1 #ifndef _BYTESWAP_H 2 #define _BYTESWAP_H 3 4 #include <features.h> 5 #include <stdint.h> 6 __bswap_16(uint16_t __x)7static __inline uint16_t __bswap_16(uint16_t __x) 8 { 9 return __x<<8 | __x>>8; 10 } 11 __bswap_32(uint32_t __x)12static __inline uint32_t __bswap_32(uint32_t __x) 13 { 14 return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24; 15 } 16 __bswap_64(uint64_t __x)17static __inline uint64_t __bswap_64(uint64_t __x) 18 { 19 return __bswap_32(__x)+0ULL<<32 | __bswap_32(__x>>32); 20 } 21 22 #define bswap_16(x) __bswap_16(x) 23 #define bswap_32(x) __bswap_32(x) 24 #define bswap_64(x) __bswap_64(x) 25 26 #endif 27