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https://github.com/torvalds/linux
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Tip revision: 614124bea77e452aa6df7a8714e8bc820b489922 authored by Linus Torvalds on 06 June 2021, 22:47:27 UTC
Linux 5.13-rc5
Tip revision: 614124b
const.h
#ifndef _LINUX_CONST_H
#define _LINUX_CONST_H

#include <vdso/const.h>

/*
 * This returns a constant expression while determining if an argument is
 * a constant expression, most importantly without evaluating the argument.
 * Glory to Martin Uecker <Martin.Uecker@med.uni-goettingen.de>
 */
#define __is_constexpr(x) \
	(sizeof(int) == sizeof(*(8 ? ((void *)((long)(x) * 0l)) : (int *)8)))

#endif /* _LINUX_CONST_H */
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