dense_vector_base.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2025 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner

// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



#ifndef LIBMESH_DENSE_VECTOR_BASE_H
#define LIBMESH_DENSE_VECTOR_BASE_H


// Local Includes
#include "libmesh/libmesh_common.h"
#include "libmesh/int_range.h"

// C++ includes

namespace libMesh
{

template<typename T>
class DenseVectorBase
{
public:
  DenseVectorBase() = default;

  DenseVectorBase (DenseVectorBase &&) = default;
  DenseVectorBase (const DenseVectorBase &) = default;
  DenseVectorBase & operator= (const DenseVectorBase &) = default;
  DenseVectorBase & operator= (DenseVectorBase &&) = default;
  virtual ~DenseVectorBase() = default;

  virtual void zero() = 0;

  virtual T el(const unsigned int i) const = 0;

  virtual T & el(const unsigned int i) = 0;

  virtual unsigned int size() const = 0;

  virtual bool empty() const { return (this->size() == 0); }

  void print(std::ostream & os) const;

  friend std::ostream & operator << (std::ostream & os, const DenseVectorBase<T> & v)
  {
    v.print(os);
    return os;
  }

  void print_scientific(std::ostream & os, unsigned precision=8) const;
};

template<typename T>
void DenseVectorBase<T>::print (std::ostream & os) const
{
  for (auto i : make_range(this->size()))
    os << std::setw(8)
       << this->el(i)
       << std::endl;
}

} // namespace libMesh



#endif // LIBMESH_DENSE_VECTOR_BASE_H