| /* zendian.h -- define BYTE_ORDER for endian tests |
| * For conditions of distribution and use, see copyright notice in zlib.h |
| */ |
| |
| #ifndef ENDIAN_H_ |
| #define ENDIAN_H_ |
| |
| /* First check whether the compiler knows the target __BYTE_ORDER__. */ |
| #if defined(__BYTE_ORDER__) |
| # if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
| # if !defined(LITTLE_ENDIAN) |
| # define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__ |
| # endif |
| # if !defined(BYTE_ORDER) |
| # define BYTE_ORDER LITTLE_ENDIAN |
| # endif |
| # elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
| # if !defined(BIG_ENDIAN) |
| # define BIG_ENDIAN __ORDER_BIG_ENDIAN__ |
| # endif |
| # if !defined(BYTE_ORDER) |
| # define BYTE_ORDER BIG_ENDIAN |
| # endif |
| # endif |
| #elif defined(__MINGW32__) |
| # include <sys/param.h> |
| #elif defined(_WIN32) |
| # define LITTLE_ENDIAN 1234 |
| # define BIG_ENDIAN 4321 |
| # if defined(ARCH_X86) || defined(ARCH_IA64) || defined(ARCH_ARM) |
| # define BYTE_ORDER LITTLE_ENDIAN |
| # else |
| # error Unknown endianness! |
| # endif |
| #elif defined(__linux__) |
| # include <endian.h> |
| #elif defined(__APPLE__) |
| # include <machine/endian.h> |
| #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__) || defined(__DragonFly__) |
| # include <sys/endian.h> |
| #elif defined(__sun) || defined(sun) |
| # include <sys/byteorder.h> |
| # if !defined(LITTLE_ENDIAN) |
| # define LITTLE_ENDIAN 4321 |
| # endif |
| # if !defined(BIG_ENDIAN) |
| # define BIG_ENDIAN 1234 |
| # endif |
| # if !defined(BYTE_ORDER) |
| # if defined(_BIG_ENDIAN) |
| # define BYTE_ORDER BIG_ENDIAN |
| # else |
| # define BYTE_ORDER LITTLE_ENDIAN |
| # endif |
| # endif |
| #else |
| # include <endian.h> |
| #endif |
| |
| #if BYTE_ORDER == LITTLE_ENDIAN |
| # define Z_U16_TO_LE(x) (x) |
| # define Z_U32_TO_LE(x) (x) |
| # define Z_U64_TO_LE(x) (x) |
| # define Z_U16_FROM_LE(x) (x) |
| # define Z_U32_FROM_LE(x) (x) |
| # define Z_U64_FROM_LE(x) (x) |
| # define Z_U16_TO_BE(x) ZSWAP16(x) |
| # define Z_U32_TO_BE(x) ZSWAP32(x) |
| # define Z_U64_TO_BE(x) ZSWAP64(x) |
| # define Z_U16_FROM_BE(x) ZSWAP16(x) |
| # define Z_U32_FROM_BE(x) ZSWAP32(x) |
| # define Z_U64_FROM_BE(x) ZSWAP64(x) |
| #elif BYTE_ORDER == BIG_ENDIAN |
| # define Z_U16_TO_LE(x) ZSWAP16(x) |
| # define Z_U32_TO_LE(x) ZSWAP32(x) |
| # define Z_U64_TO_LE(x) ZSWAP64(x) |
| # define Z_U16_FROM_LE(x) ZSWAP16(x) |
| # define Z_U32_FROM_LE(x) ZSWAP32(x) |
| # define Z_U64_FROM_LE(x) ZSWAP64(x) |
| # define Z_U16_TO_BE(x) (x) |
| # define Z_U32_TO_BE(x) (x) |
| # define Z_U64_TO_BE(x) (x) |
| # define Z_U16_FROM_BE(x) (x) |
| # define Z_U32_FROM_BE(x) (x) |
| # define Z_U64_FROM_BE(x) (x) |
| #else |
| # error "Unknown byte order" |
| #endif |
| |
| #endif |
