---
title: "simd_make_float3_undef(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_make_float3_undef(_:)-4yqj8"
---

# simd_make_float3_undef(_:)

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

## Declaration

```swift
func simd_make_float3_undef(_ other: Float) -> simd_float3
```

## See Also

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

- [simd_make_float3(_:)](simd/simd_make_float3(_:)-1lvzk.md)
- [simd_make_float3(_:_:_:)](simd/simd_make_float3(_:_:_:).md)