# Java - Math.ulp() Examples

## Methods:

```public static double ulp(double d)
```

Returns the size of an ulp of the argument. An ulp, unit in the last place, of a `double` value is the positive distance between this floating-point value and the `double` value next larger in magnitude. .

Parameters:
`d` - the floating-point value whose ulp is to be returned
Returns:
the size of an ulp of the argument
Since:
1.5

```public static float ulp(float f)
```

Returns the size of an ulp of the argument. An ulp, unit in the last place, of a `float` value is the positive distance between this floating-point value and the `float` value next larger in magnitude.

Parameters:
`f` - the floating-point value whose ulp is to be returned
Returns:
the size of an ulp of the argument
Since:
1.5

## Examples

`package com.logicbig.example.math;public class UlpExample {    public static void main(String... args) {        findLeastPrecision(43.435);        findLeastPrecision(23.521);        findLeastPrecision(Double.MAX_VALUE);        findLeastPrecision(0.0);        findLeastPrecision(0.0 / 0.0);    }    private static void findLeastPrecision(double value) {        double result = Math.ulp(value);        System.out.printf("Math.ulp(%s) = %s %n", value, result);    }} `

#### Output

`Math.ulp(43.435) = 7.105427357601002E-15 Math.ulp(23.521) = 3.552713678800501E-15 Math.ulp(1.7976931348623157E308) = 1.9958403095347198E292 Math.ulp(0.0) = 4.9E-324 Math.ulp(NaN) = NaN `

`package com.logicbig.example.math;public class UlpExample2 {    public static void main(String... args) {        findLeastPrecision(24.395f);        findLeastPrecision(-1.25f);        findLeastPrecision(Float.MAX_VALUE);        findLeastPrecision(0.0f);        findLeastPrecision(0.0f / 0);        findLeastPrecision(-1.0f / 0);    }    private static void findLeastPrecision(float value) {        float result = Math.ulp(value);        System.out.printf("Math.ulp(%s) = %s %n", value, result);    }} `

#### Output

`Math.ulp(24.395) = 1.9073486E-6 Math.ulp(-1.25) = 1.1920929E-7 Math.ulp(3.4028235E38) = 2.028241E31 Math.ulp(0.0) = 1.4E-45 Math.ulp(NaN) = NaN Math.ulp(-Infinity) = Infinity `