source: orxonox.OLD/branches/terrain.old/src/lib/util/byte_order.h

#ifndef _BYTE_ORDER_H
#define _BYTE_ORDER_H

enum ByteOrder { LittleEndian = 1, BigEndian = 2 };

#ifdef HAVE_SDL_SDL_H
#include <SDL/SDL_byteorder.h>
#else
#include <SDL_byteorder.h>
#endif


#if SDL_BYTEORDER == SDL_LIL_ENDIAN
#define NATIVE_BYTEORDER LittleEndian
#else
#define NATIVE_BYTEORDER BigEndian
#endif


inline void swap16( short *_s )
{
        char *ci = (char*)_s, tmp;
        tmp = ci[0]; ci[0] = ci[1]; ci[1] = tmp;
}

inline void swap32( int *_i )
{
        char *ci = (char*)_i, tmp;
        tmp = ci[0]; ci[0] = ci[3]; ci[3] = tmp;
        tmp = ci[2]; ci[2] = ci[1]; ci[1] = tmp;
}

#endif