<!--
{
  "availability" : [

  ],
  "documentType" : "symbol",
  "framework" : "Accelerate",
  "identifier" : "/documentation/simd/simd_smoothstep(_:_:_:)-e0ov",
  "metadataVersion" : "0.1.0",
  "role" : "Function",
  "symbol" : {
    "kind" : "Function",
    "modules" : [
      "simd"
    ],
    "preciseIdentifier" : "c:@F@simd_smoothstep#]2d#S0_#S0_#"
  },
  "title" : "simd_smoothstep(_:_:_:)"
}
-->

# simd_smoothstep(_:_:_:)

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

```
func simd_smoothstep(_ edge0: simd_double2, _ edge1: simd_double2, _ x: simd_double2) -> simd_double2
```

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)