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ov-re-mat.cc
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1996-11-07
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/*
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 implementation
#endif
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "lo-ieee.h"
#include "lo-utils.h"
#include "mx-base.h"
#include "gripes.h"
#include "mappers.h"
#include "oct-obj.h"
#include "ops.h"
#include "ov-scalar.h"
#include "ov-re-mat.h"
#include "pr-output.h"
octave_allocator
octave_matrix::allocator (sizeof (octave_matrix));
int
octave_matrix::t_id (-1);
const string
octave_matrix::t_name ("matrix");
octave_matrix::octave_matrix (const RowVector& v, int pcv)
: octave_base_value (),
matrix ((pcv < 0 && Vprefer_column_vectors) || pcv
? Matrix (v.transpose ()) : Matrix (v)) { }
octave_matrix::octave_matrix (const ColumnVector& v, int pcv)
: octave_base_value (),
matrix ((pcv < 0 && Vprefer_column_vectors) || pcv
? Matrix (v) : Matrix (v.transpose ())) { }
#include <iostream.h>
octave_value *
octave_matrix::try_narrowing_conversion (void)
{
octave_value *retval = 0;
int nr = matrix.rows ();
int nc = matrix.cols ();
if (nr == 1 && nc == 1)
retval = new octave_scalar (matrix (0, 0));
return retval;
}
octave_value
octave_matrix::index (const octave_value_list& idx) const
{
octave_value retval;
int len = idx.length ();
switch (len)
{
case 2:
{
idx_vector i = idx (0).index_vector ();
idx_vector j = idx (1).index_vector ();
retval = Matrix (matrix.index (i, j));
}
break;
case 1:
{
idx_vector i = idx (0).index_vector ();
retval = Matrix (matrix.index (i));
}
break;
default:
error ("invalid number of indices (%d) for matrix value", len);
break;
}
return retval;
}
extern void assign (Array2<double>&, const Array2<double>&);
void
octave_matrix::assign (const octave_value_list& idx, const Matrix& rhs)
{
int len = idx.length ();
switch (len)
{
case 2:
{
idx_vector i = idx (0).index_vector ();
idx_vector j = idx (1).index_vector ();
matrix.set_index (i);
matrix.set_index (j);
::assign (matrix, rhs);
}
break;
case 1:
{
idx_vector i = idx (0).index_vector ();
matrix.set_index (i);
::assign (matrix, rhs);
}
break;
default:
error ("invalid number of indices (%d) for indexed matrix assignment",
len);
break;
}
}
bool
octave_matrix::valid_as_scalar_index (void) const
{
// XXX FIXME XXX
return false;
}
bool
octave_matrix::is_true (void) const
{
bool retval = false;
if (rows () == 0 || columns () == 0)
{
int flag = Vpropagate_empty_matrices;
if (flag < 0)
warning ("empty matrix used in conditional expression");
else if (flag == 0)
error ("empty matrix used in conditional expression");
}
else
{
Matrix m = (matrix.all ()) . all ();
retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0);
}
return retval;
}
double
octave_matrix::double_value (bool) const
{
double retval = octave_NaN;
// XXX FIXME XXX -- maybe this should be a function, valid_as_scalar()
if ((rows () == 1 && columns () == 1)
|| (Vdo_fortran_indexing && rows () > 0 && columns () > 0))
retval = matrix (0, 0);
else
gripe_invalid_conversion ("real matrix", "real scalar");
return retval;
}
Complex
octave_matrix::complex_value (bool) const
{
Complex retval (octave_NaN, octave_NaN);
if ((rows () == 1 && columns () == 1)
|| (Vdo_fortran_indexing && rows () > 0 && columns () > 0))
retval = matrix (0, 0);
else
gripe_invalid_conversion ("real matrix", "complex scalar");
return retval;
}
octave_value
octave_matrix::convert_to_str (void) const
{
octave_value retval;
int nr = matrix.rows ();
int nc = matrix.columns ();
if (nr == 0 && nc == 0)
{
char s = '\0';
retval = octave_value (&s);
}
else
{
if (nr == 0 || nc == 0)
{
char s = '\0';
retval = octave_value (&s);
}
else
{
charMatrix chm (nr, nc);
for (int j = 0; j < nc; j++)
{
for (int i = 0; i < nr; i++)
{
double d = matrix (i, j);
if (xisnan (d))
{
::error ("invalid conversion from NaN to character");
return retval;
}
else
{
// XXX FIXME XXX -- warn about out of range
// conversions?
int ival = NINT (d);
chm (i, j) = (char) ival;
}
}
}
retval = octave_value (chm, 1);
}
}
return retval;
}
void
octave_matrix::print (ostream& os, bool pr_as_read_syntax)
{
octave_print_internal (os, matrix, pr_as_read_syntax, struct_indent);
}
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/