---
title: "simd_make_int4_undef(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_make_int4_undef(_:)-2wt72"
---

# simd_make_int4_undef(_:)

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

## Declaration

```swift
func simd_make_int4_undef(_ other: Int32) -> simd_int4
```

## See Also

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

- [simd_make_int4(_:)](simd/simd_make_int4(_:)-7vwve.md)
- [simd_make_int4(_:_:_:_:)](simd/simd_make_int4(_:_:_:_:).md)