@b0rk "Mantissa" is very common, but the IEEE 754 standards (as well as Knuth and Kahan in their influential writings) have always used "significand," because "mantissa" isn't quite correct vis-a-vis it's traditional mathematical meaning when talking bout logarithms.
I'm trying to understand IEEE 754 floating point. when I try convert 0.3 from decimal to binary with online calculator, it said the significand value was 1.2
Where 1.2 come from?
I did understand a...