Junio C Hamano <gitster <at> pobox.com> writes:
> "Ugly" is not quite the word I am looking for. "My gut feels that there
> has to be a way to write this more cleanly, but I am frustrated that I
> cannot come up with one" might be the word...
How about this:
#include <stdio.h>
#define MAGIC(type) ((~(type)0 / (type)0xff) << 7)
#define TEST(type) printf(#type " %llx\n", (unsigned long long)MAGIC(type))
int
main(void)
{
/*TEST(unsigned char); Doesn't work, and I'm too lazy to find out why. */
TEST(unsigned int);
TEST(unsigned long);
TEST(unsigned long long);
return 0;
}
HTH,
Jens.
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