Related Articles

# BigDecimal ulp() Method in Java

• Last Updated : 04 Dec, 2018

The java.math.BigDecimal.ulp() is an inbuilt method in Java that returns the size of an ulp(unit in the last place) of this BigDecimal.

• An ulp of a nonzero BigDecimal value is defined as the positive distance between this value and the BigDecimal value next larger in magnitude with the same number of digits.
• An ulp of a zero value is numerically equal to 1 with the scale of this. The result is stored with the same scale as this so the result for zero and nonzero values is equal to [1, this.scale()].

Syntax:

```public BigDecimal ulp()
```

Parameter: The method does not accept any parameter.

Return value: This method returns the size of an ulp of BigDecimal.

Examples:

```Input: 4.25
Output: 0.01

Input: 1789
Output: 1```

Below programs illustrates the above mentioned method:
Program 1:

 `// Program to illustrate the ulp() method of BigDecimal `` ` `import` `java.math.*;`` ` `public` `class` `gfg {`` ` `    ``public` `static` `void` `main(String[] args)``    ``{`` ` `        ``// Assigning BigDecimal object``        ``BigDecimal b1 = ``new` `BigDecimal(``"1789"``);``        ``BigDecimal b2 = ``new` `BigDecimal(``"4.25"``);`` ` `        ``// Assigning ulp value of BigDecimal object b1, b2 to b3, b4``        ``BigDecimal b3 = b1.ulp();``        ``BigDecimal b4 = b2.ulp();`` ` `        ``// Printing b3, b4 values``        ``System.out.println(``"ULP value of "` `+ b1 + ``" is "` `+ b3);``        ``System.out.println(``"ULP value of "` `+ b2 + ``" is "` `+ b4);``    ``}``}`
Output:
```ULP value of 1789 is 1
ULP value of 4.25 is 0.01
```

Program 2:

 `// Program to illustrate the ulp() method of BigDecimal `` ` `import` `java.math.*;`` ` `public` `class` `gfg {`` ` `    ``public` `static` `void` `main(String[] args)``    ``{`` ` `        ``// Assigning BigDecimal object``        ``BigDecimal b1 = ``new` `BigDecimal(``"78645"``);``        ``BigDecimal b2 = ``new` `BigDecimal(``"4.252547"``);`` ` `        ``// Assign ulp value of BigDecimal object b1, b2 to b3, b4``        ``BigDecimal b3 = b1.ulp();``        ``BigDecimal b4 = b2.ulp();`` ` `        ``// Printing b3, b4 values``        ``System.out.println(``"ULP value of "` `+ b1 + ``" is "` `+ b3);``        ``System.out.println(``"ULP value of "` `+ b2 + ``" is "` `+ b4);``    ``}``}`
Output:
```ULP value of 78645 is 1
ULP value of 4.252547 is 0.000001
```

Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.

My Personal Notes arrow_drop_up