---
title: "simd_make_ulong4_undef(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_make_ulong4_undef(_:)-o0j"
---

# simd_make_ulong4_undef(_:)

Returns a new vector from the specified two-element vector, and other elements undefined.

## Declaration

```swift
func simd_make_ulong4_undef(_ other: simd_ulong2) -> simd_ulong4
```

## See Also

### Functions to Create Four-Element Vectors From Other Vectors

- [simd_make_ulong4(_:)](simd/simd_make_ulong4(_:)-364ux.md)
- [simd_make_ulong4(_:)](simd/simd_make_ulong4(_:)-39may.md)
- [simd_make_ulong4(_:)](simd/simd_make_ulong4(_:)-2zv2b.md)
- [simd_make_ulong4(_:)](simd/simd_make_ulong4(_:)-43wof.md)
- [simd_make_ulong4(_:_:)](simd/simd_make_ulong4(_:_:)-9oy4u.md)
- [simd_make_ulong4_undef(_:)](simd/simd_make_ulong4_undef(_:)-9xbtd.md)