---
title: Int128.Words
framework: swift
role: symbol
role_heading: Type Alias
path: swift/int128/words-swift.typealias
---

# Int128.Words

A type that represents the words of a binary integer.

## Declaration

```swift
typealias Words = UInt128.Words
```

## Discussion

Discussion The Words type must conform to the RandomAccessCollection protocol with an Element type of UInt and Index type of Int.