/usr/include/libMems-1.6/libMems/Matrix.h is in libmems-1.6-dev 1.6.0+4725-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* $Id: Matrix.h,v 1.6 2004/02/27 23:08:55 darling Exp $
* This file is copyright 2002-2007 Aaron Darling and authors listed in the AUTHORS file.
* This file is licensed under the GPL.
* Please see the file called COPYING for licensing details.
* **************
******************************************************************************/
#ifndef __Matrix_h__
#define __Matrix_h__
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "libGenome/gnSetup.h"
#include <iostream>
#include <sstream>
#include <vector>
#include <stdexcept>
template<class T>
class Matrix
{
public:
Matrix();
Matrix(unsigned nrows, unsigned ncols);
// Throws a BadSize object if either size is zero
class BadSize : public std::range_error{
public:
BadSize() : std::range_error( "Bad matrix size" ){}
};
// Based on the Law Of The Big Three:
~Matrix();
Matrix(const Matrix<T>& m);
Matrix<T>& operator= (const Matrix<T>& m);
// Access methods to get the (i,j) element:
T& operator() (unsigned i, unsigned j);
const T& operator() (unsigned i, unsigned j) const;
// These throw a BoundsViolation object if i or j is too big
class BoundsViolation : public std::range_error{
public:
BoundsViolation() : std::range_error( "Index out of bounds" ){}
};
// Support for initializing each matrix element to a value
void init( const T& init_val );
void print( std::ostream& os ) const;
void read( std::istream& is );
unsigned rows() const;
unsigned cols() const;
protected:
T* data_;
unsigned nrows_, ncols_;
};
template<class T>
inline Matrix<T>::Matrix()
{
data_ = NULL;
nrows_ = 0;
ncols_ = 0;
}
template<class T>
inline unsigned Matrix<T>::rows() const
{
return nrows_;
}
template<class T>
inline unsigned Matrix<T>::cols() const
{
return ncols_;
}
template<class T>
inline T& Matrix<T>::operator() (unsigned row, unsigned col)
{
if (row >= nrows_ || col >= ncols_)
throw BoundsViolation();
return data_[row*ncols_ + col];
}
template<class T>
inline const T& Matrix<T>::operator() (unsigned row, unsigned col) const
{
if (row >= nrows_ || col >= ncols_) {
std::cout << "debug me ";
throw BoundsViolation();
}
return data_[row*ncols_ + col];
}
template<class T>
inline Matrix<T>::Matrix(unsigned nrows, unsigned ncols)
: data_ (new T[nrows * ncols]),
nrows_ (nrows),
ncols_ (ncols)
{
}
template<class T>
inline Matrix<T>::Matrix(const Matrix<T>& m){
*this = m;
}
template<class T>
inline Matrix<T>& Matrix<T>::operator=( const Matrix<T>& m )
{
if( data_ != NULL )
delete[] data_;
data_ = new T[m.nrows_ * m.ncols_];
nrows_ = m.nrows_;
ncols_ = m.ncols_;
memcpy( data_, m.data_, nrows_ * ncols_ * sizeof( T ) );
return *this;
}
template<class T>
inline Matrix<T>::~Matrix()
{
if( data_ != NULL )
delete[] data_;
}
template<class T>
inline void Matrix<T>::init( const T& init_val )
{
for( unsigned rowI = 0; rowI < nrows_; rowI++ )
for( unsigned colI = 0; colI < ncols_; colI++ )
data_[ rowI * ncols_ + colI ] = init_val;
}
template<class T>
inline void Matrix<T>::print( std::ostream& os ) const{
for( unsigned rowI = 0; rowI < nrows_; rowI++ ){
for( unsigned colI = 0; colI < ncols_; colI++ ){
if( colI > 0 )
os << '\t';
os << data_[ rowI * ncols_ + colI ];
}
os << std::endl;
}
}
template<class T>
inline void Matrix<T>::read( std::istream& is ){
std::vector< std::string > lines;
std::string cur_line;
while( std::getline( is, cur_line ) )
lines.push_back( cur_line );
nrows_ = lines.size();
// count ncols
std::stringstream ss( lines[0] );
ncols_ = 0;
while( std::getline( ss, cur_line, '\t' ) )
ncols_++;
data_ = new T[nrows_ * ncols_];
int valueI = 0;
for( int lineI = 0; lineI < lines.size(); lineI++ ){
ss = std::stringstream( lines[ lineI ] );
std::getline( ss, cur_line, '\t' );
std::stringstream type_stream( cur_line );
type_stream >> data_[ valueI ];
valueI++;
}
}
#endif // __Matrix_h__
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