align.h File Reference

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Macros
#define	ALIGN_DOWN(x, a)   ((x) & ~((typeof(x))(a) - 1))
#define	ALIGN_MASK(x, mask)
#define	ALIGN_UP(x, a)   ALIGN_MASK(x, (typeof(x))(a) - 1)
#define	IS_ALIGNED(x, a)   (((x) & ((typeof(x))(a) - 1)) == 0)
#define	IS_PWR_OF_2(x)

Macro Definition Documentation

ALIGN_DOWN

#define ALIGN_DOWN	(		x,
			a
	)		((x) & ~((typeof(x))(a) - 1))

Definition at line 21 of file align.h.

ALIGN_MASK

#define ALIGN_MASK	(		x,
			mask
	)

Value:

({                                      \
    typeof(mask) _mask = (mask);        \
    ((x) + _mask) & ~_mask;             \
})

Definition at line 13 of file align.h.

ALIGN_UP

#define ALIGN_UP	(		x,
			a
	)		ALIGN_MASK(x, (typeof(x))(a) - 1)

Definition at line 20 of file align.h.

IS_ALIGNED

#define IS_ALIGNED	(		x,
			a
	)		(((x) & ((typeof(x))(a) - 1)) == 0)

Definition at line 22 of file align.h.

IS_PWR_OF_2

#define IS_PWR_OF_2

(

x

)

Value:

({                                      \
    typeof(x) _x = (x);                 \
    _x == 0 || (_x & (_x - 1)) == 0;    \
})

Definition at line 24 of file align.h.