---
title: "simd_make_half16_undef(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_make_half16_undef(_:)-nn1z"
---

# simd_make_half16_undef(_:)

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

## Declaration

```swift
func simd_make_half16_undef(_ other: simd_half2) -> simd_half16
```

## See Also

### Functions to create 16-element vectors from other vectors

- [simd_make_half16(_:)](simd/simd_make_half16(_:)-7jegv.md)
- [simd_make_half16(_:)](simd/simd_make_half16(_:)-7fwvg.md)
- [simd_make_half16(_:)](simd/simd_make_half16(_:)-7czq5.md)
- [simd_make_half16(_:)](simd/simd_make_half16(_:)-8jb49.md)
- [simd_make_half16(_:)](simd/simd_make_half16(_:)-2eeq3.md)
- [simd_make_half16(_:)](simd/simd_make_half16(_:)-18zo3.md)
- [simd_make_half16_undef(_:)](simd/simd_make_half16_undef(_:)-qkco.md)
- [simd_make_half16_undef(_:)](simd/simd_make_half16_undef(_:)-hd79.md)
- [simd_make_half16_undef(_:)](simd/simd_make_half16_undef(_:)-1lcb5.md)
- [simd_make_half16(_:_:)](simd/simd_make_half16(_:_:).md)