---
title: "rsqrt(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/rsqrt(_:)-6peaq"
---

# rsqrt(_:)

Returns the reciprocal square root of each element in a vector.

## Declaration

```swift
func rsqrt(_ x: SIMD3<Float>) -> SIMD3<Float>
```

## See Also

### Reciprocal and Reciprocal Square Root Functions

- [simd_recip(_:)](simd/simd_recip(_:)-8jz2r.md)
- [recip(_:)](simd/recip(_:)-8p7rb.md)
- [simd_fast_recip(_:)](simd/simd_fast_recip(_:)-ohgm.md)
- [simd_precise_recip(_:)](simd/simd_precise_recip(_:)-61j27.md)
- [simd_rsqrt(_:)](simd/simd_rsqrt(_:)-rh1j.md)
- [simd_fast_rsqrt(_:)](simd/simd_fast_rsqrt(_:)-80wq1.md)
- [simd_precise_rsqrt(_:)](simd/simd_precise_rsqrt(_:)-zs51.md)