钟鼓楼

/*	$OpenBSD: types.h,v 1.12 1997/11/30 18:50:18 millert Exp $	*/
/*	$NetBSD: types.h,v 1.29 1996/11/15 22:48:25 jtc Exp $	*/

#ifndef _INC_TYPES_H_
#define _INC_TYPES_H_

#ifndef NULL
#define NULL ((void *) 0)
#endif /* !NULL */


typedef unsigned char            u_int8_t;
typedef short                     int16_t;
typedef unsigned short          u_int16_t;
typedef int                       int32_t;
typedef unsigned int            u_int32_t;
typedef long long                 int64_t;
typedef unsigned long long      u_int64_t;

typedef int32_t                 register_t;

typedef	unsigned char	u_char;
typedef	unsigned short	u_short;
typedef	unsigned int	u_int;
typedef	unsigned long	u_long;

typedef	u_int64_t	u_quad_t;	/* quads */
typedef	int64_t		quad_t;
typedef	quad_t *	qaddr_t;



#define MIN(_a, _b)	\
	({		\
		typeof(_a) __a = (_a);	\
		typeof(_b) __b = (_b);	\
		__a <= __b ? __a : __b;	\
	})

/* Static assert, for compile-time assertion checking */
#define static_assert(c) switch (c) case 0: case(c):

#define offsetof(type, member)  ((size_t)(&((type *)0)->member))

/* Rounding; only works for n = power of two */
#define ROUND(a, n)	(((((u_long)(a))+(n)-1)) & ~((n)-1))
#define ROUNDDOWN(a, n)	(((u_long)(a)) & ~((n)-1))


#endif /* !_INC_TYPES_H_ */