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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_STDDEF_H
#define _LINUX_STDDEF_H

#include <uapi/linux/stddef.h>

#undef NULL
#define NULL ((void *)0)

enum {
	false	= 0,
	true	= 1
};

#undef offsetof
#ifdef __compiler_offsetof
#define offsetof(TYPE, MEMBER)	__compiler_offsetof(TYPE, MEMBER)
#else
#define offsetof(TYPE, MEMBER)	((size_t)&((TYPE *)0)->MEMBER)
#endif

/**
 * sizeof_field(TYPE, MEMBER)
 *
 * @TYPE: The structure containing the field of interest
 * @MEMBER: The field to return the size of
 */
#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))

/**
 * offsetofend(TYPE, MEMBER)
 *
 * @TYPE: The type of the structure
 * @MEMBER: The member within the structure to get the end offset of
 */
#define offsetofend(TYPE, MEMBER) \
	(offsetof(TYPE, MEMBER)	+ sizeof_field(TYPE, MEMBER))

#endif