---
title: "simd_smoothstep(_:_:_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_smoothstep(_:_:_:)-5839l"
---

# simd_smoothstep(_:_:_:)

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

## Declaration

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

## See Also

### Interpolation Functions

- [simd_mix(_:_:_:)](simd/simd_mix(_:_:_:)-6aqwp.md)