[babeltrace.git] / src / common / align.h

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _BABELTRACE_ALIGN_H
#define _BABELTRACE_ALIGN_H

#include "compat/compiler.h"
#include "compat/limits.h"

#define BT_ALIGN(x, a)		__BT_ALIGN_MASK(x, (__typeof__(x))(a) - 1)
#define __BT_ALIGN_MASK(x, mask)	(((x) + (mask)) & ~(mask))
#define BT_PTR_ALIGN(p, a)		((__typeof__(p)) BT_ALIGN((unsigned long) (p), a))
#define BT_ALIGN_FLOOR(x, a)	__BT_ALIGN_FLOOR_MASK(x, (__typeof__(x)) (a) - 1)
#define __BT_ALIGN_FLOOR_MASK(x, mask)	((x) & ~(mask))
#define BT_PTR_ALIGN_FLOOR(p, a) \
			((__typeof__(p)) BT_ALIGN_FLOOR((unsigned long) (p), a))
#define BT_IS_ALIGNED(x, a)	(((x) & ((__typeof__(x)) (a) - 1)) == 0)

#endif /* _BABELTRACE_ALIGN_H */
Commit	Line	Data
de0ba614	1	/*
0235b0db	2	* SPDX-License-Identifier: MIT
de0ba614	3	*
0235b0db	4	* Copyright 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
de0ba614 MD	5	*/
de0ba614 MD	6
0235b0db MJ	7	#ifndef _BABELTRACE_ALIGN_H
	8	#define _BABELTRACE_ALIGN_H
	9
578e048b MJ	10	#include "compat/compiler.h"
578e048b MJ	11	#include "compat/limits.h"
c4f467da	12
0ec1ae8b	13	#define BT_ALIGN(x, a) __BT_ALIGN_MASK(x, (__typeof__(x))(a) - 1)
328342cd	14	#define __BT_ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
0ec1ae8b SM	15	#define BT_PTR_ALIGN(p, a) ((__typeof__(p)) BT_ALIGN((unsigned long) (p), a))
0ec1ae8b SM	16	#define BT_ALIGN_FLOOR(x, a) __BT_ALIGN_FLOOR_MASK(x, (__typeof__(x)) (a) - 1)
328342cd MJ	17	#define __BT_ALIGN_FLOOR_MASK(x, mask) ((x) & ~(mask))
328342cd MJ	18	#define BT_PTR_ALIGN_FLOOR(p, a) \
0ec1ae8b SM	19	((__typeof__(p)) BT_ALIGN_FLOOR((unsigned long) (p), a))
0ec1ae8b SM	20	#define BT_IS_ALIGNED(x, a) (((x) & ((__typeof__(x)) (a) - 1)) == 0)
6dc2ca62	21
d79865b9	22	#endif /* _BABELTRACE_ALIGN_H */