---
title: "simd_make_char64_undef(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_make_char64_undef(_:)-ax60"
---

# simd_make_char64_undef(_:)

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

## Declaration

```swift
func simd_make_char64_undef(_ other: simd_char16) -> simd_char64
```

## See Also

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

- [simd_make_char64(_:)](simd/simd_make_char64(_:)-mo7n.md)
- [simd_make_char64(_:)](simd/simd_make_char64(_:)-kchm.md)
- [simd_make_char64(_:)](simd/simd_make_char64(_:)-18pa1.md)
- [simd_make_char64(_:)](simd/simd_make_char64(_:)-1mmet.md)
- [simd_make_char64(_:)](simd/simd_make_char64(_:)-kijk.md)
- [simd_make_char64(_:)](simd/simd_make_char64(_:)-747mj.md)
- [simd_make_char64(_:)](simd/simd_make_char64(_:)-v4n8.md)
- [simd_make_char64(_:_:)](simd/simd_make_char64(_:_:).md)
- [simd_make_char64_undef(_:)](simd/simd_make_char64_undef(_:)-9r2mn.md)
- [simd_make_char64_undef(_:)](simd/simd_make_char64_undef(_:)-9ui3q.md)
- [simd_make_char64_undef(_:)](simd/simd_make_char64_undef(_:)-cbyu.md)
- [simd_make_char64_undef(_:)](simd/simd_make_char64_undef(_:)-p5ey.md)
- [simd_make_char64_undef(_:)](simd/simd_make_char64_undef(_:)-5axfx.md)