1 #ifndef _LINUX_CONST_H
2 #define _LINUX_CONST_H
3 
4 #include <vdso/const.h>
5 
6 /*
7  * This returns a constant expression while determining if an argument is
8  * a constant expression, most importantly without evaluating the argument.
9  * Glory to Martin Uecker <Martin.Uecker@med.uni-goettingen.de>
10  */
11 #define __is_constexpr(x) \
12 	(sizeof(int) == sizeof(*(8 ? ((void *)((long)(x) * 0l)) : (int *)8)))
13 
14 #endif /* _LINUX_CONST_H */
15