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//
// Copyright (C) 2004-2026 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
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// under the terms of the GNU General Public License as published by
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// along with Octave; see the file COPYING.  If not, see
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////////////////////////////////////////////////////////////////////////

#if ! defined (octave_intNDArray_h)
#define octave_intNDArray_h 1

#include "octave-config.h"

#include "intNDArray-fwd.h"
#include "mx-fwd.h"
#include "MArray.h"
#include "boolNDArray.h"

template <typename T>
class intNDArray : public MArray<T>
{
public:

  using typename MArray<T>::element_type;

  intNDArray () = default;

  intNDArray (const intNDArray<T>& a) = default;

  intNDArray& operator = (const intNDArray<T>& a) = default;

  ~intNDArray () = default;

  intNDArray (T val) : MArray<T> (dim_vector (1, 1), val) { }

  intNDArray (const dim_vector& dv) : MArray<T> (dv) { }

  intNDArray (const dim_vector& dv, T val)
    : MArray<T> (dv, val) { }

  template <typename U>
  intNDArray (const Array<U>& a) : MArray<T> (a) { }

  template <typename U>
  intNDArray (const MArray<U>& a) : MArray<T> (a) { }

  template <typename U>
  intNDArray (const intNDArray<U>& a) : MArray<T> (a) { }

  OCTAVE_API boolNDArray operator ! () const;

  bool any_element_is_nan () const { return false; }
  OCTAVE_API bool any_element_not_one_or_zero () const;

  OCTAVE_API intNDArray diag (octave_idx_type k = 0) const;

  OCTAVE_API intNDArray diag (octave_idx_type m, octave_idx_type n) const;

  intNDArray& changesign ()
  {
    MArray<T>::changesign ();
    return *this;
  }

  // FIXME: this is not quite the right thing.

  OCTAVE_API boolNDArray all (int dim = -1) const;
  OCTAVE_API boolNDArray any (int dim = -1) const;

  OCTAVE_API intNDArray flip (int dim) const;
  OCTAVE_API intNDArray cumprod (int dim) const;
  OCTAVE_API intNDArray cumsum (int dim) const;
  OCTAVE_API intNDArray prod (int dim) const;
  OCTAVE_API intNDArray sum (int dim) const;
  OCTAVE_API NDArray dsum (int dim) const;
  OCTAVE_API intNDArray sumsq (int dim) const;

  OCTAVE_API intNDArray
  max (int dim = -1, bool nanflag = true, bool realabs = true) const;
  OCTAVE_API intNDArray max (Array<octave_idx_type>& index, int dim = -1,
                             bool nanflag = true, bool realabs = true) const;
  OCTAVE_API intNDArray
  min (int dim = -1, bool nanflag = true, bool realabs = true) const;
  OCTAVE_API intNDArray min (Array<octave_idx_type>& index, int dim = -1,
                             bool nanflag = true, bool realabs = true) const;

  OCTAVE_API intNDArray
  cummax (int dim = -1, bool nanflag = true, bool realabs = true) const;
  OCTAVE_API intNDArray cummax (Array<octave_idx_type>& index, int dim = -1,
                                bool nanflag = true, bool realabs = true) const;
  OCTAVE_API intNDArray
  cummin (int dim = -1, bool nanflag = true, bool realabs = true) const;
  OCTAVE_API intNDArray cummin (Array<octave_idx_type>& index, int dim = -1,
                                bool nanflag = true, bool realabs = true) const;

  OCTAVE_API intNDArray diff (octave_idx_type order = 1, int dim = -1) const;

  OCTAVE_API intNDArray abs () const;
  OCTAVE_API intNDArray signum () const;

  intNDArray squeeze () const
  { return intNDArray<T> (MArray<T>::squeeze ()); }

  intNDArray transpose () const
  { return intNDArray<T> (MArray<T>::transpose ()); }

  OCTAVE_API intNDArray
  concat (const intNDArray<T>& rb, const Array<octave_idx_type>& ra_idx);

  OCTAVE_API intNDArray&
  insert (const intNDArray<T>& a, octave_idx_type r, octave_idx_type c);
  OCTAVE_API intNDArray&
  insert (const intNDArray<T>& a, const Array<octave_idx_type>& ra_idx);

  static OCTAVE_API void
  increment_index (Array<octave_idx_type>& ra_idx,
                   const dim_vector& dimensions, int start_dimension = 0);

  static OCTAVE_API octave_idx_type
  compute_index (Array<octave_idx_type>& ra_idx, const dim_vector& dimensions);
};

// i/o

template <typename T>
OCTAVE_API std::ostream&
operator << (std::ostream& os, const intNDArray<T>& a);

template <typename T>
OCTAVE_API std::istream&
operator >> (std::istream& is, intNDArray<T>& a);

#endif
