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#if defined(ALF_LSB_FIRST) && defined(ALF_MSB_FIRST)
# error Cannot define both ALF_LSB_FIRST and ALF_MSB_FIRST
#endif
/* user defined one or the other in COPT, use it. */
#if defined(ALF_LSB_FIRST) || defined(ALF_MSB_FIRST)
# define ALF_ENDIAN_OK
#endif
/* try to get the byte order on this platform.
if we succeed, either ALF_LSB_FIRST or ALF_MSB_FIRST will
be defined, and so will ALF_ENDIAN_OK. */
#ifndef ALF_ENDIAN_OK
# if defined(__BYTE_ORDER__)
# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
# define ALF_LSB_FIRST
# define ALF_ENDIAN_OK
# else
# if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
# define ALF_MSB_FIRST
# define ALF_ENDIAN_OK
# endif
# endif
# endif
#endif
/* if the __BYTE_ORDER__ macro wasn't defined... */
#ifndef ALF_ENDIAN_OK
# if defined(__LITTLE_ENDIAN__ || defined __LITTLE_ENDIAN || defined LITTLE_ENDIAN)
# define ALF_LSB_FIRST
# define ALF_ENDIAN_OK
# else
# if defined(__BIG_ENDIAN__ || defined __BIG_ENDIAN || defined BIG_ENDIAN)
# define ALF_MSB_FIRST
# define ALF_ENDIAN_OK
# endif
# endif
#endif
#ifdef ALF_ENDIAN_OK
# ifdef ALF_LSB_FIRST
# define HIBYTE 2
# define MIDBYTE 1
# define LOBYTE 0
# else
# define HIBYTE 1
# define MIDBYTE 2
# define LOBYTE 3
# endif
#else
# warning Cannot determine endianness, falling back to safe but slow append_bit().
# warning Recompile with -DALF_LSB_FIRST or -DALF_MSB_FIRST.
#endif
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