typedef.h

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/******************************************************************************
  Copyright(C) 2005,2006 Frank ZHANG

  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 02111-1307 USA.
 
/******************************************************************************
*      Authors                   :  Frank ZHANG ([e-mail])
*      Description               :  General type defines.
*
*
*      Date of creation          :  04/03/2005
*
*
*      History                   :
*      2005/04/03 Frank ZHANG    : - Creation
******************************************************************************/

#ifndef __TYPE_DEF_H__
#define __TYPE_DEF_H__

#include <limits.h>

/* Constants */

#ifndef FALSE
#define FALSE      0
#endif

#ifndef TRUE
#define TRUE      (!FALSE)
#endif

#ifndef OK
#define OK        0
#endif

#ifndef FAIL
#define FAIL      (-1)
#endif

#ifndef NULL
#define NULL      ((void *)0)
#endif


/* 
 * Type defination
 *
 * - integers
 *
 *                 8-bit   16-bit  32-bit
 *      unsigned   BYTE    WORD    DWORD
 *      signed     CHAR    SHORT   LONG
 *
 */
 
/* 8-bit integers */
#if (UCHAR_MAX == 0xFFU)
   typedef unsigned char BYTE;
   typedef char CHAR;
#else
# error "Unsupported OCTET/CHAR size!"
#endif

/* 16-bit integers */
#if (UINT_MAX == 0xFFFFU)
   typedef unsigned int WORD;
   typedef int SHORT;
#elif (USHRT_MAX == 0xFFFFU)
   typedef unsigned short WORD;
   typedef short SHORT;
#else
# error "Unsupported WORD/SHORT size!"
#endif

/* 32-bit integers */
#if (ULONG_MAX == 0xFFFFFFFFUL)
   typedef unsigned long DWORD;
   typedef long LONG;
#elif (UINT_MAX == 0xFFFFFFFFUL)
   typedef unsigned int DWORD;
   typedef int LONG;
#else
# error "Unsupported DWORD/LONG size!"
#endif


#ifndef BOOL_DEFINED
typedef BYTE BOOL;
#endif

#endif