---
title: "negativeAbsolute(_:result:)"
framework: accelerate
role: symbol
role_heading: Type Method
path: "accelerate/vdsp/negativeabsolute(_:result:)-85gj0"
---

# negativeAbsolute(_:result:)

Calculates the negative absolute value of each element in the supplied single-precision vector.

## Declaration

```swift
static func negativeAbsolute<U, V>(_ vector: U, result: inout V) where U : AccelerateBuffer, V : AccelerateMutableBuffer, U.Element == Float, V.Element == Float
```

## Parameters

- `vector`: The source vector.
- `result`: On output, the negative absolute values of the elements in the source vector.

## Discussion

Discussion For example, the following code calculates the negative absolute values of the elements of an array:     let values: [Float] = [-1, 2, -3, 4, -5, 6, -7, 8]          let negativeAbsoluteValues = [Float](unsafeUninitializedCapacity: values.count) {         buffer, initializedCount in                  vDSP.negativeAbsolute(values, result: &buffer)                  initializedCount = values.count     }          // Prints "[-1.0, -2.0, -3.0, -4.0, -5.0, -6.0, -7.0, -8.0]".     print(negativeAbsoluteValues)

## See Also

### Vector negative absolute functions

- [negativeAbsolute(_:)](accelerate/vdsp/negativeabsolute(_:)-66a7a.md)
- [negativeAbsolute(_:)](accelerate/vdsp/negativeabsolute(_:)-1b5m6.md)
- [negativeAbsolute(_:result:)](accelerate/vdsp/negativeabsolute(_:result:)-1gpcy.md)