1  #ifndef _BITS_ENDIANNESS_H
       2  #define _BITS_ENDIANNESS_H 1
       3  
       4  #ifndef _BITS_ENDIAN_H
       5  # error "Never use <bits/endianness.h> directly; include <endian.h> instead."
       6  #endif
       7  
       8  /* PowerPC has selectable endianness.  */
       9  #if defined __BIG_ENDIAN__ || defined _BIG_ENDIAN
      10  # define __BYTE_ORDER __BIG_ENDIAN
      11  #endif
      12  #if defined __LITTLE_ENDIAN__ || defined _LITTLE_ENDIAN
      13  # define __BYTE_ORDER __LITTLE_ENDIAN
      14  #endif
      15  
      16  #endif /* bits/endianness.h */