/[escript]/trunk/paso/src/SparseMatrix_addAbsRow.c
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Annotation of /trunk/paso/src/SparseMatrix_addAbsRow.c

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Revision 3369 - (hide annotations)
Fri Nov 19 06:26:11 2010 UTC (10 years, 4 months ago) by gross
File MIME type: text/plain
File size: 2092 byte(s)
matrix balance introduced in paso
1 ksteube 1315
2     /*******************************************************
3 ksteube 1811 *
4 jfenwick 2881 * Copyright (c) 2003-2010 by University of Queensland
5 ksteube 1811 * Earth Systems Science Computational Center (ESSCC)
6     * http://www.uq.edu.au/esscc
7     *
8     * Primary Business: Queensland, Australia
9     * Licensed under the Open Software License version 3.0
10     * http://www.opensource.org/licenses/osl-3.0.php
11     *
12     *******************************************************/
13 ksteube 1315
14 ksteube 1811
15 ksteube 1315 /***************************************************************************/
16    
17     /* Paso: SparseMatrix: adds the absolut values of row entries to an array */
18    
19     /***************************************************************************/
20    
21 jfenwick 2608 /* Author: Lutz Gross, l.gross@uq.edu.au */
22 ksteube 1315
23     /**************************************************************/
24    
25     #include "Paso.h"
26     #include "SparseMatrix.h"
27    
28 gross 3369 void Paso_SparseMatrix_addAbsRow_CSR_OFFSET0(const Paso_SparseMatrix* A, double* array) {
29 phornby 1628 dim_t ir,irow,icb,irb;
30 ksteube 1315 index_t iptr;
31     register double fac;
32     #pragma omp parallel for private(ir,irb,irow,fac,iptr,icb) schedule(static)
33     for (ir=0;ir< A->pattern->numOutput;ir++) {
34     for (irb=0;irb< A->row_block_size;irb++) {
35     irow=irb+A->row_block_size*ir;
36     fac=0.;
37     for (iptr=A->pattern->ptr[ir];iptr<A->pattern->ptr[ir+1]; iptr++) {
38     for (icb=0;icb< A->col_block_size;icb++)
39     fac+=ABS(A->val[iptr*A->block_size+irb+A->row_block_size*icb]);
40     }
41     array[irow]+=fac;
42     }
43     }
44     }
45 gross 3369 void Paso_SparseMatrix_maxAbsRow_CSR_OFFSET0(const Paso_SparseMatrix* A, double* array) {
46     dim_t ir,irow,icb,irb;
47     index_t iptr;
48     register double fac;
49     #pragma omp parallel for private(ir,irb,irow,fac,iptr,icb) schedule(static)
50     for (ir=0;ir< A->pattern->numOutput;ir++) {
51     for (irb=0;irb< A->row_block_size;irb++) {
52     irow=irb+A->row_block_size*ir;
53     fac=0.;
54     for (iptr=A->pattern->ptr[ir];iptr<A->pattern->ptr[ir+1]; iptr++) {
55     for (icb=0;icb< A->col_block_size;icb++)
56     fac=MAX(fac,ABS(A->val[iptr*A->block_size+irb+A->row_block_size*icb]));
57     }
58     array[irow]+=fac;
59     }
60     }
61     }

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