Arithmetic & Number Theory
Sign Function
Returns −1, 0, or 1 by sign.
Formula
Formula
y = sgn(x)
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| x | input | real number (ℝ) | — | input |
| y | −1, 0, or 1 | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenx = -3.5
Result-1
Example 2
Givenx = 8
Result1