/usr/include/octave-4.0.0/octave/oct-errno.h is in liboctave-dev 4.0.0-3ubuntu9.
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) 2005-2015 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_oct_errno_h)
#define octave_oct_errno_h 1
#include <cerrno>
#include <map>
#include <string>
#include "oct-map.h"
class
octave_errno
{
protected:
octave_errno (void);
public:
~octave_errno (void) { }
static bool instance_ok (void);
static void cleanup_instance (void) { delete instance; instance = 0; }
static int lookup (const std::string& name);
static octave_scalar_map list (void);
static int get (void) { return errno; }
static int set (int val)
{
int retval = errno;
errno = val;
return retval;
}
private:
std::map<std::string, int> errno_tbl;
static octave_errno *instance;
int do_lookup (const std::string& name);
octave_scalar_map do_list (void);
};
#endif
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