/[escript]/trunk/escript/src/AbstractSystemMatrix.cpp
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Contents of /trunk/escript/src/AbstractSystemMatrix.cpp

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Revision 480 - (show annotations)
Wed Feb 1 05:15:12 2006 UTC (13 years, 7 months ago) by jgs
File size: 4182 byte(s)
rationalise #includes and forward declarations

1 // $Id$
2 /*
3 ******************************************************************************
4 * *
5 * COPYRIGHT ACcESS 2004 - All Rights Reserved *
6 * *
7 * This software is the property of ACcESS. No part of this code *
8 * may be copied in any form or by any means without the expressed written *
9 * consent of ACcESS. Copying, use or modification of this software *
10 * by any unauthorised person is illegal unless that person has a software *
11 * license agreement with ACcESS. *
12 * *
13 ******************************************************************************
14 */
15
16 #include "AbstractSystemMatrix.h"
17 #include "DataException.h"
18 #include "DataArrayView.h"
19 #include "Data.h"
20
21 namespace escript {
22
23 AbstractSystemMatrix::AbstractSystemMatrix() {
24 //std::cout << "Called default AbstractSystemMatrix constructor" << std::endl;
25 m_empty=1;
26 }
27
28 AbstractSystemMatrix::AbstractSystemMatrix(const int row_blocksize,
29 const FunctionSpace& row_functionspace,
30 const int column_blocksize,
31 const FunctionSpace& column_functionspace)
32 {
33 if (row_blocksize<=0)
34 throw DataException("Error - negative row block size of system matrix.");
35 if (column_blocksize<=0)
36 throw DataException("Error - negative column block size of system matrix.");
37
38 m_empty=0;
39 m_row_blocksize=row_blocksize;
40 m_column_blocksize=column_blocksize;
41 m_row_functionspace=row_functionspace;
42 m_column_functionspace=column_functionspace;
43 }
44
45 AbstractSystemMatrix::~AbstractSystemMatrix() {
46 }
47
48 int AbstractSystemMatrix::isEmpty() const {
49 return m_empty;
50 }
51
52 Data operator*(const AbstractSystemMatrix& left,const Data& right)
53 {
54 Data tmp=(Data) right;
55 return left.vectorMultiply(tmp);
56 }
57
58 Data AbstractSystemMatrix::vectorMultiply(Data& right) const
59 {
60 if (isEmpty())
61 throw SystemMatrixException("Error - Matrix is empty.");
62 if (right.getDataPointSize()!=getColumnBlockSize())
63 throw SystemMatrixException("Error - column block size and input data size do not match.");
64 DataArrayView::ShapeType shape;
65 if (getRowBlockSize()>1) shape.push_back(getRowBlockSize());
66
67 Data out=Data(0.,shape,getRowFunctionSpace(),true);
68 Data in=Data(right,getColumnFunctionSpace());
69 ypAx(out,in);
70 return out;
71 }
72
73 void AbstractSystemMatrix::ypAx(Data& y,Data& x) const
74 {
75 throw SystemMatrixException("Error - ypAx not available");
76 }
77
78 Data AbstractSystemMatrix::solve(Data& in,const boost::python::dict& options) const
79 {
80 if (isEmpty())
81 throw SystemMatrixException("Error - Matrix is empty.");
82 if (in.getFunctionSpace()!=getRowFunctionSpace())
83 throw SystemMatrixException("Error - row function space and function space of right hand side do not match.");
84 if (in.getDataPointSize()!=getRowBlockSize())
85 throw SystemMatrixException("Error - row block size and right hand side size do not match.");
86 DataArrayView::ShapeType shape;
87 if (getRowBlockSize()>1) shape.push_back(getColumnBlockSize());
88 Data out=Data(0.,shape,getColumnFunctionSpace(),true);
89 setToSolution(out,in,options);
90 return out;
91 }
92 void AbstractSystemMatrix::setToSolution(Data& out,Data& in,const boost::python::dict& options) const
93 {
94 throw SystemMatrixException("Error - setToSolution not available");
95 }
96 void AbstractSystemMatrix::saveMM(const std::string& fileName) const
97 {
98 throw SystemMatrixException("Error - Matrix Market interface not available.");
99 }
100 void AbstractSystemMatrix::saveHB(const std::string& fileName) const
101 {
102 throw SystemMatrixException("Error - Harwell-Boeing interface not available.");
103 }
104 void AbstractSystemMatrix::resetValues() const
105 {
106 throw SystemMatrixException("Error - setValue is not implemented.");
107 }
108
109 } // end of namespace

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