view liboctave/numeric/EIG.h @ 20651:e54ecb33727e

lo-array-gripes.cc: Remove FIXME's related to buffer size. * lo-array-gripes.cc: Remove FIXME's related to buffer size. Shorten sprintf buffers from 100 to 64 characters (still well more than 19 required). Use 'const' decorator on constant value for clarity. Remove extra space between variable and array bracket.
author Rik <rik@octave.org>
date Mon, 12 Oct 2015 21:13:47 -0700
parents 4197fc428c7d
children
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/*

Copyright (C) 1994-2015 John W. Eaton

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
<http://www.gnu.org/licenses/>.

*/

#if !defined (octave_EIG_h)
#define octave_EIG_h 1

#include <iosfwd>

#include "dMatrix.h"
#include "CMatrix.h"
#include "CColVector.h"

class
OCTAVE_API
EIG
{
  friend class Matrix;
  friend class ComplexMatrix;

public:

  EIG (void) : lambda (), v () { }

  EIG (const Matrix& a, bool calc_eigenvectors = true)
    : lambda (), v ()
  {
    init (a, calc_eigenvectors);
  }

  EIG (const Matrix& a, octave_idx_type& info, bool calc_eigenvectors = true)
    : lambda (), v ()
  {
    info = init (a, calc_eigenvectors);
  }

  EIG (const Matrix& a, const Matrix& b, bool calc_eigenvectors = true)
    : lambda (), v ()
  {
    init (a, b, calc_eigenvectors);
  }

  EIG (const Matrix& a, const Matrix& b, octave_idx_type& info,
       bool calc_eigenvectors = true)
    : lambda (), v ()
  {
    info = init (a, b, calc_eigenvectors);
  }

  EIG (const ComplexMatrix& a, bool calc_eigenvectors = true)
    : lambda (), v ()
  {
    init (a, calc_eigenvectors);
  }

  EIG (const ComplexMatrix& a, octave_idx_type& info,
       bool calc_eigenvectors = true)
    : lambda (), v ()
  {
    info = init (a, calc_eigenvectors);
  }

  EIG (const ComplexMatrix& a, const ComplexMatrix& b,
       bool calc_eigenvectors = true)
    : lambda (), v ()
  {
    init (a, b, calc_eigenvectors);
  }

  EIG (const ComplexMatrix& a, const ComplexMatrix& b,
       octave_idx_type& info, bool calc_eigenvectors = true)
    : lambda (), v ()
  {
    info = init (a, b, calc_eigenvectors);
  }

  EIG (const EIG& a)
    : lambda (a.lambda), v (a.v) { }

  EIG& operator = (const EIG& a)
  {
    if (this != &a)
      {
        lambda = a.lambda;
        v = a.v;
      }
    return *this;
  }

  ~EIG (void) { }

  ComplexColumnVector eigenvalues (void) const { return lambda; }

  ComplexMatrix eigenvectors (void) const { return v; }

  friend std::ostream&  operator << (std::ostream& os, const EIG& a);

private:

  ComplexColumnVector lambda;
  ComplexMatrix v;

  octave_idx_type init (const Matrix& a, bool calc_eigenvectors);

  octave_idx_type init (const Matrix& a, const Matrix& b,
                        bool calc_eigenvectors);

  octave_idx_type init (const ComplexMatrix& a, bool calc_eigenvectors);

  octave_idx_type init (const ComplexMatrix& a, const ComplexMatrix& b,
                        bool calc_eigenvectors);

  octave_idx_type symmetric_init (const Matrix& a, bool calc_eigenvectors);

  octave_idx_type symmetric_init (const Matrix& a, const Matrix& b,
                                  bool calc_eigenvectors);

  octave_idx_type hermitian_init (const ComplexMatrix& a,
                                  bool calc_eigenvectors);

  octave_idx_type hermitian_init (const ComplexMatrix& a,
                                  const ComplexMatrix& b,
                                  bool calc_eigenvectors);

};

#endif