diff options
Diffstat (limited to 'lib/zebra.h')
| -rw-r--r-- | lib/zebra.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/zebra.h b/lib/zebra.h index 88f16252..1739d771 100644 --- a/lib/zebra.h +++ b/lib/zebra.h @@ -336,6 +336,23 @@ struct in_pktinfo #define HAVE_IP_HDRINCL_BSD_ORDER #endif +/* Define BYTE_ORDER, if not defined. Useful for compiler conditional + * code, rather than preprocessor conditional. + * Not all the world has this BSD define. + */ +#ifndef BYTE_ORDER +#define BIG_ENDIAN 4321 /* least-significant byte first (vax, pc) */ +#define LITTLE_ENDIAN 1234 /* most-significant byte first (IBM, net) */ +#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */ + +#if defined(WORDS_BIGENDIAN) +#define BYTE_ORDER BIG_ENDIAN +#else /* !WORDS_BIGENDIAN */ +#define BYTE_ORDER LITTLE_ENDIAN +#endif /* WORDS_BIGENDIAN */ + +#endif /* ndef BYTE_ORDER */ + /* MAX / MIN are not commonly defined, but useful */ #ifndef MAX #define MAX(a, b) ((a) > (b) ? (a) : (b)) |