On: 9999999999999999.0 – 9999999999999998.0

[copperx]

How detailed, if I may ask?

[jimmaswell → copperx]

I remember we learned how the representation worked bit-for-bit, and how it being stored in binary meant it couldn't perfectly represent everything in decimal. 1.01b meaning 12^0 + 02^-1 + 1*2^-2 for example.