/usr/include/gmsh/linearSystemFull.h is in libgmsh-dev 2.10.1+dfsg1-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | // Gmsh - Copyright (C) 1997-2015 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file for license information. Please report all
// bugs and problems to the public mailing list <gmsh@geuz.org>.
#ifndef _LINEAR_SYSTEM_FULL_H_
#define _LINEAR_SYSTEM_FULL_H_
// Interface to a linear system with a FULL matrix
#include "GmshMessage.h"
#include "linearSystem.h"
#include "fullMatrix.h"
#include <stdlib.h>
#include <set>
template <class scalar>
class linearSystemFull : public linearSystem<scalar> {
private:
fullMatrix<scalar> *_a;
fullVector<scalar> *_b, *_x;
public :
linearSystemFull() : _a(0), _b(0), _x(0){}
virtual bool isAllocated() const { return _a != 0; }
virtual void allocate(int nbRows)
{
clear();
_a = new fullMatrix<scalar>(nbRows, nbRows);
_b = new fullVector<scalar>(nbRows);
_x = new fullVector<scalar>(nbRows);
}
virtual ~linearSystemFull()
{
clear();
}
virtual void clear()
{
if(_a){
delete _a;
delete _b;
delete _x;
}
_a = 0;
}
virtual void addToMatrix(int row, int col, const scalar &val)
{
if(val != 0.0) (*_a)(row, col) += val;
}
virtual void getFromMatrix(int row, int col, scalar &val) const
{
val = (*_a)(row, col);
}
virtual void addToRightHandSide(int row, const scalar &val)
{
if(val != 0.0) (*_b)(row) += val;
}
virtual void addToSolution(int row, const scalar &val)
{
if(val != 0.0) (*_x)(row) += val;
}
virtual void getFromRightHandSide(int row, scalar &val) const
{
val = (*_b)(row);
}
virtual void getFromSolution(int row, scalar &val) const
{
val = (*_x)(row);
}
virtual void zeroMatrix()
{
_a->setAll(0.);
}
virtual void zeroRightHandSide()
{
_b->setAll(0.);
}
virtual void zeroSolution()
{
_x->setAll(0.);
}
virtual double normInfRightHandSide() const{
double nor = 0.;
double temp;
for(int i=0;i<_b->size();i++){
temp = (*_b)(i);
if(temp<0) temp = -temp;
if(nor<temp) nor=temp;
}
return nor;
}
virtual int systemSolve()
{
if (_b->size())
_a->luSolve(*_b, *_x);
// _x->print("X in solve");
return 1;
}
};
#endif
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