1 #ifndef _BYTESWAP_H
2 #define _BYTESWAP_H
3 
4 #include <features.h>
5 #include <stdint.h>
6 
__bswap_16(uint16_t __x)7 static __inline uint16_t __bswap_16(uint16_t __x)
8 {
9 	return __x<<8 | __x>>8;
10 }
11 
__bswap_32(uint32_t __x)12 static __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)17 static __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