/*

Copyright (C) 2008-2017 VZLU Prague, a.s.

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/>.

*/

// author: Jaroslav Hajek <highegg@gmail.com>

#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif

#include <cassert>
#include <cfloat>
#include <cmath>

#include "oct-norm.h"

#include "error.h"
#include "xnorm.h"
#include "ov.h"
#include "errwarn.h"

octave_value xnorm (const octave_value& x, const octave_value& p)
{
  octave_value retval;

  bool isvector = (x.columns () == 1 || x.rows () == 1);
  bool iscomplex = x.is_complex_type ();
  bool issparse = x.is_sparse_type ();
  bool isfloat = x.is_single_type ();

  if (! isfloat && ! x.is_double_type ())
    err_wrong_type_arg ("xnorm", x);

  if (x.is_empty ())
    retval = octave_value (0);
  else if (isvector)
    {
      if (isfloat & iscomplex)
        retval = xnorm (x.float_complex_column_vector_value (),
                        p.float_value ());
      else if (isfloat)
        retval = xnorm (x.float_column_vector_value (),
                        p.float_value ());
      else if (iscomplex)
        retval = xnorm (x.complex_column_vector_value (),
                        p.double_value ());
      else
        retval = xnorm (x.column_vector_value (),
                        p.double_value ());
    }
  else if (issparse)
    {
      if (iscomplex)
        retval = xnorm (x.sparse_complex_matrix_value (),
                        p.double_value ());
      else
        retval = xnorm (x.sparse_matrix_value (),
                        p.double_value ());
    }
  else
    {
      if (isfloat & iscomplex)
        retval = xnorm (x.float_complex_matrix_value (),
                        p.float_value ());
      else if (isfloat)
        retval = xnorm (x.float_matrix_value (),
                        p.float_value ());
      else if (iscomplex)
        retval = xnorm (x.complex_matrix_value (),
                        p.double_value ());
      else
        retval = xnorm (x.matrix_value (),
                        p.double_value ());
    }

  return retval;
}

octave_value xcolnorms (const octave_value& x, const octave_value& p)
{
  octave_value retval;

  bool iscomplex = x.is_complex_type ();
  bool issparse = x.is_sparse_type ();
  bool isfloat = x.is_single_type ();

  if (! isfloat && ! x.is_double_type ())
    err_wrong_type_arg ("xcolnorms", x);

  if (issparse)
    {
      if (iscomplex)
        retval = xcolnorms (x.sparse_complex_matrix_value (),
                            p.double_value ());
      else
        retval = xcolnorms (x.sparse_matrix_value (),
                            p.double_value ());
    }
  else
    {
      if (isfloat & iscomplex)
        retval = xcolnorms (x.float_complex_matrix_value (),
                            p.float_value ());
      else if (isfloat)
        retval = xcolnorms (x.float_matrix_value (),
                            p.float_value ());
      else if (iscomplex)
        retval = xcolnorms (x.complex_matrix_value (),
                            p.double_value ());
      else
        retval = xcolnorms (x.matrix_value (),
                            p.double_value ());
    }

  return retval;
}

octave_value xrownorms (const octave_value& x, const octave_value& p)
{
  octave_value retval;

  bool iscomplex = x.is_complex_type ();
  bool issparse = x.is_sparse_type ();
  bool isfloat = x.is_single_type ();

  if (! isfloat && ! x.is_double_type ())
    err_wrong_type_arg ("xrownorms", x);

  if (issparse)
    {
      if (iscomplex)
        retval = xrownorms (x.sparse_complex_matrix_value (),
                            p.double_value ());
      else
        retval = xrownorms (x.sparse_matrix_value (),
                            p.double_value ());
    }
  else
    {
      if (isfloat & iscomplex)
        retval = xrownorms (x.float_complex_matrix_value (),
                            p.float_value ());
      else if (isfloat)
        retval = xrownorms (x.float_matrix_value (),
                            p.float_value ());
      else if (iscomplex)
        retval = xrownorms (x.complex_matrix_value (),
                            p.double_value ());
      else
        retval = xrownorms (x.matrix_value (),
                            p.double_value ());
    }

  return retval;
}

octave_value xfrobnorm (const octave_value& x)
{
  octave_value retval;

  bool iscomplex = x.is_complex_type ();
  bool issparse = x.is_sparse_type ();
  bool isfloat = x.is_single_type ();

  if (! isfloat && ! x.is_double_type ())
    err_wrong_type_arg ("xfrobnorm", x);

  if (issparse)
    {
      if (iscomplex)
        retval = xfrobnorm (x.sparse_complex_matrix_value ());
      else
        retval = xfrobnorm (x.sparse_matrix_value ());
    }
  else
    {
      if (isfloat & iscomplex)
        retval = xfrobnorm (x.float_complex_matrix_value ());
      else if (isfloat)
        retval = xfrobnorm (x.float_matrix_value ());
      else if (iscomplex)
        retval = xfrobnorm (x.complex_matrix_value ());
      else
        retval = xfrobnorm (x.matrix_value ());
    }

  return retval;
}