Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F82310143
matrix.cpp
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Tue, Sep 10, 17:00
Size
4 KB
Mime Type
text/x-c
Expires
Thu, Sep 12, 17:00 (2 d)
Engine
blob
Format
Raw Data
Handle
20603661
Attached To
rLAMMPS lammps
matrix.cpp
View Options
/*
*_________________________________________________________________________*
* POEMS: PARALLELIZABLE OPEN SOURCE EFFICIENT MULTIBODY SOFTWARE *
* DESCRIPTION: SEE READ-ME *
* FILE NAME: matrix.cpp *
* AUTHORS: See Author List *
* GRANTS: See Grants List *
* COPYRIGHT: (C) 2005 by Authors as listed in Author's List *
* LICENSE: Please see License Agreement *
* DOWNLOAD: Free at www.rpi.edu/~anderk5 *
* ADMINISTRATOR: Prof. Kurt Anderson *
* Computational Dynamics Lab *
* Rensselaer Polytechnic Institute *
* 110 8th St. Troy NY 12180 *
* CONTACT: anderk5@rpi.edu *
*_________________________________________________________________________*/
#include "matrix.h"
#include <iostream>
#include <cstdlib>
using namespace std;
Matrix::Matrix(){
numrows = numcols = 0;
rows = 0;
elements = 0;
}
Matrix::~Matrix(){
delete [] rows;
delete [] elements;
}
Matrix::Matrix(const Matrix& A){
numrows = numcols = 0;
rows = 0;
elements = 0;
Dim(A.numrows,A.numcols);
for(int i=0;i<numrows*numcols;i++)
elements[i] = A.elements[i];
}
Matrix::Matrix(const VirtualMatrix& A){
numrows = numcols = 0;
rows = 0;
elements = 0;
Dim(A.GetNumRows(),A.GetNumCols());
for(int i=0;i<numrows;i++)
for(int j=0;j<numcols;j++)
rows[i][j] = A.BasicGet(i,j);
}
Matrix::Matrix(int m, int n){
numrows = numcols = 0;
rows = 0;
elements = 0;
this->Dim(m,n);
}
double& Matrix::operator_2int(int i, int j){
if((i>numrows) || (j>numcols) || (i*j==0)){
cerr << "matrix index exceeded in operator ()" << endl;
exit(1);
}
return rows[i-1][j-1];
}
double Matrix::Get_2int(int i, int j) const {
if((i>numrows) || (j>numcols) || (i*j==0)){
cerr << "matrix index exceeded in Get" << endl;
exit(1);
}
return rows[i-1][j-1];
}
void Matrix::Set_2int(int i, int j, double value){
if((i>numrows) || (j>numcols) || (i*j==0)){
cerr << "matrix index exceeded in Set" << endl;
exit(1);
}
rows[i-1][j-1] = value;
}
double Matrix::BasicGet_2int(int i, int j) const {
return rows[i][j];
}
void Matrix::BasicSet_2int(int i, int j, double value){
rows[i][j] = value;
}
void Matrix::BasicIncrement_2int(int i, int j, double value){
rows[i][j] += value;
}
void Matrix::Const(double value){
int num = numrows*numcols;
for(int i=0;i<num;i++) elements[i] = value;
}
MatrixType Matrix::GetType() const{
return MATRIX;
}
istream& Matrix::ReadData(istream& c){
int n,m;
c >> n >> m;
Dim(n,m);
for(int i=0;i<numrows;i++)
for(int j=0;j<numcols;j++){
c >> rows[i][j];
}
return c;
}
ostream& Matrix::WriteData(ostream& c) const{ //output
c << numrows << ' ' << numcols << ' ';
for(int i=0;i<numrows;i++)
for(int j=0;j<numcols;j++){
c << rows[i][j] << ' ';
}
return c;
}
Matrix& Matrix::Dim(int m, int n){ // allocate size
numrows = m;
numcols = n;
delete [] rows;
delete [] elements;
elements = new double[n*m];
rows = new double*[m];
for(int i=0;i<m;i++)
rows[i] = &elements[i*numcols];
return *this;
}
void Matrix::AssignVM(const VirtualMatrix& A){
Dim( A.GetNumRows(), A.GetNumCols() );
for(int i=0;i<numrows;i++)
for(int j=0;j<numcols;j++)
rows[i][j] = A.BasicGet(i,j);
}
Matrix& Matrix::operator=(const Matrix& A){
Dim(A.numrows,A.numcols);
for(int i=0;i<numrows*numcols;i++)
elements[i] = A.elements[i];
return *this;
}
Matrix& Matrix::operator=(const VirtualMatrix& A){
Dim( A.GetNumRows(), A.GetNumCols() );
for(int i=0;i<numrows;i++)
for(int j=0;j<numcols;j++)
rows[i][j] = A.BasicGet(i,j);
return *this;
}
Matrix& Matrix::operator*=(double b){
for(int i=0;i<numrows;i++)
for(int j=0;j<numcols;j++)
rows[i][j] *= b;
return *this;
}
Event Timeline
Log In to Comment