common/ac/limits.h

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//
//      aegis - a project change supervisor
//      Copyright (C) 1994-1996, 2004-2006, 2008 Peter Miller
//
//      This program 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.
//
//      This program 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 this program. If not, see
//      <http://www.gnu.org/licenses/>.
//

#ifndef COMMON_AC_LIMITS_H
#define COMMON_AC_LIMITS_H

#include <common/config.h>

#if HAVE_LIMITS_H
#include <limits.h>
#else

//
// fake a few of the values
//      (the *_MIN things only work on 2s compliment machines,
//      the *SHRT* things do not work on non-compliant compilers)
//
#ifndef USHRT_MAX
#define USHRT_MAX       ((unsigned short)~(unsigned)0)
#endif
#ifndef SHRT_MAX
#define SHRT_MAX        ((short)(USHRT_MAX >> 1))
#endif
#ifndef SHRT_MIN
#define SHRT_MIN        ((short)(~(unsigned short)SHRT_MAX))
#endif
#ifndef UINT_MAX
#define UINT_MAX        (~(unsigned)0)
#endif
#ifndef INT_MAX
#define INT_MAX         ((int)(UINT_MAX >> 1))
#endif
#ifndef INT_MIN
#define INT_MIN         ((int)(~(unsigned)INT_MAX))
#endif
#ifndef ULONG_MAX
#define ULONG_MAX       (~(unsigned long)0)
#endif
#ifndef LONG_MAX
#define LONG_MAX        ((long)(ULONG_MAX >> 1))
#endif
#ifndef LONG_MIN
#define LONG_MIN        ((long)(~(unsigned long)LONG_MAX))
#endif
#ifndef MB_LEN_MAX
#define MB_LEN_MAX 1
#endif

#endif  // !HAVE_LIMITS_H

#endif // COMMON_AC_LIMITS_H

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