/*

Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 David Bateman
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Andy Adler

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/>.

*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "gripes.h"
#include "oct-obj.h"
#include "ov.h"
#include "ov-typeinfo.h"
#include "ov-re-mat.h"
#include "ov-null-mat.h"
#include "ops.h"

#include "sparse-xpow.h"
#include "sparse-xdiv.h"
#include "ov-re-sparse.h"

// sparse matrix unary ops.

DEFUNOP_OP (not, sparse_matrix, !)
DEFUNOP_OP (uplus, sparse_matrix, /* no-op */)
DEFUNOP_OP (uminus, sparse_matrix, -)

DEFUNOP (transpose, sparse_matrix)
{
  CAST_UNOP_ARG (const octave_sparse_matrix&);
  return octave_value (v.sparse_matrix_value().transpose (),
                       v.matrix_type ().transpose ());
}

// sparse matrix by sparse matrix ops.

DEFBINOP_OP (add, sparse_matrix, sparse_matrix, +)

// DEFBINOP_OP (sub, sparse_matrix, sparse_matrix, -)

  static octave_value
  oct_binop_sub (const octave_base_value& a1, const octave_base_value& a2)
  {
    const octave_sparse_matrix& v1 = dynamic_cast<const octave_sparse_matrix&> (a1);
    const octave_sparse_matrix& v2 = dynamic_cast<const octave_sparse_matrix&> (a2);
    SparseMatrix m = v1.sparse_matrix_value () - v2.sparse_matrix_value ();

    return octave_value (m);
  }

DEFBINOP_OP (mul, sparse_matrix, sparse_matrix, *)

DEFBINOP (div, sparse_matrix, sparse_matrix)
{
  CAST_BINOP_ARGS (const octave_sparse_matrix&, const octave_sparse_matrix&);

  if (v2.rows() == 1 && v2.columns() == 1)
    {
      double d = v2.scalar_value ();

      if (d == 0.0)
        gripe_divide_by_zero ();

      return octave_value (v1.sparse_matrix_value () / d);
    }
  else
    {
      MatrixType typ = v2.matrix_type ();
      SparseMatrix ret = xdiv (v1.sparse_matrix_value (), 
                               v2.sparse_matrix_value (), typ);
  
      v2.matrix_type (typ);
      return ret;
    }
}

DEFBINOPX (pow, sparse_matrix, sparse_matrix)
{
  error ("can't do A ^ B for A and B both matrices");
  return octave_value ();
}

DEFBINOP (ldiv, sparse_matrix, sparse_matrix)
{
  CAST_BINOP_ARGS (const octave_sparse_matrix&, const octave_sparse_matrix&);

  if (v1.rows() == 1 && v1.columns() == 1)
    {
      double d = v1.double_value ();

      if (d == 0.0)
        gripe_divide_by_zero ();

      return octave_value (v2.sparse_matrix_value () / d);
    }
  else
    {
      MatrixType typ = v1.matrix_type ();

      SparseMatrix ret = xleftdiv (v1.sparse_matrix_value (), 
                                   v2.sparse_matrix_value (), typ);

      v1.matrix_type (typ);
      return ret;
    }
}

DEFBINOP_FN (lt, sparse_matrix, sparse_matrix, mx_el_lt)
DEFBINOP_FN (le, sparse_matrix, sparse_matrix, mx_el_le)
DEFBINOP_FN (eq, sparse_matrix, sparse_matrix, mx_el_eq)
DEFBINOP_FN (ge, sparse_matrix, sparse_matrix, mx_el_ge)
DEFBINOP_FN (gt, sparse_matrix, sparse_matrix, mx_el_gt)
DEFBINOP_FN (ne, sparse_matrix, sparse_matrix, mx_el_ne)

DEFBINOP_FN (el_mul, sparse_matrix, sparse_matrix, product)
DEFBINOP_FN (el_div, sparse_matrix, sparse_matrix, quotient)

DEFBINOP_FN (el_pow, sparse_matrix, sparse_matrix, elem_xpow)

DEFBINOP (el_ldiv, sparse_matrix, sparse_matrix)
{
  CAST_BINOP_ARGS (const octave_sparse_matrix&, const octave_sparse_matrix&);
  return octave_value
    (quotient (v2.sparse_matrix_value (), v1.sparse_matrix_value ()));
}

DEFBINOP_FN (el_and, sparse_matrix, sparse_matrix, mx_el_and)
DEFBINOP_FN (el_or,  sparse_matrix, sparse_matrix, mx_el_or)

DEFCATOP_FN (sm_sm, sparse_matrix, sparse_matrix, concat)

DEFASSIGNOP_FN (assign, sparse_matrix, sparse_matrix, assign)

DEFNULLASSIGNOP_FN (null_assign, sparse_matrix, delete_elements)

void
install_sm_sm_ops (void)
{
  INSTALL_UNOP (op_not, octave_sparse_matrix, not);
  INSTALL_UNOP (op_uplus, octave_sparse_matrix, uplus);
  INSTALL_UNOP (op_uminus, octave_sparse_matrix, uminus);
  INSTALL_UNOP (op_transpose, octave_sparse_matrix, transpose);
  INSTALL_UNOP (op_hermitian, octave_sparse_matrix, transpose);

  INSTALL_BINOP (op_add, octave_sparse_matrix, octave_sparse_matrix, add);
  INSTALL_BINOP (op_sub, octave_sparse_matrix, octave_sparse_matrix, sub);
  INSTALL_BINOP (op_mul, octave_sparse_matrix, octave_sparse_matrix, mul);
  INSTALL_BINOP (op_div, octave_sparse_matrix, octave_sparse_matrix, div);
  INSTALL_BINOP (op_pow, octave_sparse_matrix, octave_sparse_matrix, pow);
  INSTALL_BINOP (op_ldiv, octave_sparse_matrix, octave_sparse_matrix, ldiv);
  INSTALL_BINOP (op_lt, octave_sparse_matrix, octave_sparse_matrix, lt);
  INSTALL_BINOP (op_le, octave_sparse_matrix, octave_sparse_matrix, le);
  INSTALL_BINOP (op_eq, octave_sparse_matrix, octave_sparse_matrix, eq);
  INSTALL_BINOP (op_ge, octave_sparse_matrix, octave_sparse_matrix, ge);
  INSTALL_BINOP (op_gt, octave_sparse_matrix, octave_sparse_matrix, gt);
  INSTALL_BINOP (op_ne, octave_sparse_matrix, octave_sparse_matrix, ne);
  INSTALL_BINOP (op_el_mul, octave_sparse_matrix, octave_sparse_matrix, 
                 el_mul);
  INSTALL_BINOP (op_el_div, octave_sparse_matrix, octave_sparse_matrix, 
                 el_div);
  INSTALL_BINOP (op_el_pow, octave_sparse_matrix, octave_sparse_matrix, 
                 el_pow);
  INSTALL_BINOP (op_el_ldiv, octave_sparse_matrix, octave_sparse_matrix, 
                 el_ldiv);
  INSTALL_BINOP (op_el_and, octave_sparse_matrix, octave_sparse_matrix, 
                 el_and);
  INSTALL_BINOP (op_el_or, octave_sparse_matrix, octave_sparse_matrix, 
                 el_or);

  INSTALL_CATOP (octave_sparse_matrix, octave_sparse_matrix, sm_sm);

  INSTALL_ASSIGNOP (op_asn_eq, octave_sparse_matrix, octave_sparse_matrix, 
                    assign);

  INSTALL_ASSIGNOP (op_asn_eq, octave_sparse_matrix, octave_null_matrix, null_assign);
  INSTALL_ASSIGNOP (op_asn_eq, octave_sparse_matrix, octave_null_str, null_assign);
  INSTALL_ASSIGNOP (op_asn_eq, octave_sparse_matrix, octave_null_sq_str, null_assign);
}