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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2006-2025 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Octave 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING. If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if ! defined (octave_MatrixType_h)
#define octave_MatrixType_h 1
#include "octave-config.h"
#include "mx-fwd.h"
#include "MSparse.h"
class MatrixType
{
public:
enum matrix_type
{
Unknown = 0,
Full,
Diagonal,
Permuted_Diagonal,
Upper,
Lower,
Permuted_Upper,
Permuted_Lower,
Banded,
Hermitian,
Banded_Hermitian,
Tridiagonal,
Tridiagonal_Hermitian,
Rectangular
};
OCTAVE_API MatrixType ();
OCTAVE_API MatrixType (const MatrixType& a);
OCTAVE_API MatrixType (const Matrix& a);
OCTAVE_API MatrixType (const ComplexMatrix& a);
OCTAVE_API MatrixType (const FloatMatrix& a);
OCTAVE_API MatrixType (const FloatComplexMatrix& a);
template <typename T>
OCTAVE_API
MatrixType (const MSparse<T>& a);
OCTAVE_API MatrixType (const matrix_type t, bool _full = false);
OCTAVE_API MatrixType (const matrix_type t, const octave_idx_type np,
const octave_idx_type *p, bool _full = false);
OCTAVE_API MatrixType (const matrix_type t, const octave_idx_type ku,
const octave_idx_type kl, bool _full = false);
OCTAVE_API ~MatrixType ();
OCTAVE_API MatrixType& operator = (const MatrixType& a);
OCTAVE_API int type (bool quiet = true);
OCTAVE_API int type (const Matrix& a);
OCTAVE_API int type (const ComplexMatrix& a);
OCTAVE_API int type (const FloatMatrix& a);
OCTAVE_API int type (const FloatComplexMatrix& a);
OCTAVE_API int type (const SparseMatrix& a);
OCTAVE_API int type (const SparseComplexMatrix& a);
double band_density () const { return m_bandden; }
int nupper () const { return m_upper_band; }
int nlower () const { return m_lower_band; }
bool is_dense () const { return m_dense; }
bool isdiag () const
{ return (m_type == Diagonal || m_type == Permuted_Diagonal); }
bool istriu () const
{ return (m_type == Upper || m_type == Permuted_Upper); }
bool istril () const
{ return (m_type == Lower || m_type == Permuted_Lower); }
bool isbanded () const
{ return (m_type == Banded || m_type == Banded_Hermitian); }
bool is_tridiagonal () const
{ return (m_type == Tridiagonal || m_type == Tridiagonal_Hermitian); }
bool ishermitian () const
{
return (m_type == Banded_Hermitian || m_type == Tridiagonal_Hermitian
|| m_type == Hermitian);
}
bool is_rectangular () const { return (m_type == Rectangular); }
bool is_known () const { return (m_type != Unknown); }
bool is_unknown () const { return (m_type == Unknown); }
OCTAVE_API void info () const;
octave_idx_type * triangular_perm () const { return m_perm; }
void invalidate_type () { m_type = Unknown; }
void mark_as_diagonal () { m_type = Diagonal; }
void mark_as_permuted_diagonal () { m_type = Permuted_Diagonal; }
void mark_as_upper_triangular () { m_type = Upper; }
void mark_as_lower_triangular () { m_type = Lower; }
void mark_as_tridiagonal () {m_type = Tridiagonal; }
void mark_as_banded (const octave_idx_type ku, const octave_idx_type kl)
{ m_type = Banded; m_upper_band = ku; m_lower_band = kl; }
void mark_as_full () { m_type = Full; }
void mark_as_rectangular () { m_type = Rectangular; }
void mark_as_dense () { m_dense = true; }
void mark_as_not_dense () { m_dense = false; }
OCTAVE_API void mark_as_symmetric ();
OCTAVE_API void mark_as_unsymmetric ();
OCTAVE_API void mark_as_permuted (const octave_idx_type np, const octave_idx_type *p);
OCTAVE_API void mark_as_unpermuted ();
OCTAVE_API MatrixType transpose () const;
private:
void type (int new_typ) { m_type = static_cast<matrix_type> (new_typ); }
matrix_type m_type;
double m_sp_bandden;
double m_bandden;
octave_idx_type m_upper_band;
octave_idx_type m_lower_band;
bool m_dense;
bool m_full;
octave_idx_type m_nperm;
octave_idx_type *m_perm;
};
#endif
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