mirror of https://github.com/AxioDL/nod.git
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
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#ifndef __NOD_UTIL_HPP__
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#define __NOD_UTIL_HPP__
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namespace NOD
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{
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/* Type-sensitive byte swappers */
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template <typename T>
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static inline T bswap16(T val)
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{
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#if __GNUC__
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return __builtin_bswap16(val);
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#elif _WIN32
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return _byteswap_ushort(val);
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#else
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return (val = (val << 8) | ((val >> 8) & 0xFF));
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#endif
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}
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template <typename T>
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static inline T bswap32(T val)
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{
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#if __GNUC__
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return __builtin_bswap32(val);
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#elif _WIN32
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return _byteswap_ulong(val);
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#else
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val = (val & 0x0000FFFF) << 16 | (val & 0xFFFF0000) >> 16;
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val = (val & 0x00FF00FF) << 8 | (val & 0xFF00FF00) >> 8;
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return val;
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#endif
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}
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template <typename T>
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static inline T bswap64(T val)
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{
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#if __GNUC__
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return __builtin_bswap64(val);
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#elif _WIN32
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return _byteswap_uint64(val);
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#else
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return ((val & 0xFF00000000000000ULL) >> 56) |
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((val & 0x00FF000000000000ULL) >> 40) |
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((val & 0x0000FF0000000000ULL) >> 24) |
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((val & 0x000000FF00000000ULL) >> 8) |
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((val & 0x00000000FF000000ULL) << 8) |
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((val & 0x0000000000FF0000ULL) << 24) |
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((val & 0x000000000000FF00ULL) << 40) |
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((val & 0x00000000000000FFULL) << 56);
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#endif
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}
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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static inline int16_t SBig(int16_t val) {return bswap16(val);}
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static inline uint16_t SBig(uint16_t val) {return bswap16(val);}
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static inline int32_t SBig(int32_t val) {return bswap32(val);}
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static inline uint32_t SBig(uint32_t val) {return bswap32(val);}
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static inline int64_t SBig(int64_t val) {return bswap64(val);}
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static inline uint64_t SBig(uint64_t val) {return bswap64(val);}
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static inline int16_t SLittle(int16_t val) {return val;}
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static inline uint16_t SLittle(uint16_t val) {return val;}
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static inline int32_t SLittle(int32_t val) {return val;}
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static inline uint32_t SLittle(uint32_t val) {return val;}
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static inline int64_t SLittle(int64_t val) {return val;}
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static inline uint64_t SLittle(uint64_t val) {return val;}
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#else
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static inline int16_t SLittle(int16_t val) {return bswap16(val);}
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static inline uint16_t SLittle(uint16_t val) {return bswap16(val);}
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static inline int32_t SLittle(int32_t val) {return bswap32(val);}
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static inline uint32_t SLittle(uint32_t val) {return bswap32(val);}
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static inline int64_t SLittle(int64_t val) {return bswap64(val);}
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static inline uint64_t SLittle(uint64_t val) {return bswap64(val);}
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static inline int16_t SBig(int16_t val) {return val;}
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static inline uint16_t SBig(uint16_t val) {return val;}
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static inline int32_t SBig(int32_t val) {return val;}
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static inline uint32_t SBig(uint32_t val) {return val;}
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static inline int64_t SBig(int64_t val) {return val;}
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static inline uint64_t SBig(uint64_t val) {return val;}
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#endif
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}
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#endif // __NOD_UTIL_HPP__
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