Java Math.copySign() Method with Examples

by Online Tutorials Library July 22, 2022

Java Math.copySign() method

The java.lang.Math.copySign () is used to return the first argument with the sign of the second argument.

Syntax

  public static double copySign(double a, double b)  public static float copySign(float a, float b)  

Parameter

  a = the argument providing the magnitude of the result  b = the argument providing the sign of the result  

Return

  This method returns the magnitude of the first argument with the sign of the second argument.  

Example 1

  public class CopySignExample1  {      public static void main(String[] args)       {          double x = 740.4;          double y = -29.1;          // return -740.4 because second argument is negative            System.out.println(Math.copySign(x, y));      }  }  

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Output:

-740.4

Example 2

  public class CopySignExample2  {      public static void main(String[] args)       {          double x = -580.73;          double y = 26.3;          // return 580.73 because second argument y is positive          System.out.println(Math.copySign(x, y));      }  }  

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Output:

580.73

Example 3

  public class CopySignExample3  {      public static void main(String[] args)       {          float x = -788.63f;          float y = 26.9f;          // return -26.9 because second argument x is negative          System.out.println(Math.copySign(y, x));      }  }  

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Output:

-26.9

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Java Math.copySign() Method with Examples

Java Math.copySign() method

Syntax

Parameter

Return

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