net_wh.h

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#pragma once
 
#if defined(i386) || defined(_AMD64_) || defined(_ARM_)
 
/* DWORD network to host byte order conversion for i386 */
#define DN2H(dw) \
    ((((dw) & 0xFF000000L) >> 24) | \
     (((dw) & 0x00FF0000L) >> 8) | \
     (((dw) & 0x0000FF00L) << 8) | \
     (((dw) & 0x000000FFL) << 24))
 
/* DWORD host to network byte order conversion for i386 */
#define DH2N(dw) \
    ((((dw) & 0xFF000000L) >> 24) | \
     (((dw) & 0x00FF0000L) >> 8) | \
     (((dw) & 0x0000FF00L) << 8) | \
     (((dw) & 0x000000FFL) << 24))
 
/* WORD network to host order conversion for i386 */
#define WN2H(w) \
    ((((w) & 0xFF00) >> 8) | \
     (((w) & 0x00FF) << 8))
 
/* WORD host to network byte order conversion for i386 */
#define WH2N(w) \
    ((((w) & 0xFF00) >> 8) | \
     (((w) & 0x00FF) << 8))
 
#else /* defined(i386) || defined(_AMD64_) || defined(_ARM_) */
 
/* DWORD network to host byte order conversion for other architectures */
#define DN2H(dw) \
    (dw)
 
/* DWORD host to network byte order conversion for other architectures */
#define DH2N(dw) \
    (dw)
 
/* WORD network to host order conversion for other architectures */
#define WN2H(w) \
    (w)
 
/* WORD host to network byte order conversion for other architectures */
#define WH2N(w) \
    (w)
 
#endif /* defined(i386) || defined(_AMD64_) || defined(_ARM_) */