- Java.lang Package classes
- Java.lang - Home
- Java.lang - Boolean
- Java.lang - Byte
- Java.lang - Character
- Java.lang - Character.Subset
- Java.lang - Character.UnicodeBlock
- Java.lang - Class
- Java.lang - ClassLoader
- Java.lang - Compiler
- Java.lang - Double
- Java.lang - Enum
- Java.lang - Float
- Java.lang - InheritableThreadLocal
- Java.lang - Integer
- Java.lang - Long
- Java.lang - Math
- Java.lang - Number
- Java.lang - Object
- Java.lang - Package
- Java.lang - Process
- Java.lang - ProcessBuilder
- Java.lang - Runtime
- Java.lang - RuntimePermission
- Java.lang - SecurityManager
- Java.lang - Short
- Java.lang - StackTraceElement
- Java.lang - StrictMath
- Java.lang - String
- Java.lang - StringBuffer
- Java.lang - StringBuilder
- Java.lang - System
- Java.lang - Thread
- Java.lang - ThreadGroup
- Java.lang - ThreadLocal
- Java.lang - Throwable
- Java.lang - Void
- Java.lang Package extras
- Java.lang - Interfaces
- Java.lang - Errors
- Java.lang - Exceptions
- Java.lang Package Useful Resources
- Java.lang - Useful Resources
- Java.lang - Discussion
Java - Math signum(double x) Method
Description
The Java Math signum(double d) returns the signum function of the argument; zero if the argument is zero, 1.0 if the argument is greater than zero, -1.0 if the argument is less than zero.Special Cases −
If the argument is NaN, then the result is NaN.
If the argument is positive zero or negative zero, then the result is the same as the argument.
Declaration
Following is the declaration for java.lang.Math.signum() method
public static double signum(double d)
Parameters
d − the floating-point value whose signum is to be returned
Return Value
This method returns the signum function of the argument
Exception
NA
Computing signum Function for a Positive Double Value Example
The following example shows the usage of Math signum() method to get a long value for a positive double value.
package com.tutorialspoint; public class MathDemo { public static void main(String[] args) { // get a double number double x = 1654.9874; // find the signum of the value System.out.println("Math.signum(" + x + ")=" + Math.signum(x)); } }
Output
Let us compile and run the above program, this will produce the following result −
Math.signum(1654.9874)=1.0
Computing signum Function for a Negative Double Value Example
The following example shows the usage of Math signum() method to get a signum of a negative double value.
package com.tutorialspoint; public class MathDemo { public static void main(String[] args) { // get a double number double x = -9765.134; // find the signum of the value System.out.println("Math.signum(" + x + ")=" + Math.signum(x)); } }
Output
Let us compile and run the above program, this will produce the following result −
Math.signum(-9765.134)=-1.0
Computing signum Function for a Zero Double Value Example
The following example shows the usage of Math signum() method to get a value of a zero double values.
package com.tutorialspoint; public class MathDemo { public static void main(String[] args) { // get double numbers double x = 0.0; // find the signum of the value System.out.println("Math.signum(" + x + ")=" + Math.signum(x)); } }
Output
Let us compile and run the above program, this will produce the following result −
Math.signum(0.0)=0.0
To Continue Learning Please Login
Login with Google