> 0 is actually what I'd expect as an answer. Even on very modern Python you get Given a four byte mantissa, it should be 1 for anything under and equal to 2^3

> 0 is actually what I'd expect as an answer. Even on very modern Python you get Given a four byte mantissa, it should be 1 for anything under and equal to 2^32 and 0 for anything over 2^32. Instead it outputted some random number. A bug in checking the flags or some-such. Or maybe a bug in the float to string routine.