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make_int.cc
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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.
*/
/* Modified by Klaus Gebhardt, 1996 */
#include <octave/config.h>
#include <cstdlib>
#include <string>
class ostream;
#include <octave/lo-utils.h>
#include <octave/mx-base.h>
#include <octave/str-vec.h>
#include <octave/defun-dld.h>
#include <octave/error.h>
#include <octave/gripes.h>
#include <octave/mappers.h>
#include <octave/oct-obj.h>
#include <octave/ops.h>
#include <octave/ov-base.h>
#include <octave/ov-typeinfo.h>
#include <octave/ov.h>
#include <octave/ov-scalar.h>
#include <octave/pager.h>
#include <octave/pr-output.h>
#include <octave/symtab.h>
#include <octave/variables.h>
class Octave_map;
class octave_value_list;
class tree_walker;
// Integer values.
class
octave_integer : public octave_base_value
{
public:
octave_integer (void)
: octave_base_value (), scalar (0) { }
octave_integer (int i)
: octave_base_value (), scalar (i) { }
octave_integer (const octave_integer& s)
: octave_base_value (), scalar (s.scalar) { }
~octave_integer (void) { }
octave_value *clone (void) { return new octave_integer (*this); }
#if 0
void *operator new (size_t size);
void operator delete (void *p, size_t size);
#endif
idx_vector index_vector (void) const { return idx_vector ((double) scalar); }
int rows (void) const { return 1; }
int columns (void) const { return 1; }
bool is_defined (void) const { return true; }
bool is_real_scalar (void) const { return true; }
octave_value all (void) const { return (scalar != 0); }
octave_value any (void) const { return (scalar != 0); }
bool is_real_type (void) const { return true; }
bool is_scalar_type (void) const { return true; }
bool is_numeric_type (void) const { return true; }
bool valid_as_scalar_index (void) const
{ return scalar == 1; }
bool valid_as_zero_index (void) const
{ return scalar == 0; }
bool is_true (void) const { return (scalar != 0); }
double double_value (bool = false) const { return (double) scalar; }
int integer_value (bool = false) const { return scalar; }
Matrix matrix_value (bool = false) const { return Matrix (1, 1, scalar); }
Complex complex_value (bool = false) const { return scalar; }
ComplexMatrix complex_matrix_value (bool = false) const
{ return ComplexMatrix (1, 1, Complex (scalar)); }
octave_value not (void) const { return octave_value (! scalar); }
octave_value uminus (void) const { return octave_value (- scalar); }
octave_value transpose (void) const { return octave_value (scalar); }
octave_value hermitian (void) const { return octave_value (scalar); }
void increment (void) { ++scalar; }
void decrement (void) { --scalar; }
void print (ostream& os, bool pr_as_read_syntax = false);
int type_id (void) const { return t_id; }
string type_name (void) const { return t_name; }
static int static_type_id (void) { return t_id; }
static void register_type (void)
{ t_id = octave_value_typeinfo::register_type (t_name); }
private:
int scalar;
static int t_id;
static const string t_name;
};
int octave_integer::t_id = -1;
const string octave_integer::t_name ("integer");
void
octave_integer::print (ostream& os, bool pr_as_read_syntax)
{
octave_print_internal (os, scalar, pr_as_read_syntax);
}
// integer by integer ops.
static octave_value
add (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () + v2.integer_value ());
}
static octave_value
sub (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () - v2.integer_value ());
}
static octave_value
mul (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () * v2.integer_value ());
}
static octave_value
div (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
int d = v2.integer_value ();
if (d == 0)
gripe_divide_by_zero ();
return new octave_integer (v1.integer_value () / d);
}
static octave_value
i_s_div (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_scalar&);
double d = v2.double_value ();
if (d == 0.0)
gripe_divide_by_zero ();
return new octave_scalar (v1.double_value () / d);
}
static octave_value
ldiv (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
int d = v1.integer_value ();
if (d == 0)
gripe_divide_by_zero ();
return new octave_integer (v2.integer_value () / d);
}
static octave_value
lt (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () < v2.integer_value ());
}
static octave_value
le (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () <= v2.integer_value ());
}
static octave_value
eq (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () == v2.integer_value ());
}
static octave_value
ge (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () >= v2.integer_value ());
}
static octave_value
gt (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () > v2.integer_value ());
}
static octave_value
ne (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () != v2.integer_value ());
}
static octave_value
el_mul (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () * v2.integer_value ());
}
static octave_value
el_div (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
int d = v2.integer_value ();
if (d == 0)
gripe_divide_by_zero ();
return new octave_integer (v1.integer_value () / d);
}
static octave_value
el_ldiv (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
int d = v1.integer_value ();
if (d == 0)
gripe_divide_by_zero ();
return new octave_integer (v2.integer_value () / d);
}
static octave_value
el_and (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () && v2.integer_value ());
}
static octave_value
el_or (const octave_value& a1, const octave_value& a2)
{
CAST_BINOP_ARGS (const octave_integer&, const octave_integer&);
return new octave_integer (v1.integer_value () || v2.integer_value ());
}
DEFUN_DLD (make_int, args, ,
"int_val = make_int (val)\n\
\n\
Creates an integer variable from VAL.")
{
static bool type_loaded = false;
if (! type_loaded)
{
octave_integer::register_type ();
cerr << "installing integer type at type-id = "
<< octave_integer::static_type_id () << "\n";
INSTALL_BINOP (add, octave_integer, octave_integer, add);
INSTALL_BINOP (sub, octave_integer, octave_integer, sub);
INSTALL_BINOP (mul, octave_integer, octave_integer, mul);
INSTALL_BINOP (div, octave_integer, octave_integer, div);
INSTALL_BINOP (ldiv, octave_integer, octave_integer, ldiv);
INSTALL_BINOP (lt, octave_integer, octave_integer, lt);
INSTALL_BINOP (le, octave_integer, octave_integer, le);
INSTALL_BINOP (eq, octave_integer, octave_integer, eq);
INSTALL_BINOP (ge, octave_integer, octave_integer, ge);
INSTALL_BINOP (gt, octave_integer, octave_integer, gt);
INSTALL_BINOP (ne, octave_integer, octave_integer, ne);
INSTALL_BINOP (el_mul, octave_integer, octave_integer, el_mul);
INSTALL_BINOP (el_div, octave_integer, octave_integer, el_div);
INSTALL_BINOP (el_ldiv, octave_integer, octave_integer, el_ldiv);
INSTALL_BINOP (el_and, octave_integer, octave_integer, el_and);
INSTALL_BINOP (el_or, octave_integer, octave_integer, el_or);
INSTALL_BINOP (div, octave_integer, octave_scalar, i_s_div);
}
octave_value retval;
if (args.length () == 1)
{
double d = args(0).double_value ();
if (! error_state)
retval = octave_value (new octave_integer (NINT (d)));
}
else
usage ("make_int");
return retval;
}
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/