#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