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| 1 | #ifndef ENDIANNESS_H |
|---|---|
| 2 | #define ENDIANNESS_H |
| 3 | |
| 4 | /* |
| 5 | * Known limitations: |
| 6 | * Middle endian systems are not handled currently. |
| 7 | */ |
| 8 | |
| 9 | #if defined(__SVR4) && defined(__sun) |
| 10 | #include <sys/byteorder.h> |
| 11 | |
| 12 | #if _BYTE_ORDER == _BIG_ENDIAN |
| 13 | #define _YUGA_LITTLE_ENDIAN 0 |
| 14 | #define _YUGA_BIG_ENDIAN 1 |
| 15 | #elif _BYTE_ORDER == _LITTLE_ENDIAN |
| 16 | #define _YUGA_LITTLE_ENDIAN 1 |
| 17 | #define _YUGA_BIG_ENDIAN 0 |
| 18 | #endif /* _BYTE_ORDER */ |
| 19 | |
| 20 | #endif /* Solaris */ |
| 21 | |
| 22 | /* .. */ |
| 23 | |
| 24 | #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonflyBSD__) || defined(__minix) |
| 25 | #include <sys/endian.h> |
| 26 | |
| 27 | #if _BYTE_ORDER == _BIG_ENDIAN |
| 28 | #define _YUGA_LITTLE_ENDIAN 0 |
| 29 | #define _YUGA_BIG_ENDIAN 1 |
| 30 | #elif _BYTE_ORDER == _LITTLE_ENDIAN |
| 31 | #define _YUGA_LITTLE_ENDIAN 1 |
| 32 | #define _YUGA_BIG_ENDIAN 0 |
| 33 | #endif /* _BYTE_ORDER */ |
| 34 | |
| 35 | #endif /* *BSD */ |
| 36 | |
| 37 | /* .. */ |
| 38 | |
| 39 | #if defined(__OpenBSD__) |
| 40 | #include <machine/endian.h> |
| 41 | |
| 42 | #if _BYTE_ORDER == _BIG_ENDIAN |
| 43 | #define _YUGA_LITTLE_ENDIAN 0 |
| 44 | #define _YUGA_BIG_ENDIAN 1 |
| 45 | #elif _BYTE_ORDER == _LITTLE_ENDIAN |
| 46 | #define _YUGA_LITTLE_ENDIAN 1 |
| 47 | #define _YUGA_BIG_ENDIAN 0 |
| 48 | #endif /* _BYTE_ORDER */ |
| 49 | |
| 50 | #endif /* OpenBSD */ |
| 51 | |
| 52 | /* .. */ |
| 53 | |
| 54 | /* Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the compiler (at least with GCC) */ |
| 55 | #if defined(__APPLE__) && defined(__MACH__) || defined(__ellcc__ ) |
| 56 | |
| 57 | #ifdef __BIG_ENDIAN__ |
| 58 | #if __BIG_ENDIAN__ |
| 59 | #define _YUGA_LITTLE_ENDIAN 0 |
| 60 | #define _YUGA_BIG_ENDIAN 1 |
| 61 | #endif |
| 62 | #endif /* __BIG_ENDIAN__ */ |
| 63 | |
| 64 | #ifdef __LITTLE_ENDIAN__ |
| 65 | #if __LITTLE_ENDIAN__ |
| 66 | #define _YUGA_LITTLE_ENDIAN 1 |
| 67 | #define _YUGA_BIG_ENDIAN 0 |
| 68 | #endif |
| 69 | #endif /* __LITTLE_ENDIAN__ */ |
| 70 | |
| 71 | #endif /* Mac OSX */ |
| 72 | |
| 73 | /* .. */ |
| 74 | |
| 75 | #if defined(__linux__) |
| 76 | #include <endian.h> |
| 77 | |
| 78 | #if __BYTE_ORDER == __BIG_ENDIAN |
| 79 | #define _YUGA_LITTLE_ENDIAN 0 |
| 80 | #define _YUGA_BIG_ENDIAN 1 |
| 81 | #elif __BYTE_ORDER == __LITTLE_ENDIAN |
| 82 | #define _YUGA_LITTLE_ENDIAN 1 |
| 83 | #define _YUGA_BIG_ENDIAN 0 |
| 84 | #endif /* __BYTE_ORDER */ |
| 85 | |
| 86 | #endif /* GNU/Linux */ |
| 87 | |
| 88 | /* . */ |
| 89 | |
| 90 | #if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN) |
| 91 | #error Unable to determine endian |
| 92 | #endif /* Check we found an endianness correctly. */ |
| 93 | |
| 94 | #endif /* ENDIANNESS_H */ |
| 95 |
Warning: This file is not a C or C++ file. It does not have highlighting.