in JavaScript, why signed zero +0 -0

By Xah Lee. Date: .

why signed 0

in JavaScript etc, why do we have signed 0.

js signed zero 2026-06-30 1db87 ll
js signed zero 2026-06-30 1db87 ll

signed zero

js signed zero 2026-06-30 3959c ll
js signed zero 2026-06-30 3959c ll

IEEE 754. IEEE Standard for Floating-Point Arithmetic

IEEE 754 2026-06-30 2c2b7 ll
IEEE 754 2026-06-30 2c2b7 ll

JavaScript problems