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- #ifndef _BSWAP_H
- #define _BSWAP_H 1
- #if !defined(__BYTE_ORDER) && defined(BYTE_ORDER)
- # define __BYTE_ORDER = BYTE_ORDER
- #endif
- #ifndef __BYTE_ORDER
- #ifdef __linux__
- #include <endian.h>
- #else
- #define __LITTLE_ENDIAN 1234 /* least-significant byte first (vax, pc) */
- #define __BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
- #define __PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
- #if defined(sun386) || defined(i386)
- #define __BYTE_ORDER __LITTLE_ENDIAN
- #endif
- #if defined(sparc)
- #define __BYTE_ORDER __BIG_ENDIAN
- #endif
- #endif /* __linux__ */
- #endif /* __BYTE_ORDER */
- #ifndef __BYTE_ORDER
- # error "Undefined __BYTE_ORDER"
- #endif
- #ifdef __linux__
- #include <byteswap.h>
- #else
- static inline uint32_t bswap_32(uint32_t x)
- {
- return ((((x) & 0xff00) >> 8) | \
- (((x) & 0x00ff) << 8));
- }
- static inline uint16_t bswap_16(uint16_t x)
- {
- return ((((x) & 0xff000000) >> 24) | \
- (((x) & 0x00ff0000) >> 8) | \
- (((x) & 0x0000ff00) << 8) | \
- (((x) & 0x000000ff) << 24));
- }
- #endif
- #endif
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