/usr/include/octave-3.8.1/octave/ov-base-int.cc is in liboctave-dev 3.8.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 2004-2013 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/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <iostream>
#include <limits>
#include <vector>
#include "lo-ieee.h"
#include "lo-utils.h"
#include "mx-base.h"
#include "quit.h"
#include "oct-locbuf.h"
#include "defun.h"
#include "gripes.h"
#include "oct-obj.h"
#include "oct-lvalue.h"
#include "oct-stream.h"
#include "ops.h"
#include "ov-base.h"
#include "ov-base-mat.h"
#include "ov-base-mat.cc"
#include "ov-base-scalar.h"
#include "ov-base-scalar.cc"
#include "ov-base-int.h"
#include "ov-int-traits.h"
#include "pr-output.h"
#include "variables.h"
#include "byte-swap.h"
#include "ls-oct-ascii.h"
#include "ls-utils.h"
#include "ls-hdf5.h"
// We have all the machinery below (octave_base_int_helper and
// octave_base_int_helper_traits) to avoid a few warnings from GCC
// about comparisons always false due to limited range of data types.
// Ugh. The cure may be worse than the disease.
template <class T, bool is_signed = true, bool can_be_too_big = true>
struct octave_base_int_helper
{
static bool
char_value_out_of_range (T val)
{
return val < 0 || val > std::numeric_limits<unsigned char>::max ();
}
};
template <class T>
struct octave_base_int_helper<T, false, false>
{
static bool char_value_out_of_range (T) { return false; }
};
template <class T>
struct octave_base_int_helper<T, false, true>
{
static bool char_value_out_of_range (T val)
{
return val > std::numeric_limits<unsigned char>::max ();
}
};
template <class T>
struct octave_base_int_helper<T, true, false>
{
static bool char_value_out_of_range (T val) { return val < 0; }
};
// For all types other than char, signed char, and unsigned char, we
// assume that the upper limit for the range of allowable values is
// larger than the range for unsigned char. If that's not true, we
// are still OK, but will see the warnings again for any other types
// that do not meet this assumption.
template <class T>
struct octave_base_int_helper_traits
{
static const bool can_be_larger_than_uchar_max = true;
};
template <>
struct octave_base_int_helper_traits<char>
{
static const bool can_be_larger_than_uchar_max = false;
};
template <>
struct octave_base_int_helper_traits<signed char>
{
static const bool can_be_larger_than_uchar_max = false;
};
template <>
struct octave_base_int_helper_traits<unsigned char>
{
static const bool can_be_larger_than_uchar_max = false;
};
template <class T>
octave_base_value *
octave_base_int_matrix<T>::try_narrowing_conversion (void)
{
octave_base_value *retval = 0;
if (this->matrix.nelem () == 1)
retval = new typename octave_value_int_traits<T>::scalar_type
(this->matrix (0));
return retval;
}
template <class T>
octave_value
octave_base_int_matrix<T>::convert_to_str_internal (bool, bool, char type) const
{
octave_value retval;
dim_vector dv = this->dims ();
octave_idx_type nel = dv.numel ();
charNDArray chm (dv);
bool warned = false;
for (octave_idx_type i = 0; i < nel; i++)
{
octave_quit ();
typename T::element_type tmp = this->matrix(i);
typedef typename T::element_type::val_type val_type;
val_type ival = tmp.value ();
static const bool is_signed = std::numeric_limits<val_type>::is_signed;
static const bool can_be_larger_than_uchar_max
= octave_base_int_helper_traits<val_type>::can_be_larger_than_uchar_max;
if (octave_base_int_helper<val_type, is_signed,
can_be_larger_than_uchar_max>::char_value_out_of_range (ival))
{
// FIXME: is there something better we could do?
ival = 0;
if (! warned)
{
::warning ("range error for conversion to character value");
warned = true;
}
}
else
chm (i) = static_cast<char> (ival);
}
retval = octave_value (chm, type);
return retval;
}
template <class T>
bool
octave_base_int_matrix<T>::save_ascii (std::ostream& os)
{
dim_vector d = this->dims ();
os << "# ndims: " << d.length () << "\n";
for (int i = 0; i < d.length (); i++)
os << " " << d (i);
os << "\n" << this->matrix;
return true;
}
template <class T>
bool
octave_base_int_matrix<T>::load_ascii (std::istream& is)
{
int mdims = 0;
bool success = true;
if (extract_keyword (is, "ndims", mdims, true))
{
if (mdims >= 0)
{
dim_vector dv;
dv.resize (mdims);
for (int i = 0; i < mdims; i++)
is >> dv(i);
T tmp(dv);
is >> tmp;
if (!is)
{
error ("load: failed to load matrix constant");
success = false;
}
this->matrix = tmp;
}
else
{
error ("load: failed to extract number of rows and columns");
success = false;
}
}
else
error ("load: failed to extract number of dimensions");
return success;
}
template <class T>
bool
octave_base_int_matrix<T>::save_binary (std::ostream& os, bool&)
{
dim_vector d = this->dims ();
if (d.length () < 1)
return false;
// Use negative value for ndims to differentiate with old format!!
int32_t tmp = - d.length ();
os.write (reinterpret_cast<char *> (&tmp), 4);
for (int i=0; i < d.length (); i++)
{
tmp = d(i);
os.write (reinterpret_cast<char *> (&tmp), 4);
}
os.write (reinterpret_cast<const char *> (this->matrix.data ()),
this->byte_size ());
return true;
}
template <class T>
bool
octave_base_int_matrix<T>::load_binary (std::istream& is, bool swap,
oct_mach_info::float_format )
{
int32_t mdims;
if (! is.read (reinterpret_cast<char *> (&mdims), 4))
return false;
if (swap)
swap_bytes<4> (&mdims);
if (mdims >= 0)
return false;
mdims = - mdims;
int32_t di;
dim_vector dv;
dv.resize (mdims);
for (int i = 0; i < mdims; i++)
{
if (! is.read (reinterpret_cast<char *> (&di), 4))
return false;
if (swap)
swap_bytes<4> (&di);
dv(i) = di;
}
// Convert an array with a single dimension to be a row vector.
// Octave should never write files like this, other software
// might.
if (mdims == 1)
{
mdims = 2;
dv.resize (mdims);
dv(1) = dv(0);
dv(0) = 1;
}
T m (dv);
if (! is.read (reinterpret_cast<char *> (m.fortran_vec ()), m.byte_size ()))
return false;
if (swap)
{
int nel = dv.numel ();
int bytes = nel / m.byte_size ();
for (int i = 0; i < nel; i++)
switch (bytes)
{
case 8:
swap_bytes<8> (&m(i));
break;
case 4:
swap_bytes<4> (&m(i));
break;
case 2:
swap_bytes<2> (&m(i));
break;
case 1:
default:
break;
}
}
this->matrix = m;
return true;
}
#if defined (HAVE_HDF5)
template <class T>
bool
octave_base_int_matrix<T>::save_hdf5 (hid_t loc_id, const char *name, bool)
{
hid_t save_type_hid = HDF5_SAVE_TYPE;
bool retval = true;
dim_vector dv = this->dims ();
int empty = save_hdf5_empty (loc_id, name, dv);
if (empty)
return (empty > 0);
int rank = dv.length ();
hid_t space_hid = -1, data_hid = -1;
OCTAVE_LOCAL_BUFFER (hsize_t, hdims, rank);
// Octave uses column-major, while HDF5 uses row-major ordering
for (int i = 0; i < rank; i++)
hdims[i] = dv (rank-i-1);
space_hid = H5Screate_simple (rank, hdims, 0);
if (space_hid < 0) return false;
#if HAVE_HDF5_18
data_hid = H5Dcreate (loc_id, name, save_type_hid, space_hid,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
#else
data_hid = H5Dcreate (loc_id, name, save_type_hid, space_hid,
H5P_DEFAULT);
#endif
if (data_hid < 0)
{
H5Sclose (space_hid);
return false;
}
retval = H5Dwrite (data_hid, save_type_hid, H5S_ALL, H5S_ALL,
H5P_DEFAULT, this->matrix.data ()) >= 0;
H5Dclose (data_hid);
H5Sclose (space_hid);
return retval;
}
template <class T>
bool
octave_base_int_matrix<T>::load_hdf5 (hid_t loc_id, const char *name)
{
hid_t save_type_hid = HDF5_SAVE_TYPE;
bool retval = false;
dim_vector dv;
int empty = load_hdf5_empty (loc_id, name, dv);
if (empty > 0)
this->matrix.resize (dv);
if (empty)
return (empty > 0);
#if HAVE_HDF5_18
hid_t data_hid = H5Dopen (loc_id, name, H5P_DEFAULT);
#else
hid_t data_hid = H5Dopen (loc_id, name);
#endif
hid_t space_id = H5Dget_space (data_hid);
hsize_t rank = H5Sget_simple_extent_ndims (space_id);
if (rank < 1)
{
H5Sclose (space_id);
H5Dclose (data_hid);
return false;
}
OCTAVE_LOCAL_BUFFER (hsize_t, hdims, rank);
OCTAVE_LOCAL_BUFFER (hsize_t, maxdims, rank);
H5Sget_simple_extent_dims (space_id, hdims, maxdims);
// Octave uses column-major, while HDF5 uses row-major ordering
if (rank == 1)
{
dv.resize (2);
dv(0) = 1;
dv(1) = hdims[0];
}
else
{
dv.resize (rank);
for (hsize_t i = 0, j = rank - 1; i < rank; i++, j--)
dv(j) = hdims[i];
}
T m (dv);
if (H5Dread (data_hid, save_type_hid, H5S_ALL, H5S_ALL,
H5P_DEFAULT, m.fortran_vec ()) >= 0)
{
retval = true;
this->matrix = m;
}
H5Sclose (space_id);
H5Dclose (data_hid);
return retval;
}
#endif
template <class T>
void
octave_base_int_matrix<T>::print_raw (std::ostream& os,
bool pr_as_read_syntax) const
{
octave_print_internal (os, this->matrix, pr_as_read_syntax,
this->current_print_indent_level ());
}
template <class T>
octave_value
octave_base_int_scalar<T>::convert_to_str_internal (bool, bool, char type) const
{
octave_value retval;
T tmp = this->scalar;
typedef typename T::val_type val_type;
val_type ival = tmp.value ();
static const bool is_signed = std::numeric_limits<val_type>::is_signed;
static const bool can_be_larger_than_uchar_max
= octave_base_int_helper_traits<val_type>::can_be_larger_than_uchar_max;
if (octave_base_int_helper<val_type, is_signed,
can_be_larger_than_uchar_max>::char_value_out_of_range (ival))
{
// FIXME: is there something better we could do?
ival = 0;
::warning ("range error for conversion to character value");
}
else
retval = octave_value (std::string (1, static_cast<char> (ival)), type);
return retval;
}
template <class T>
bool
octave_base_int_scalar<T>::save_ascii (std::ostream& os)
{
os << this->scalar << "\n";
return true;
}
template <class T>
bool
octave_base_int_scalar<T>::load_ascii (std::istream& is)
{
is >> this->scalar;
if (!is)
{
error ("load: failed to load scalar constant");
return false;
}
return true;
}
template <class T>
bool
octave_base_int_scalar<T>::save_binary (std::ostream& os, bool&)
{
os.write (reinterpret_cast<char *> (&(this->scalar)), this->byte_size ());
return true;
}
template <class T>
bool
octave_base_int_scalar<T>::load_binary (std::istream& is, bool swap,
oct_mach_info::float_format)
{
T tmp;
if (! is.read (reinterpret_cast<char *> (&tmp), this->byte_size ()))
return false;
if (swap)
switch (this->byte_size ())
{
case 8:
swap_bytes<8> (&tmp);
break;
case 4:
swap_bytes<4> (&tmp);
break;
case 2:
swap_bytes<2> (&tmp);
break;
case 1:
default:
break;
}
this->scalar = tmp;
return true;
}
#if defined (HAVE_HDF5)
template <class T>
bool
octave_base_int_scalar<T>::save_hdf5 (hid_t loc_id, const char *name, bool)
{
hid_t save_type_hid = HDF5_SAVE_TYPE;
bool retval = true;
hsize_t dimens[3];
hid_t space_hid = -1, data_hid = -1;
space_hid = H5Screate_simple (0, dimens, 0);
if (space_hid < 0) return false;
#if HAVE_HDF5_18
data_hid = H5Dcreate (loc_id, name, save_type_hid, space_hid,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
#else
data_hid = H5Dcreate (loc_id, name, save_type_hid, space_hid,
H5P_DEFAULT);
#endif
if (data_hid < 0)
{
H5Sclose (space_hid);
return false;
}
retval = H5Dwrite (data_hid, save_type_hid, H5S_ALL, H5S_ALL,
H5P_DEFAULT, &(this->scalar)) >= 0;
H5Dclose (data_hid);
H5Sclose (space_hid);
return retval;
}
template <class T>
bool
octave_base_int_scalar<T>::load_hdf5 (hid_t loc_id, const char *name)
{
hid_t save_type_hid = HDF5_SAVE_TYPE;
#if HAVE_HDF5_18
hid_t data_hid = H5Dopen (loc_id, name, H5P_DEFAULT);
#else
hid_t data_hid = H5Dopen (loc_id, name);
#endif
hid_t space_id = H5Dget_space (data_hid);
hsize_t rank = H5Sget_simple_extent_ndims (space_id);
if (rank != 0)
{
H5Dclose (data_hid);
return false;
}
T tmp;
if (H5Dread (data_hid, save_type_hid, H5S_ALL, H5S_ALL,
H5P_DEFAULT, &tmp) < 0)
{
H5Dclose (data_hid);
return false;
}
this->scalar = tmp;
H5Dclose (data_hid);
return true;
}
#endif
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