view liboctave/fCmplxSCHUR.h @ 8987:542015fada9e

Eliminate the workspace in sparse transpose. The output's cidx (column start offset array) can serve as the workspace, so the routines operate in the space of their output.
author Jason Riedy <jason@acm.org>
date Mon, 16 Mar 2009 17:03:07 -0400
parents d865363208d6
children 4c0cdbe0acca
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/*

Copyright (C) 1994, 1995, 1996, 1997, 2000, 2002, 2004, 2005, 2006,
              2007, 2008 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_FloatComplexSCHUR_h)
#define octave_FloatComplexSCHUR_h 1

#include <iosfwd>
#include <string>

#include "fCMatrix.h"

class
OCTAVE_API
FloatComplexSCHUR
{
public:

  FloatComplexSCHUR (void)
    : schur_mat (), unitary_mat () { }

  FloatComplexSCHUR (const FloatComplexMatrix& a, const std::string& ord,
		bool calc_unitary = true)
    : schur_mat (), unitary_mat () { init (a, ord, calc_unitary); }

  FloatComplexSCHUR (const FloatComplexMatrix& a, const std::string& ord, octave_idx_type& info,
		bool calc_unitary = true)
    : schur_mat (), unitary_mat () { info = init (a, ord, calc_unitary); }

  FloatComplexSCHUR (const FloatComplexSCHUR& a)
    : schur_mat (a.schur_mat), unitary_mat (a.unitary_mat) { }

  FloatComplexSCHUR& operator = (const FloatComplexSCHUR& a)
    {
      if (this != &a)
	{
	  schur_mat = a.schur_mat;
	  unitary_mat = a.unitary_mat;
	}
      return *this;
    }

  ~FloatComplexSCHUR (void) { }

  FloatComplexMatrix schur_matrix (void) const { return schur_mat; }

  FloatComplexMatrix unitary_matrix (void) const { return unitary_mat; }

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

  typedef octave_idx_type (*select_function) (const FloatComplex&);

private:

  FloatComplexMatrix schur_mat;
  FloatComplexMatrix unitary_mat;

  select_function selector;

  octave_idx_type init (const FloatComplexMatrix& a, const std::string& ord, bool calc_unitary);
};

#endif

/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/