/[escript]/trunk/paso/src/SystemMatrix_saveMM.c
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Contents of /trunk/paso/src/SystemMatrix_saveMM.c

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Revision 415 - (show annotations)
Wed Jan 4 05:37:33 2006 UTC (14 years, 1 month ago) by gross
File MIME type: text/plain
File size: 2970 byte(s)
a better way of representing the matrix format type is introduced. this is needed for the Paradiso and UMFPACK interface
1 /* $Id$ */
2
3 /**************************************************************/
4
5 /* Paso: SystemMatrix is saved to Matrix Market format */
6
7 /**************************************************************/
8
9 /* Copyrights by ACcESS Australia 2003,2004 */
10 /* Author: davies@access.edu.au */
11
12 /**************************************************************/
13
14 #include "Paso.h"
15 #include "mmio.h"
16 #include "SystemMatrix.h"
17
18 void Paso_SystemMatrix_saveMM(Paso_SystemMatrix * A_p, char * fileName_p) {
19
20 int iRow, iCol, iPtr,ir,ic;
21 index_t index_offset=(A_p->type & MATRIX_FORMAT_OFFSET1 ? 1:0);
22
23 if (A_p->type & MATRIX_FORMAT_SYM) {
24 Paso_setError(TYPE_ERROR,"Paso_SystemMatrix_saveMM does not support symmetric storage scheme");
25 return;
26 }
27 /* open the file */
28 FILE * fileHandle_p = fopen(fileName_p, "w");
29 if (fileHandle_p==NULL) {
30 Paso_setError(IO_ERROR,"file could not be opened for writing");
31 return;
32 }
33
34 /* set the matrix code */
35 MM_typecode matrixCode;
36 mm_initialize_typecode(&matrixCode);
37 mm_set_matrix(&matrixCode);
38 mm_set_coordinate(&matrixCode);
39 mm_set_real(&matrixCode);
40
41 mm_write_banner(fileHandle_p, matrixCode);
42 mm_write_mtx_crd_size(fileHandle_p, A_p->num_rows*A_p->row_block_size, A_p->num_cols*A_p->col_block_size,A_p->len);
43
44 if (A_p->type & MATRIX_FORMAT_CSC) {
45 for (iCol = 0; iCol< A_p->pattern->n_ptr; iCol++) {
46 for (ic = 0; ic< A_p->col_block_size; ic++) {
47 for (iPtr = A_p->pattern->ptr[iCol] - index_offset;iPtr < A_p->pattern->ptr[iCol+1] - index_offset; iPtr++) {
48 for (ir = 0; ir< A_p->row_block_size; ir++) {
49 fprintf(fileHandle_p, "%12d %12d %e\n",
50 (A_p->pattern->index[iPtr]-index_offset)*A_p->row_block_size+ir+1,
51 iCol*A_p->col_block_size+ic+ 1,
52 A_p->val[iPtr*A_p->block_size+ir+A_p->row_block_size*ic]);
53 }
54 }
55 }
56 }
57 } else {
58 for (iRow = 0; iRow< A_p->pattern->n_ptr; iRow++) {
59 for (ir = 0; ir< A_p->row_block_size; ir++) {
60 for (iPtr = A_p->pattern->ptr[iRow] - index_offset;iPtr < A_p->pattern->ptr[iRow+1] - index_offset; iPtr++) {
61 for (ic = 0; ic< A_p->col_block_size; ic++) {
62 fprintf(fileHandle_p, "%12d %12d %e\n",
63 iRow*A_p->row_block_size+ir+ 1,
64 (A_p->pattern->index[iPtr]-index_offset)*A_p->col_block_size+ic+1,
65 A_p->val[iPtr*A_p->block_size+ir+A_p->row_block_size*ic]);
66 }
67 }
68 }
69 }
70 }
71
72 /* close the file */
73 fclose(fileHandle_p);
74
75 return;
76 }
77
78 /*
79 * $Log$
80 * Revision 1.2 2005/09/15 03:44:39 jgs
81 * Merge of development branch dev-02 back to main trunk on 2005-09-15
82 *
83 * Revision 1.1.2.1 2005/09/05 06:29:48 gross
84 * These files have been extracted from finley to define a stand alone libray for iterative
85 * linear solvers on the ALTIX. main entry through Paso_solve. this version compiles but
86 * has not been tested yet.
87 *
88 *
89 */

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