/*

Copyright (C) 2008-2018 Jaroslav Hajek

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

*/

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

#include "ops.h"
#include "errwarn.h"
#include "xpow.h"
#include SINCLUDE
#include MINCLUDE

// matrix by diag matrix ops.

#if ! defined (SCALARV)
#  define SCALARV SCALAR
#endif

#if ! defined (MATRIXV)
#  define MATRIXV MATRIX
#endif

DEFNDBINOP_OP (sdmmul, SCALAR, MATRIX, SCALARV, MATRIXV, *)
DEFNDBINOP_OP (dmsmul, MATRIX, SCALAR, MATRIXV, SCALARV, *)

#define OCTAVE_MATRIX CONCAT2(octave_, MATRIX)
#define OCTAVE_SCALAR CONCAT2(octave_, SCALAR)
#define MATRIX_VALUE CONCAT2(MATRIXV, _value)
#define SCALAR_VALUE CONCAT2(SCALARV, _value)

template <typename T>
static T
gripe_if_zero (T x)
{
  if (x == T ())
    warn_divide_by_zero ();

  return x;
}

DEFBINOP (dmsdiv, MATRIX, SCALAR)
{
  const OCTAVE_MATRIX& v1 = dynamic_cast<const OCTAVE_MATRIX&> (a1);
  const OCTAVE_SCALAR& v2 = dynamic_cast<const OCTAVE_SCALAR&> (a2);

  return v1.MATRIX_VALUE () / gripe_if_zero (v2.SCALAR_VALUE ());
}

DEFBINOP (sdmldiv, SCALAR, MATRIX)
{
  const OCTAVE_SCALAR& v1 = dynamic_cast<const OCTAVE_SCALAR&> (a1);
  const OCTAVE_MATRIX& v2 = dynamic_cast<const OCTAVE_MATRIX&> (a2);

  return v2.MATRIX_VALUE () / gripe_if_zero (v1.SCALAR_VALUE ());
}

DEFBINOP (dmspow, MATRIX, SCALAR)
{
  const OCTAVE_MATRIX& v1 = dynamic_cast<const OCTAVE_MATRIX&> (a1);
  const OCTAVE_SCALAR& v2 = dynamic_cast<const OCTAVE_SCALAR&> (a2);

  return xpow (v1.MATRIX_VALUE (), v2.SCALAR_VALUE ());
}

#define SHORT_NAME CONCAT3(MSHORT, _, SSHORT)
#define INST_NAME CONCAT3(install_, SHORT_NAME, _ops)

void
INST_NAME (octave::type_info& ti)
{
  INSTALL_BINOP_TI (ti, op_mul, OCTAVE_MATRIX, OCTAVE_SCALAR, dmsmul);
  INSTALL_BINOP_TI (ti, op_div, OCTAVE_MATRIX, OCTAVE_SCALAR, dmsdiv);
  INSTALL_BINOP_TI (ti, op_mul, OCTAVE_SCALAR, OCTAVE_MATRIX, sdmmul);
  INSTALL_BINOP_TI (ti, op_ldiv, OCTAVE_SCALAR, OCTAVE_MATRIX, sdmldiv);
  INSTALL_BINOP_TI (ti, op_pow, OCTAVE_MATRIX, OCTAVE_SCALAR, dmspow);
}
