---
title: NSSwappedDouble
framework: foundation
role: symbol
role_heading: Structure
path: foundation/nsswappeddouble
---

# NSSwappedDouble

Opaque structure containing endian-independent double value.

## Declaration

```swift
struct NSSwappedDouble
```

## Overview

Overview The fields of an NSSwappedDouble are private.

## Topics

### Initializers

- [init()](foundation/nsswappeddouble/init().md)
- [init(v:)](foundation/nsswappeddouble/init(v:).md)

### Instance Properties

- [v](foundation/nsswappeddouble/v.md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Constants

- [NSSwappedFloat](foundation/nsswappedfloat.md)
- [Byte Order](foundation/byte-order-constants.md)