Java Math ulp() Method

❮ Math Methods

System.out.println(Math.ulp(1.0));
System.out.println(Math.ulp(1.0f));
System.out.println(Math.ulp(5000000.0));
System.out.println(Math.ulp(5000000.0f));
System.out.println(Math.ulp(50000000.0));
System.out.println(Math.ulp(50000000.0f));

Definition and Usage

The ulp() method returns the unit of least precision of a number.

The unit of least precision is the smallest step you can take up or down from a number. For example, the ulp for 50000000.0f is 4.0, so the next number above it than can be represented with a float data type is 50000004.0f.

Note: The double data type has a lot more precision than the float data type, so the ulp is smaller.

Note: Larger numbers have less precision than smaller numbers, that means the ulp is larger.

Note: The sign of a number does not affect the ulp.

Syntax

public static double ulp(double number)

public static float ulp(float number)

Parameter Values

Technical Details