---
title: "copy(_:to:count:)"
framework: accelerate
role: symbol
role_heading: Type Method
path: "accelerate/vdsp/copy(_:to:count:)-96jr5"
---

# copy(_:to:count:)

Copies a complex single-precision vector.

## Declaration

```swift
static func copy(_ source: DSPSplitComplex, to destination: inout DSPSplitComplex, count: Int)
```

## Parameters

- `source`: The source complex vector.
- `destination`: The destination complex vector.
- `count`: The number of complex elements in the source and destination vectors.

## Discussion

Discussion The following code copies the complex elements in the source to the destination:     let realSrc = UnsafeMutableBufferPointer<Float>.allocate(capacity: 4)     _ = realSrc.initialize(from: [0, 2, 4, 6])          let imagSrc = UnsafeMutableBufferPointer<Float>.allocate(capacity: 4)     _ = imagSrc.initialize(from: [1, 3, 5, 7])          let source = DSPSplitComplex(realp: realSrc.baseAddress!,                                  imagp: imagSrc.baseAddress!)          let realDst = UnsafeMutableBufferPointer<Float>.allocate(capacity: 4)     let imagDst = UnsafeMutableBufferPointer<Float>.allocate(capacity: 4)

var destination = DSPSplitComplex(realp: realDst.baseAddress!,                                  imagp: imagDst.baseAddress!)          vDSP.copy(source, to: &destination, count: 4)          print(Array(realDst)) // Prints "[0.0, 2.0, 4.0, 6.0]".     print(Array(imagDst)) // Prints "[1.0, 3.0, 5.0, 7.0]".

## See Also

### Vector copying functions

- [copy(_:to:count:)](accelerate/vdsp/copy(_:to:count:)-7zpro.md)