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Level 19
· ◆◆ · ~11 min
What a Double Actually Is
What a Double Actually Is
"Sixty-four bits, about sixteen decimal digits, and a gap between neighbours that grows with the number."
sign, exponent, mantissamachine epsilon and ulpexact integers up to 2^53why 0.1 is not 0.1
A short lesson, then a quiz. ❤️×3 — a wrong answer costs a heart; finish with at least one left and the level is yours. Lose all three and you'll have to try again. Replay any time — XP and cleared levels are never lost.