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| -rw-r--r-- | src/endianness.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/endianness.h b/src/endianness.h new file mode 100644 index 0000000..ee9a1a5 --- /dev/null +++ b/src/endianness.h @@ -0,0 +1,105 @@ +#ifndef ENDIANNESS_H +#define ENDIANNESS_H + +#ifndef __LITTLE_ENDIAN +#define __LITTLE_ENDIAN 1234 +#endif + +#ifndef __BIG_ENDIAN +#define __BIG_ENDIAN 4321 +#endif + +#ifndef __BYTE_ORDER +#ifdef __LITTLE_ENDIAN__ +#define __BYTE_ORDER __LITTLE_ENDIAN +#else +#ifdef __BIG_ENDIAN__ +#define __BYTE_ORDER __BIG_ENDIAN +#endif +#endif +#endif + +#ifndef be16toh +#if __BYTE_ORDER == __BIG_ENDIAN +#define be16toh(x) (x) +#else +#define be16toh(x) ((((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8)) +#endif +#endif + +#ifndef le16toh +#if __BYTE_ORDER == __BIG_ENDIAN +#define le16toh(x) ((((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8)) +#else +#define le16toh(x) (x) +#endif +#endif + + +#ifndef __bswap_32 +#define __bswap_32(x) ((((x) & 0xFF000000) >> 24) \ + | (((x) & 0x00FF0000) >> 8) \ + | (((x) & 0x0000FF00) << 8) \ + | (((x) & 0x000000FF) << 24)) +#endif + +#ifndef be32toh +#if __BYTE_ORDER == __BIG_ENDIAN +#define be32toh(x) (x) +#else +#define be32toh(x) __bswap_32(x) +#endif +#endif + +#ifndef htobe32 +#define htobe32 be32toh +#endif + +#ifndef le32toh +#if __BYTE_ORDER == __BIG_ENDIAN +#define le32toh(x) __bswap_32(x) +#else +#define le32toh(x) (x) +#endif +#endif + +#ifndef htole32 +#define htole32 le32toh +#endif + +#ifndef __bswap_64 +#define __bswap_64(x) ((((x) & 0xFF00000000000000ull) >> 56) \ + | (((x) & 0x00FF000000000000ull) >> 40) \ + | (((x) & 0x0000FF0000000000ull) >> 24) \ + | (((x) & 0x000000FF00000000ull) >> 8) \ + | (((x) & 0x00000000FF000000ull) << 8) \ + | (((x) & 0x0000000000FF0000ull) << 24) \ + | (((x) & 0x000000000000FF00ull) << 40) \ + | (((x) & 0x00000000000000FFull) << 56)) +#endif + +#ifndef htobe64 +#if __BYTE_ORDER == __BIG_ENDIAN +#define htobe64(x) (x) +#else +#define htobe64(x) __bswap_64(x) +#endif +#endif + +#ifndef be64toh +#define be64toh htobe64 +#endif + +#ifndef le64toh +#if __BYTE_ORDER == __LITTLE_ENDIAN +#define le64toh(x) (x) +#else +#define le64toh(x) __bswap_64(x) +#endif +#endif + +#ifndef htole64 +#define htole64 le64toh +#endif + +#endif /* ENDIANNESS_H */ |