150 /* matrix type */
31     #define CSC 0
32 gross 412 #define CSR FORMAT_CSR
33 jgs 150 /* these formats are used in the SCSL context */
34 gross 412 #define CSC_SYM FORMAT_SYM
35     #define CSR_SYM (FORMAT_CSR+FORMAT_SYM)
36     #define CSC_BLK1 FORMAT_BLK1
37     #define CSR_BLK1 (FORMAT_CSR+FORMAT_BLK1)
38     #define CSC_BLK1_SYM (FORMAT_BLK1+FORMAT_SYM)
39     #define CSR_BLK1_SYM (FORMAT_CSR+FORMAT_BLK1+FORMAT_SYM)
40 jgs 150
41     typedef int Paso_SystemMatrixType;
42    
43     typedef struct Paso_SystemMatrix {
44     Paso_SystemMatrixType type;
45     dim_t reference_counter;
46    
47     dim_t logical_row_block_size;
48     dim_t logical_col_block_size;
49     dim_t logical_block_size;
50    
51     dim_t row_block_size;
52     dim_t col_block_size;
53     dim_t block_size;
54    
55     dim_t num_rows;
56     dim_t num_cols;
57    
58     Paso_SystemMatrixPattern* pattern;
59    
60     dim_t len;
61     double *val;
62    
63     double *normalizer; /* vector with a inverse of the absolute row/col sum (set by Solver.c)*/
64     bool_t normalizer_is_valid;
65     void* direct; /* pointer to data needed by the direct solver */
66     void* iterative; /* pointer to data needed by the iterative solver */
67    
68     } Paso_SystemMatrix;
69    
70     /* interfaces: */
71    
72     Paso_SystemMatrix* Paso_SystemMatrix_alloc(Paso_SystemMatrixType,Paso_SystemMatrixPattern*,dim_t,dim_t);
73     Paso_SystemMatrix* Paso_SystemMatrix_reference(Paso_SystemMatrix*);
74     void Paso_SystemMatrix_dealloc(Paso_SystemMatrix*);
75    
76     void Paso_SystemMatrix_setValues(Paso_SystemMatrix*,double);
77     void Paso_SystemMatrix_copy(Paso_SystemMatrix*,double*);
78     void Paso_SystemMatrix_add(Paso_SystemMatrix*,dim_t,index_t*, dim_t,dim_t,index_t*,dim_t, double*);
79     void Paso_SystemMatrix_MatrixVector(double alpha, Paso_SystemMatrix* A, double* in, double beta, double* out);
80    
81     void Paso_SystemMatrix_saveMM(Paso_SystemMatrix *, char *);
82     void Paso_SystemMatrix_saveHB(Paso_SystemMatrix *, char *);
83     Paso_SystemMatrix* Paso_SystemMatrix_loadMM_toCSR(char *);
84     void Paso_SystemMatrix_nullifyRowsAndCols(Paso_SystemMatrix* A, double* mask_row, double* mask_col, double main_diagonal_value);
85     void Paso_SystemMatrix_setDefaults(Paso_Options*);
86     int Paso_SystemMatrix_getSystemMatrixTypeId(index_t solver, index_t package, bool_t symmetry);
87     Paso_SystemMatrix* Paso_SystemMatrix_getSubmatrix(Paso_SystemMatrix* A,dim_t,index_t*,index_t*);
88     double* Paso_SystemMatrix_borrowNormalization(Paso_SystemMatrix* A);
89    
90     #endif /* #ifndef INC_PASO_SYSTEM */
91    
92     /*
93     * $Log$
94     * Revision 1.2 2005/09/15 03:44:38 jgs
95     * Merge of development branch dev-02 back to main trunk on 2005-09-15
96     *
97     * Revision 1.1.2.2 2005/09/07 00:59:08 gross
98     * some inconsistent renaming fixed to make the linking work.
99     *
100     * Revision 1.1.2.1 2005/09/05 06:29:47 gross
101     * These files have been extracted from finley to define a stand alone libray for iterative
102     * linear solvers on the ALTIX. main entry through Paso_solve. this version compiles but
103     * has not been tested yet.
104     *
105     *
106     */

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