---
title: "simd_make_long8_undef(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_make_long8_undef(_:)-5uowh"
---

# simd_make_long8_undef(_:)

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

## Declaration

```swift
func simd_make_long8_undef(_ other: simd_long2) -> simd_long8
```

## See Also

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

- [simd_make_long8(_:)](simd/simd_make_long8(_:)-7pzt7.md)
- [simd_make_long8(_:)](simd/simd_make_long8(_:)-7netg.md)
- [simd_make_long8(_:)](simd/simd_make_long8(_:)-7wvxt.md)
- [simd_make_long8(_:)](simd/simd_make_long8(_:)-6saal.md)
- [simd_make_long8(_:_:)](simd/simd_make_long8(_:_:).md)
- [simd_make_long8_undef(_:)](simd/simd_make_long8_undef(_:)-5y3qm.md)
- [simd_make_long8_undef(_:)](simd/simd_make_long8_undef(_:)-59t0j.md)