---
title: "simd_make_char16_undef(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_make_char16_undef(_:)-9uhre"
---

# simd_make_char16_undef(_:)

Returns a new vector with the first element set to a scalar value, and other elements undefined.

## Declaration

```swift
func simd_make_char16_undef(_ other: CChar) -> simd_char16
```

## See Also

### Functions to Create Sixteen-Element Vectors From Scalar Values

- [simd_make_char16(_:)](simd/simd_make_char16(_:)-9skzf.md)