#            
## Overview
When we want to check if an object of type double is finite or infinite, we can use the `Double.isFinite` property.
## Syntax
```swift
Double.isFinite
```
## Return value
The value returned is a boolean value. We get `true` if `Double` is a finite value. Otherwise, we get `false`.
## Code example

// create some double values
let d1 = 12.44
let d2 = Double.infinity
let d3 = Double.infinity / 0.4
let d4 = 0.1

// print the exponents
print(d1.isFinite)
print(d2.isFinite)
print(d3.isFinite)
print(d4.isFinite)

## Explanation
* **Lines 2-5**: We create some double values.
* **Lines 8-11**: We check if the double values we created are finite values and we print the results to the console.

How to check if a double value is finite in Swift

Use Double.isFinite to check if a double value is finite; it returns a boolean value.