/*

Copyright (C) 1994-2011 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_FloatMatrix_int_h)
#define octave_FloatMatrix_int_h 1

#include "MArray.h"
#include "MDiagArray2.h"
#include "MatrixType.h"

#include "mx-defs.h"
#include "mx-op-decl.h"
#include "DET.h"

class
OCTAVE_API
FloatMatrix : public MArray<float>
{
public:

  typedef FloatColumnVector column_vector_type;
  typedef FloatRowVector row_vector_type;

  typedef void (*solve_singularity_handler) (float rcon);

  FloatMatrix (void) : MArray<float> () { }

  FloatMatrix (octave_idx_type r, octave_idx_type c)
    : MArray<float> (dim_vector (r, c)) { }

  FloatMatrix (octave_idx_type r, octave_idx_type c, float val)
    : MArray<float> (dim_vector (r, c), val) { }

  FloatMatrix (const dim_vector& dv) : MArray<float> (dv.redim (2)) { }

  FloatMatrix (const dim_vector& dv, float val)
    : MArray<float> (dv.redim (2), val) { }

  FloatMatrix (const FloatMatrix& a) : MArray<float> (a) { }

  template <class U>
  FloatMatrix (const MArray<U>& a) : MArray<float> (a.as_matrix ()) { }

  template <class U>
  FloatMatrix (const Array<U>& a) : MArray<float> (a.as_matrix ()) { }

  explicit FloatMatrix (const FloatRowVector& rv);

  explicit FloatMatrix (const FloatColumnVector& cv);

  explicit FloatMatrix (const FloatDiagMatrix& a);

  explicit FloatMatrix (const PermMatrix& a);

  explicit FloatMatrix (const boolMatrix& a);

  explicit FloatMatrix (const charMatrix& a);


  FloatMatrix& operator = (const FloatMatrix& a)
    {
      MArray<float>::operator = (a);
      return *this;
    }

  bool operator == (const FloatMatrix& a) const;
  bool operator != (const FloatMatrix& a) const;

  bool is_symmetric (void) const;

  // destructive insert/delete/reorder operations

  FloatMatrix& insert (const FloatMatrix& a, octave_idx_type r, octave_idx_type c);
  FloatMatrix& insert (const FloatRowVector& a, octave_idx_type r, octave_idx_type c);
  FloatMatrix& insert (const FloatColumnVector& a, octave_idx_type r, octave_idx_type c);
  FloatMatrix& insert (const FloatDiagMatrix& a, octave_idx_type r, octave_idx_type c);

  FloatMatrix& fill (float val);
  FloatMatrix& fill (float val, octave_idx_type r1, octave_idx_type c1, octave_idx_type r2, octave_idx_type c2);

  FloatMatrix append (const FloatMatrix& a) const;
  FloatMatrix append (const FloatRowVector& a) const;
  FloatMatrix append (const FloatColumnVector& a) const;
  FloatMatrix append (const FloatDiagMatrix& a) const;

  FloatMatrix stack (const FloatMatrix& a) const;
  FloatMatrix stack (const FloatRowVector& a) const;
  FloatMatrix stack (const FloatColumnVector& a) const;
  FloatMatrix stack (const FloatDiagMatrix& a) const;

  friend OCTAVE_API FloatMatrix real (const FloatComplexMatrix& a);
  friend OCTAVE_API FloatMatrix imag (const FloatComplexMatrix& a);

  friend class FloatComplexMatrix;

  FloatMatrix transpose (void) const { return MArray<float>::transpose (); }

  // resize is the destructive equivalent for this one

  FloatMatrix extract (octave_idx_type r1, octave_idx_type c1, octave_idx_type r2, octave_idx_type c2) const;

  FloatMatrix extract_n (octave_idx_type r1, octave_idx_type c1, octave_idx_type nr, octave_idx_type nc) const;

  // extract row or column i.

  FloatRowVector row (octave_idx_type i) const;

  FloatColumnVector column (octave_idx_type i) const;

  void resize (octave_idx_type nr, octave_idx_type nc,
               float rfv = resize_fill_value ())
  {
    MArray<float>::resize (dim_vector (nr, nc), rfv);
  }

private:
  FloatMatrix tinverse (MatrixType &mattype, octave_idx_type& info, float& rcon,
                   int force, int calc_cond) const;

  FloatMatrix finverse (MatrixType &mattype, octave_idx_type& info, float& rcon,
                   int force, int calc_cond) const;

public:
  FloatMatrix inverse (void) const;
  FloatMatrix inverse (octave_idx_type& info) const;
  FloatMatrix inverse (octave_idx_type& info, float& rcon, int force = 0,
                  int calc_cond = 1) const;

  FloatMatrix inverse (MatrixType &mattype) const;
  FloatMatrix inverse (MatrixType &mattype, octave_idx_type& info) const;
  FloatMatrix inverse (MatrixType &mattype, octave_idx_type& info, float& rcon,
                  int force = 0, int calc_cond = 1) const;

  FloatMatrix pseudo_inverse (float tol = 0.0) const;

  FloatComplexMatrix fourier (void) const;
  FloatComplexMatrix ifourier (void) const;

  FloatComplexMatrix fourier2d (void) const;
  FloatComplexMatrix ifourier2d (void) const;

  FloatDET determinant (void) const;
  FloatDET determinant (octave_idx_type& info) const;
  FloatDET determinant (octave_idx_type& info, float& rcon, int calc_cond = 1) const;
  FloatDET determinant (MatrixType &mattype, octave_idx_type& info,
                        float& rcon, int calc_cond = 1) const;

  float rcond (void) const;
  float rcond (MatrixType &mattype) const;

private:
  // Upper triangular matrix solvers
  FloatMatrix utsolve (MatrixType &typ, const FloatMatrix& b, octave_idx_type& info,
                  float& rcon, solve_singularity_handler sing_handler,
                  bool calc_cond = false, blas_trans_type transt = blas_no_trans) const;

  // Lower triangular matrix solvers
  FloatMatrix ltsolve (MatrixType &typ, const FloatMatrix& b, octave_idx_type& info,
                  float& rcon, solve_singularity_handler sing_handler,
                  bool calc_cond = false, blas_trans_type transt = blas_no_trans) const;

  // Full matrix solvers (lu/cholesky)
  FloatMatrix fsolve (MatrixType &typ, const FloatMatrix& b, octave_idx_type& info,
                 float& rcon, solve_singularity_handler sing_handler,
                 bool calc_cond = false) const;

public:
  // Generic interface to solver with no probing of type
  FloatMatrix solve (MatrixType &typ, const FloatMatrix& b) const;
  FloatMatrix solve (MatrixType &typ, const FloatMatrix& b, octave_idx_type& info) const;
  FloatMatrix solve (MatrixType &typ, const FloatMatrix& b, octave_idx_type& info,
                float& rcon) const;
  FloatMatrix solve (MatrixType &typ, const FloatMatrix& b, octave_idx_type& info,
                float& rcon, solve_singularity_handler sing_handler,
                bool singular_fallback = true, blas_trans_type transt = blas_no_trans) const;

  FloatComplexMatrix solve (MatrixType &typ, const FloatComplexMatrix& b) const;
  FloatComplexMatrix solve (MatrixType &typ, const FloatComplexMatrix& b,
                       octave_idx_type& info) const;
  FloatComplexMatrix solve (MatrixType &typ, const FloatComplexMatrix& b,
                       octave_idx_type& info, float& rcon) const;
  FloatComplexMatrix solve (MatrixType &typ, const FloatComplexMatrix& b,
                       octave_idx_type& info, float& rcon,
                       solve_singularity_handler sing_handler,
                       bool singular_fallback = true,
                       blas_trans_type transt = blas_no_trans) const;

  FloatColumnVector solve (MatrixType &typ, const FloatColumnVector& b) const;
  FloatColumnVector solve (MatrixType &typ, const FloatColumnVector& b,
                      octave_idx_type& info) const;
  FloatColumnVector solve (MatrixType &typ, const FloatColumnVector& b,
                      octave_idx_type& info, float& rcon) const;
  FloatColumnVector solve (MatrixType &typ, const FloatColumnVector& b,
                      octave_idx_type& info, float& rcon,
                      solve_singularity_handler sing_handler,
                      blas_trans_type transt = blas_no_trans) const;

  FloatComplexColumnVector solve (MatrixType &typ,
                             const FloatComplexColumnVector& b) const;
  FloatComplexColumnVector solve (MatrixType &typ, const FloatComplexColumnVector& b,
                             octave_idx_type& info) const;
  FloatComplexColumnVector solve (MatrixType &typ, const FloatComplexColumnVector& b,
                             octave_idx_type& info, float& rcon) const;
  FloatComplexColumnVector solve (MatrixType &typ, const FloatComplexColumnVector& b,
                             octave_idx_type& info, float& rcon,
                             solve_singularity_handler sing_handler, blas_trans_type transt = blas_no_trans) const;

  // Generic interface to solver with probing of type
  FloatMatrix solve (const FloatMatrix& b) const;
  FloatMatrix solve (const FloatMatrix& b, octave_idx_type& info) const;
  FloatMatrix solve (const FloatMatrix& b, octave_idx_type& info, float& rcon) const;
  FloatMatrix solve (const FloatMatrix& b, octave_idx_type& info, float& rcon,
                     solve_singularity_handler sing_handler,
                     blas_trans_type transt = blas_no_trans) const;

  FloatComplexMatrix solve (const FloatComplexMatrix& b) const;
  FloatComplexMatrix solve (const FloatComplexMatrix& b, octave_idx_type& info) const;
  FloatComplexMatrix solve (const FloatComplexMatrix& b, octave_idx_type& info, float& rcon) const;
  FloatComplexMatrix solve (const FloatComplexMatrix& b, octave_idx_type& info, float& rcon,
                            solve_singularity_handler sing_handler,
                            blas_trans_type transt = blas_no_trans) const;

  FloatColumnVector solve (const FloatColumnVector& b) const;
  FloatColumnVector solve (const FloatColumnVector& b, octave_idx_type& info) const;
  FloatColumnVector solve (const FloatColumnVector& b, octave_idx_type& info, float& rcon) const;
  FloatColumnVector solve (const FloatColumnVector& b, octave_idx_type& info, float& rcon,
                           solve_singularity_handler sing_handler,
                           blas_trans_type transt = blas_no_trans) const;

  FloatComplexColumnVector solve (const FloatComplexColumnVector& b) const;
  FloatComplexColumnVector solve (const FloatComplexColumnVector& b, octave_idx_type& info) const;
  FloatComplexColumnVector solve (const FloatComplexColumnVector& b, octave_idx_type& info,
                                  float& rcon) const;
  FloatComplexColumnVector solve (const FloatComplexColumnVector& b, octave_idx_type& info,
                                  float& rcon, solve_singularity_handler sing_handler,
                                  blas_trans_type transt = blas_no_trans) const;

  // Singular solvers
  FloatMatrix lssolve (const FloatMatrix& b) const;
  FloatMatrix lssolve (const FloatMatrix& b, octave_idx_type& info) const;
  FloatMatrix lssolve (const FloatMatrix& b, octave_idx_type& info,
                  octave_idx_type& rank) const;
  FloatMatrix lssolve (const FloatMatrix& b, octave_idx_type& info,
                  octave_idx_type& rank, float& rcon) const;

  FloatComplexMatrix lssolve (const FloatComplexMatrix& b) const;
  FloatComplexMatrix lssolve (const FloatComplexMatrix& b, octave_idx_type& info) const;
  FloatComplexMatrix lssolve (const FloatComplexMatrix& b, octave_idx_type& info,
                         octave_idx_type& rank) const;
  FloatComplexMatrix lssolve (const FloatComplexMatrix& b, octave_idx_type& info,
                         octave_idx_type& rank, float &rcon) const;

  FloatColumnVector lssolve (const FloatColumnVector& b) const;
  FloatColumnVector lssolve (const FloatColumnVector& b, octave_idx_type& info) const;
  FloatColumnVector lssolve (const FloatColumnVector& b, octave_idx_type& info,
                        octave_idx_type& rank) const;
  FloatColumnVector lssolve (const FloatColumnVector& b, octave_idx_type& info,
                        octave_idx_type& rank, float& rcon) const;

  FloatComplexColumnVector lssolve (const FloatComplexColumnVector& b) const;
  FloatComplexColumnVector lssolve (const FloatComplexColumnVector& b,
                               octave_idx_type& info) const;
  FloatComplexColumnVector lssolve (const FloatComplexColumnVector& b,
                               octave_idx_type& info,
                               octave_idx_type& rank) const;
  FloatComplexColumnVector lssolve (const FloatComplexColumnVector& b,
                               octave_idx_type& info,
                               octave_idx_type& rank, float& rcon) const;

  FloatMatrix& operator += (const FloatDiagMatrix& a);
  FloatMatrix& operator -= (const FloatDiagMatrix& a);

  // unary operations

  boolMatrix operator ! (void) const;

  // other operations

  bool any_element_is_negative (bool = false) const;
  bool any_element_is_nan (void) const;
  bool any_element_is_inf_or_nan (void) const;
  bool any_element_not_one_or_zero (void) const;
  bool all_elements_are_int_or_inf_or_nan (void) const;
  bool all_integers (float& max_val, float& min_val) const;
  bool too_large_for_float (void) const;

  boolMatrix all (int dim = -1) const;
  boolMatrix any (int dim = -1) const;

  FloatMatrix cumprod (int dim = -1) const;
  FloatMatrix cumsum (int dim = -1) const;
  FloatMatrix prod (int dim = -1) const;
  FloatMatrix sum (int dim = -1) const;
  FloatMatrix sumsq (int dim = -1) const;
  FloatMatrix abs (void) const;

  FloatMatrix diag (octave_idx_type k = 0) const;

  FloatColumnVector row_min (void) const;
  FloatColumnVector row_max (void) const;

  FloatColumnVector row_min (Array<octave_idx_type>& index) const;
  FloatColumnVector row_max (Array<octave_idx_type>& index) const;

  FloatRowVector column_min (void) const;
  FloatRowVector column_max (void) const;

  FloatRowVector column_min (Array<octave_idx_type>& index) const;
  FloatRowVector column_max (Array<octave_idx_type>& index) const;

  // i/o

  friend OCTAVE_API std::ostream& operator << (std::ostream& os, const FloatMatrix& a);
  friend OCTAVE_API std::istream& operator >> (std::istream& is, FloatMatrix& a);

  static float resize_fill_value (void) { return 0; }

};

// Publish externally used friend functions.

extern OCTAVE_API FloatMatrix real (const FloatComplexMatrix& a);
extern OCTAVE_API FloatMatrix imag (const FloatComplexMatrix& a);

// column vector by row vector -> matrix operations

extern OCTAVE_API FloatMatrix operator * (const FloatColumnVector& a, const FloatRowVector& b);

// Other functions.

extern OCTAVE_API FloatMatrix Givens (float, float);

extern OCTAVE_API FloatMatrix Sylvester (const FloatMatrix&, const FloatMatrix&, const FloatMatrix&);

extern OCTAVE_API FloatMatrix xgemm (const FloatMatrix& a, const FloatMatrix& b,
                                     blas_trans_type transa = blas_no_trans,
                                     blas_trans_type transb = blas_no_trans);

extern OCTAVE_API FloatMatrix operator * (const FloatMatrix& a, const FloatMatrix& b);

extern OCTAVE_API FloatMatrix min (float d, const FloatMatrix& m);
extern OCTAVE_API FloatMatrix min (const FloatMatrix& m, float d);
extern OCTAVE_API FloatMatrix min (const FloatMatrix& a, const FloatMatrix& b);

extern OCTAVE_API FloatMatrix max (float d, const FloatMatrix& m);
extern OCTAVE_API FloatMatrix max (const FloatMatrix& m, float d);
extern OCTAVE_API FloatMatrix max (const FloatMatrix& a, const FloatMatrix& b);

extern OCTAVE_API FloatMatrix linspace (const FloatColumnVector& x1,
                                        const FloatColumnVector& x2,
                                        octave_idx_type n);


MS_CMP_OP_DECLS (FloatMatrix, float, OCTAVE_API)
MS_BOOL_OP_DECLS (FloatMatrix, float, OCTAVE_API)

SM_CMP_OP_DECLS (float, FloatMatrix, OCTAVE_API)
SM_BOOL_OP_DECLS (float, FloatMatrix, OCTAVE_API)

MM_CMP_OP_DECLS (FloatMatrix, FloatMatrix, OCTAVE_API)
MM_BOOL_OP_DECLS (FloatMatrix, FloatMatrix, OCTAVE_API)

MARRAY_FORWARD_DEFS (MArray, FloatMatrix, float)

template <class T>
void read_int (std::istream& is, bool swap_bytes, T& val);

#endif
