diff options
Diffstat (limited to 'include/linux/const.h')
| -rw-r--r-- | include/linux/const.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/const.h b/include/linux/const.h new file mode 100644 index 000000000..435ddd72d --- /dev/null +++ b/include/linux/const.h @@ -0,0 +1,14 @@ +#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 */ |