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Java signum() method with Examples
The java.lang.Math.signum(float f) returns the signum function of the argument; zero if the argument is zero, 1.0f if the argument is greater than zero, -1.0f if the argument is less than zero.
Let us now see an example −
Example
import java.security.*;
import java.util.*;
public class Main {
public static void main(String[] argv) {
// get two float numbers
float x = 50.14f;
float y = -4f;
// call signum for both floats and print the result
System.out.println("Math.signum(" + x + ")=" + Math.signum(x));
System.out.println("Math.signum(" + y + ")=" + Math.signum(y));
}
}Output
Math.signum(50.14)=1.0 Math.signum(-4.0)=-1.0
Let us now see another example −
Example
import java.security.*;
import java.util.*;
public class Main {
public static void main(String[] argv) {
double a = 5;
double nanVal = Double.NaN;
System.out.println(Math.signum(a));
a = -10;
System.out.println(Math.signum(a));
a = 0;
System.out.println(Math.signum(a));
System.out.println(Math.signum(nanVal));
}
}Output
1.0 -1.0 0.0 NaN
Updated on: 23-Sep-2019
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