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