/usr/include/dune/common/dynmatrix.hh is in libdune-common-dev 2.4.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_DYNMATRIX_HH
#define DUNE_DYNMATRIX_HH
#include <cmath>
#include <cstddef>
#include <iostream>
#include <dune/common/exceptions.hh>
#include <dune/common/dynvector.hh>
#include <dune/common/densematrix.hh>
namespace Dune
{
/**
@addtogroup DenseMatVec
@{
*/
/*! \file
* \brief This file implements a dense matrix with dynamic numbers of rows and columns.
*/
template< class K > class DynamicMatrix;
template< class K >
struct DenseMatVecTraits< DynamicMatrix<K> >
{
typedef DynamicMatrix<K> derived_type;
typedef DynamicVector<K> row_type;
typedef row_type &row_reference;
typedef const row_type &const_row_reference;
typedef std::vector<K> container_type;
typedef K value_type;
typedef typename container_type::size_type size_type;
};
template< class K >
struct FieldTraits< DynamicMatrix<K> >
{
typedef typename FieldTraits<K>::field_type field_type;
typedef typename FieldTraits<K>::real_type real_type;
};
/** \brief Construct a matrix with a dynamic size.
*
* \tparam K is the field type (use float, double, complex, etc)
*/
template<class K>
class DynamicMatrix : public DenseMatrix< DynamicMatrix<K> >
{
std::vector< DynamicVector<K> > _data;
typedef DenseMatrix< DynamicMatrix<K> > Base;
public:
typedef typename Base::size_type size_type;
typedef typename Base::value_type value_type;
typedef typename Base::row_type row_type;
//===== constructors
//! \brief Default constructor
DynamicMatrix () {}
//! \brief Constructor initializing the whole matrix with a scalar
DynamicMatrix (size_type r, size_type c, value_type v = value_type() ) :
_data(r, row_type(c, v) )
{}
//==== resize related methods
void resize (size_type r, size_type c, value_type v = value_type() )
{
_data.resize(0);
_data.resize(r, row_type(c, v) );
}
//===== assignment
using Base::operator=;
// make this thing a matrix
size_type mat_rows() const { return _data.size(); }
size_type mat_cols() const {
assert(this->rows());
return _data.front().size();
}
row_type & mat_access(size_type i) { return _data[i]; }
const row_type & mat_access(size_type i) const { return _data[i]; }
};
/** @} end documentation */
} // end namespace
#endif
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