---
title: significandBitPattern
framework: swift
role: symbol
role_heading: Instance Property
path: swift/float80/significandbitpattern
---

# significandBitPattern

The raw encoding of the value’s significand field.

## Declaration

```swift
var significandBitPattern: UInt64 { get }
```

## Discussion

Discussion The significandBitPattern property does not include the leading integral bit of the significand, even for types like Float80 that store it explicitly.