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#ifndef _CDEFS_H_
#define _CDEFS_H_
#include <stddef.h>
/*
* Taken from FreeBSD 9.
*/
#if defined(__cplusplus)
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS }
#else
#define __BEGIN_DECLS
#define __END_DECLS
#endif
/*
* Macro to test if we're using a specific version of gcc or later.
*/
#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
#define __GNUC_PREREQ__(ma, mi) \
(__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi))
#else
#define __GNUC_PREREQ__(ma, mi) 0
#endif
/*
* We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h>
* require it.
*/
#if __GNUC_PREREQ__(4, 1)
#define __offsetof(type, field) __builtin_offsetof(type, field)
#else
#ifndef __cplusplus
#define __offsetof(type, field) ((size_t)(&((type *)0)->field))
#else
#define __offsetof(type, field) \
(__offsetof__ (reinterpret_cast <size_t> \
(&reinterpret_cast <const volatile char &> \
(static_cast<type *> (0)->field))))
#endif
#endif
#define __rangeof(type, start, end) \
(__offsetof(type, end) - __offsetof(type, start))
/* Macros for counting and rounding. */
#ifndef howmany
#define howmany(x, y) (((x)+((y)-1))/(y))
#endif
#define rounddown(x, y) (((x)/(y))*(y))
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) /* to any y */
#define roundup2(x, y) (((x)+((y)-1))&(~((y)-1))) /* if y is powers of two */
#define powerof2(x) ((((x)-1)&(x))==0)
#define S_ISSOCK(_m) (0)
#endif
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