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deb-mbse/lib/endian.c
2003-08-16 20:45:01 +00:00

64 lines
1.9 KiB
C

/*****************************************************************************
*
* $Id$
* Purpose ...............: Change integer value CPU endian independant
*
*****************************************************************************
* Copyright (C) 1997-2003
*
* Michiel Broek FIDO: 2:280/2802
* Beekmansbos 10
* 1971 BV IJmuiden
* the Netherlands
*
* This file is part of MBSE BBS.
*
* This BBS 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, or (at your option) any
* later version.
*
* MBSE BBS 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 MBSE BBS; see the file COPYING. If not, write to the Free
* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*****************************************************************************/
#include "../config.h"
#include "libs.h"
#include "structs.h"
#include "common.h"
/*
* Return an integer in endian independent format. This is used to make menu
* files portable on little and big-endian systems. Normal datafiles are
* not portable, only the menus.
*/
int le_int(int val)
{
#ifdef BYTE_ORDER
if (BYTE_ORDER == 1234) {
return val;
} else if (BYTE_ORDER == 4321) {
return ((val & 0xff) << 24) | (((val >> 8) & 0xff) << 16) | (((val >> 16) & 0xff) << 8) | ((val >> 24) & 0xff);
} else {
#endif
#ifdef __i386__
return val;
#else
return ((val & 0xff) << 24) | (((val >> 8) & 0xff) << 16) | (((val >> 16) & 0xff) << 8) | ((val >> 24) & 0xff);
#endif
#ifdef BYTE_ORDER
}
#endif
return val;
}