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limits.h

/*
 *    fhist - file history and comparison tools
 *    Copyright (C) 1994, 1998 Peter Miller;
 *    All rights reserved.
 *
 *    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 2 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, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 * MANIFEST: insulate against <limits.h> presence or absence
 */

#ifndef COMMON_AC_LIMITS_H
#define COMMON_AC_LIMITS_H

#include <config.h>

#ifdef 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 CHAR_BIT
#define CHAR_BIT 8
#endif
#ifndef MB_LEN_MAX
#define MB_LEN_MAX 1
#endif

#ifndef UCHAR_MAX
#define UCHAR_MAX 255
#endif

#endif      /* !HAVE_LIMITS_H */

#endif /* COMMON_AC_LIMITS_H */

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