#include <stdio.h>

#define __typecheck(x, y)				\
	(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))

#define __is_constexpr(x)						\
	(sizeof(int) == sizeof(*(8 ? ((void *)((long)(x) * 0l)) : (int *)8)))

#define __no_side_effects(x, y)				\
	(__is_constexpr(x) && __is_constexpr(y))

#define __safe_cmp(x, y)						\
	(__typecheck(x, y) && __no_side_effects(x, y))

#define __cmp(x, y, op)        ((x) op (y) ? (x) : (y))

#define __cmp_once(x, y, op) ({			\
			typeof(x) __x = (x);    \
			typeof(y) __y = (y);    \
			__cmp(__x, __y, op); })

#define __careful_cmp(x, y, op)						\
	__builtin_choose_expr(__safe_cmp(x, y),				\
			      __cmp(x, y, op), __cmp_once(x, y, op))

#define min(x, y)      __careful_cmp(x, y, <)
#define max(x, y)      __careful_cmp(x, y, >)

#define min_t(type, x, y)      __careful_cmp((type)(x), (type)(y), <)
#define max_t(type, x, y)      __careful_cmp((type)(x), (type)(y), >)


#define min_not_zero(x, y) ({						\
			typeof(x) __x = (x);				\
			typeof(y) __y = (y);				\
			__x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); })

int main()
{
	printf("test %u\n", min_not_zero(100, 1000));
	return 0;
}