You are upset about comment formatting, but find this easier to appreciate? ... #define __is_constant(x) \ (sizeof(int) == sizeof(*(1 ? ((void*)((lon

You are upset about comment formatting, but find this easier to appreciate? ... #define __is_constant(x) \ (sizeof(int) == sizeof(*(1 ? ((void*)((long)(x) * 0l)) : (int*)1))) ... How many C programmers would even understand what that code does, without an explanation?