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Text lesson

signum()

Example

“Provide the sign of various numbers.”

System.out.println(Math.signum(12));
System.out.println(Math.signum(0.5));
System.out.println(Math.signum(0));
System.out.println(Math.signum(-0.25));
System.out.println(Math.signum(-6));

Definition and Usage

The signum() method determines the sign of a number, with 1 indicating positivity, -1 indicating negativity, and 0 representing zero.

Syntax

public static double signum(double number)

public static float signum(float number)

Parameter Values

Parameter	Description
number	“Necessary. A number for which the sign needs to be determined.”

Technical Details

Returns:	A double or float value indicating the sign of a number, returning 1 for positive numbers, -1 for negative numbers, and 0 for zero.
Java Version:	1.5+