The java.lang.Math.round() is a built-in math function which returns the closest long to the argument. The result is rounded to an integer by adding 1/2, taking the floor of the result after adding 1/2, and casting the result to type long.
- If the argument is NaN, the result is 0.
- If the argument is negative infinity or any value less than or equal to the value of Integer.MIN_VALUE, the result is equal to the value of Integer.MIN_VALUE.
- If the argument is positive infinity or any value greater than or equal to the value of Integer.MAX_VALUE, the result is equal to the value of Integer.MAX_VALUE.
Syntax:
public static int round(float val) Parameter: val - floating-point value to be rounded to an integer.
Returns:
The method returns the value of the argument rounded to the nearest int value.
Example: To show working of java.lang.Math.round() function
// Java program to demonstrate working// of java.lang.Math.round() methodimport java.lang.Math;    class Gfg {        // driver code    public static void main(String args[])    {        // float numbers      float x = 4567.9874f;        // find the closest int for these floats      System.out.println(Math.round(x));              float y = -3421.134f;        // find the closest int for these floats      System.out.println(Math.round(y));                double positiveInfinity = Double.POSITIVE_INFINITY;        // returns the Integer.MAX_VALUE value when       System.out.println(Math.round(positiveInfinity));              }} |
Output:
4568 -3421 9223372036854775807
