MatrixType.h

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// Copyright (C) 2006-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
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// This file is part of Octave.
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#if ! defined (octave_MatrixType_h)
#define octave_MatrixType_h 1
 
#include "octave-config.h"
 
#include "MSparse.h"
 
class Matrix;
class ComplexMatrix;
class FloatMatrix;
class FloatComplexMatrix;
class SparseMatrix;
class SparseComplexMatrix;
 
class
OCTAVE_API
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
  };
 
  MatrixType (void);
 
  MatrixType (const MatrixType& a);
 
  MatrixType (const Matrix& a);
 
  MatrixType (const ComplexMatrix& a);
 
  MatrixType (const FloatMatrix& a);
 
  MatrixType (const FloatComplexMatrix& a);
 
  template <typename T>
  MatrixType (const MSparse<T> &a);
 
  MatrixType (const matrix_type t, bool _full = false);
 
  MatrixType (const matrix_type t, const octave_idx_type np,
              const octave_idx_type *p, bool _full = false);
 
  MatrixType (const matrix_type t, const octave_idx_type ku,
              const octave_idx_type kl, bool _full = false);
 
  ~MatrixType (void);
 
  MatrixType& operator = (const MatrixType& a);
 
  int type (bool quiet = true);
 
  int type (const Matrix& a);
 
  int type (const ComplexMatrix& a);
 
  int type (const FloatMatrix& a);
 
  int type (const FloatComplexMatrix& a);
 
  int type (const SparseMatrix& a);
 
  int type (const SparseComplexMatrix& a);
 
  double band_density (void) const { return bandden; }
 
  int nupper (void) const { return upper_band; }
 
  int nlower (void) const { return lower_band; }
 
  bool is_dense (void) const { return dense; }
 
  bool isdiag (void) const
  { return (typ == Diagonal || typ == Permuted_Diagonal); }
 
  bool istriu (void) const
  { return (typ == Upper || typ == Permuted_Upper); }
 
  bool istril (void) const
  { return (typ == Lower || typ == Permuted_Lower); }
 
  bool isbanded (void) const
  { return (typ == Banded || typ == Banded_Hermitian); }
 
  bool is_tridiagonal (void) const
  { return (typ == Tridiagonal || typ == Tridiagonal_Hermitian); }
 
  bool ishermitian (void) const
  {
    return (typ == Banded_Hermitian || typ == Tridiagonal_Hermitian
            || typ == Hermitian);
  }
 
  bool is_rectangular (void) const { return (typ == Rectangular); }
 
  bool is_known (void) const { return (typ != Unknown); }
 
  bool is_unknown (void) const { return (typ == Unknown); }
 
  void info (void) const;
 
  octave_idx_type * triangular_perm (void) const { return perm; }
 
  void invalidate_type (void) { typ = Unknown; }
 
  void mark_as_diagonal (void) { typ = Diagonal; }
 
  void mark_as_permuted_diagonal (void) { typ = Permuted_Diagonal; }
 
  void mark_as_upper_triangular (void) { typ = Upper; }
 
  void mark_as_lower_triangular (void) { typ = Lower; }
 
  void mark_as_tridiagonal (void) {typ = Tridiagonal; }
 
  void mark_as_banded (const octave_idx_type ku, const octave_idx_type kl)
  { typ = Banded; upper_band = ku; lower_band = kl; }
 
  void mark_as_full (void) { typ = Full; }
 
  void mark_as_rectangular (void) { typ = Rectangular; }
 
  void mark_as_dense (void) { dense = true; }
 
  void mark_as_not_dense (void) { dense = false; }
 
  void mark_as_symmetric (void);
 
  void mark_as_unsymmetric (void);
 
  void mark_as_permuted (const octave_idx_type np, const octave_idx_type *p);
 
  void mark_as_unpermuted (void);
 
  MatrixType transpose (void) const;
 
private:
  void type (int new_typ) { typ = static_cast<matrix_type> (new_typ); }
 
  matrix_type typ;
  double sp_bandden;
  double bandden;
  octave_idx_type upper_band;
  octave_idx_type lower_band;
  bool dense;
  bool full;
  octave_idx_type nperm;
  octave_idx_type *perm;
};
 
#endif