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// Template array classes with like-type math ops
/*
Copyright (C) 1996 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 2, 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, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if defined (__GNUG__)
#pragma interface
#endif
#if !defined (octave_MDiagArray2_h)
#define octave_MDiagArray2_h 1
#include "DiagArray2.h"
#include "MArray2.h"
// Two dimensional diagonal array with math ops.
template <class T>
class MDiagArray2 : public DiagArray2<T>
{
protected:
MDiagArray2 (T *d, int r, int c) : DiagArray2<T> (d, r, c) { }
public:
MDiagArray2 (void) : DiagArray2<T> () { }
MDiagArray2 (int r, int c) : DiagArray2<T> (r, c) { }
MDiagArray2 (int r, int c, const T& val) : DiagArray2<T> (r, c, val) { }
MDiagArray2 (const Array<T>& a) : DiagArray2<T> (a) { }
MDiagArray2 (const DiagArray2<T>& a) : DiagArray2<T> (a) { }
MDiagArray2 (const MDiagArray2<T>& a) : DiagArray2<T> (a) { }
~MDiagArray2 (void) { }
MDiagArray2<T>& operator = (const MDiagArray2<T>& a)
{
DiagArray2<T>::operator = (a);
return *this;
}
operator MArray2<T> () const
{
MArray2<T> retval (nr, nc, T (0));
int len = nr < nc ? nr : nc;
for (int i = 0; i < len; i++)
retval.xelem (i, i) = xelem (i, i);
return retval;
}
// element by element MDiagArray2 by MDiagArray2 ops
friend MDiagArray2<T>&
operator += (MDiagArray2<T>& a, const MDiagArray2<T>& b);
friend MDiagArray2<T>&
operator -= (MDiagArray2<T>& a, const MDiagArray2<T>& b);
// element by element MDiagArray2 by scalar ops
friend MDiagArray2<T> operator * (const MDiagArray2<T>& a, const T& s);
friend MDiagArray2<T> operator / (const MDiagArray2<T>& a, const T& s);
// element by element scalar by MDiagArray2 ops
friend MDiagArray2<T> operator * (const T& s, const MDiagArray2<T>& a);
// element by element MDiagArray2 by MDiagArray2 ops
friend MDiagArray2<T>
operator + (const MDiagArray2<T>& a, const MDiagArray2<T>& b);
friend MDiagArray2<T>
operator - (const MDiagArray2<T>& a, const MDiagArray2<T>& b);
friend MDiagArray2<T>
product (const MDiagArray2<T>& a, const MDiagArray2<T>& b);
friend MDiagArray2<T> operator - (const MDiagArray2<T>& a);
};
#define INSTANTIATE_MDIAGARRAY_FRIENDS(T) \
template MDiagArray2<T>& operator += (MDiagArray2<T>& a, const MDiagArray2<T>& b); \
template MDiagArray2<T>& operator -= (MDiagArray2<T>& a, const MDiagArray2<T>& b); \
template MDiagArray2<T> operator * (const MDiagArray2<T>& a, const T& s); \
template MDiagArray2<T> operator / (const MDiagArray2<T>& a, const T& s); \
template MDiagArray2<T> operator * (const T& s, const MDiagArray2<T>& a); \
template MDiagArray2<T> operator + (const MDiagArray2<T>& a, const MDiagArray2<T>& b); \
template MDiagArray2<T> operator - (const MDiagArray2<T>& a, const MDiagArray2<T>& b); \
template MDiagArray2<T> product (const MDiagArray2<T>& a, const MDiagArray2<T>& b); \
template MDiagArray2<T> operator - (const MDiagArray2<T>& a);
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/
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