Re: Rounding doubles in Java?

Hi!

If you want rounding to the nearest higher/lower integer value depending
on the value of the fraction you can use the method round() shown below:

public class TestRounding
{
 public static double round(double val)
 {
  return val >= 0.0 ? Math.floor(val + .5) : Math.ceil(val - .5);
 }

    public static void main(String args[])
    {
        double val;

  // Round up.
  // ---------
        val = 25.56;
        System.out.println("round(" +val +") = " +round(val));
        val = -25.56;
        System.out.println("round(" +val +") = " +round(val));

  // Round down.
  // -----------
        val = 25.1;
     System.out.println("round(" +val +") = " +round(val));
        val = -25.1;
     System.out.println("round(" +val +") = " +round(val));

  // No rounding.
  // ------------
        val = 25.0;
     System.out.println("round(" +val +") = " +round(val));
        val = -25.0;
     System.out.println("round(" +val +") = " +round(val));
 }
}

I hope that it is what you are asking

Thorbjørn
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