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Text lesson

copySign()

Example

Return the value of a number with the sign of another:

System.out.println(Math.copySign(-4.7, 3));
System.out.println(Math.copySign(4.7, -2.5));
System.out.println(Math.copySign(3, 4)); 
System.out.println(Math.copySign(-2.5, -4.7));

Definition and Usage

The copySign() method retrieves the value of the first number but adopts the sign of the second number.

Syntax

One of the following:

public static double copySign(double value, double sign)

public static float copySign(float value, float sign)

Parameter Values

Parameter	Description
value	Mandatory: A number that dictates the value.
sign	Necessary: A number that dictates the sign.

Technical Details

Returns	A double or float with the value of the first number and the sign of the second number.
Java Version	1.6+