#ifndef _MISC_H_#define _MISC_H_/* Copy one word once and then copy one byte once. */#define MEMCPY_PLUS_PLUS(dest, src, n) \({													\	void *__end = (char *)(dest) + (n);				\	while ((long *)(dest) + 1 <= (long *)__end)		\		*((long *)(dest))++ = *((long *)(src))++;	\	while ((char *)(dest) + 1 <= (char *)__end)		\		*((char *)(dest))++ = *((char *)(src))++;	\	dest;											\})#define MEMCPY_PLUS(dest, src, n) \({													\	const void *__src = (src);						\	MEMCPY_PLUS_PLUS(dest, __src, n);				\})#define FREE_NOT_NULL(ptr) \do {												\	if (ptr) free(ptr);								\} while (0)#define MIN(x, y)		((x) < (y) ? (x) : (y))#define MAX(x, y)		((x) > (y) ? (x) : (y))#ifdef __cplusplusextern "C"{#endifchar *strdupn(const char *string, unsigned int len);#ifdef __cplusplus}#endif#endif