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

# simd_smoothstep(_:_:_:)

Returns an element-wise smoothly interpolated value between two vectors.

## Declaration

```swift
func simd_smoothstep(_ edge0: simd_half3, _ edge1: simd_half3, _ x: simd_half3) -> simd_half3
```

## See Also

### Interpolation functions

- [simd_mix(_:_:_:)](simd/simd_mix(_:_:_:)-4co2a.md)