---
title: simd_packed_ulong2
framework: simd
role: symbol
role_heading: Type Alias
path: simd/simd_packed_ulong2
---

# simd_packed_ulong2

A packed vector of two 64-bit unsigned integer element.

## Declaration

```swift
typealias simd_packed_ulong2 = SIMD2<simd_ulong1>
```

## Topics

### Alternative Type Alias

- [packed_ulong2](simd/packed_ulong2.md)

## See Also

### Packed Vector Data Types

- [simd_packed_ulong4](simd/simd_packed_ulong4.md)
- [simd_packed_ulong8](simd/simd_packed_ulong8.md)