NumberUtil (FreeMarker 2.3.23 API)

java.lang.Object
- freemarker.template.utility.NumberUtil

```
public class NumberUtil
extends Object
```
Number- and math-related utilities.

Since:

2.3.20

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static int`	`getSignum(Number num)`
`static boolean`	`isInfinite(Number num)`
`static boolean`	`isIntegerBigDecimal(BigDecimal bd)`	Tells if a `BigDecimal` stores a whole number.
`static boolean`	`isNaN(Number num)`
`static int`	`toIntExact(Number num)`	Converts a `Number` to `int` whose mathematical value is exactly the same as of the original number.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - isInfinite
```
public static boolean isInfinite(Number num)
```
  - isNaN
```
public static boolean isNaN(Number num)
```
  - getSignum
```
public static int getSignum(Number num)
                     throws ArithmeticException
```
    Returns:
    
    -1 for negative, 0 for zero, 1 for positive.
    
    Throws:
    
    ArithmeticException - if the number is NaN
  - isIntegerBigDecimal
```
public static boolean isIntegerBigDecimal(BigDecimal bd)
```
    Tells if a BigDecimal stores a whole number. For example, it returns true for 1.0000, but false for 1.0001.
    
    Since:
    
    2.3.21
  - toIntExact
```
public static int toIntExact(Number num)
```
    Converts a Number to int whose mathematical value is exactly the same as of the original number.
    
    Throws:
    
    ArithmeticException - if the conversion to int is not possible without losing precision or overflow/underflow.
    
    Since:
    
    2.3.22