net_wh.h

来自「一个类似windows」· C头文件 代码 · 共 51 行

#ifndef _NET_WH_H
#define _NET_WH_H

#ifdef i386

/* 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 /* i386 */

/* 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 /* i386 */

#endif/*_NET_WH_H*/