Java Math.signum() method

The java.lang.Math.signum () is used to find the sign of a given value.

Syntax

Parameter

Return

• If the argument is positive or negative Zero, this method will return Zero.
• If the argument is positive value, this method will return Positive 1.
• If the argument is Negative value, this method will return Negative 1.
• If the argument is NaN, this method will return NaN.

Example 1

Output:

1.0

Example 2

Output:

-1.0

Example 3

Output:

0.0

Example 4

Output:

NaN