utils.h File Reference

#include <stddef.h>

Include dependency graph for utils.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	ARRAYLEN(x)   (sizeof(x) / sizeof((x)[0]))
#define	ARRAYEND(x)   (&(x)[ARRAYLEN(x)])
#define	CONCAT_HELPER(x, y)   x ## y
#define	CONCAT(x, y)   CONCAT_HELPER(x, y)
#define	STR_HELPER(x)   #x
#define	STR(x)   STR_HELPER(x)
#define	BITCOUNT(x)   (((BX_(x)+(BX_(x)>>4)) & 0x0F0F0F0F) % 255)
#define	BX_(x)   ((x) - (((x)>>1)&0x77777777) - (((x)>>2)&0x33333333) - (((x)>>3)&0x11111111))
#define	UNUSED(x)   (void)(x)
#define	container_of(ptr, type, member)

Macro Definition Documentation

#define ARRAYEND

(

x

)

(&(x)[ARRAYLEN(x)])

#define ARRAYLEN

(

x

)

(sizeof(x) / sizeof((x)[0]))

#define BITCOUNT

(

x

)

(((BX_(x)+(BX_(x)>>4)) & 0x0F0F0F0F) % 255)

#define BX_

(

x

)

((x) - (((x)>>1)&0x77777777) - (((x)>>2)&0x33333333) - (((x)>>3)&0x11111111))

#define CONCAT	(		x,
			y
	)		CONCAT_HELPER(x, y)

#define CONCAT_HELPER	(		x,
			y
	)		x ## y

#define container_of	(		ptr,
			type,
			member
	)

Value:

(\
        (type *)( (char *)((const typeof( ((type *)0)->member )*)ptr) - offsetof(type,member) ))

#define STR

(

x

)

STR_HELPER(x)

#define STR_HELPER

(

x

)

#x

#define UNUSED

(

x

)

(void)(x)