---
title: "vvasin(_:_:_:)"
framework: accelerate
role: symbol
role_heading: Function
path: "accelerate/vvasin(_:_:_:)"
---

# vvasin(_:_:_:)

Calculates the arcsine of each element in an array of double-precision values.

## Declaration

```swift
func vvasin(_: UnsafeMutablePointer<Double>, _: UnsafePointer<Double>, _: UnsafePointer<Int32>)
```

## Discussion

Discussion Parameters: The calculated values are in the range [-pi/2, +pi/2]. If x is +/-0, the result preserves the signed zero. If |x[i]| > 1, the result is NaN.

## See Also

### Array-Oriented Trigonometric Functions

- [acos(_:)](accelerate/vforce/acos(_:)-8srk.md)
- [acos(_:)](accelerate/vforce/acos(_:)-3hl5t.md)
- [acos(_:result:)](accelerate/vforce/acos(_:result:)-3c9qz.md)
- [acos(_:result:)](accelerate/vforce/acos(_:result:)-6rc2f.md)
- [asin(_:)](accelerate/vforce/asin(_:)-454ds.md)
- [asin(_:)](accelerate/vforce/asin(_:)-8vvt1.md)
- [asin(_:result:)](accelerate/vforce/asin(_:result:)-94jmy.md)
- [asin(_:result:)](accelerate/vforce/asin(_:result:)-ooti.md)
- [atan(_:)](accelerate/vforce/atan(_:)-1ghr3.md)
- [atan(_:)](accelerate/vforce/atan(_:)-5ejvk.md)
- [atan(_:result:)](accelerate/vforce/atan(_:result:)-691jp.md)
- [atan(_:result:)](accelerate/vforce/atan(_:result:)-6bb8n.md)
- [atan2(x:y:)](accelerate/vforce/atan2(x:y:)-h54u.md)
- [atan2(x:y:)](accelerate/vforce/atan2(x:y:)-3lku3.md)
- [atan2(x:y:result:)](accelerate/vforce/atan2(x:y:result:)-184b6.md)