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

# BNNSCopy(_:_:_:)

Copies the contents of an n-dimensional array descriptor to another of the same shape.

## Declaration

```swift
func BNNSCopy(_ dest: UnsafeMutablePointer<BNNSNDArrayDescriptor>, _ src: UnsafePointer<BNNSNDArrayDescriptor>, _ filter_params: UnsafePointer<BNNSFilterParameters>?) -> Int32
```

## Parameters

- `dest`: The descriptor of the desination.
- `src`: The descriptor of the source.
- `filter_params`: The filter runtime parameters.

## See Also

### Utility functions

- [copy(_:to:filterParameters:)](accelerate/bnns/copy(_:to:filterparameters:).md)
- [transpose(input:output:firstTransposeAxis:secondTransposeAxis:filterParameters:)](accelerate/bnns/transpose(input:output:firsttransposeaxis:secondtransposeaxis:filterparameters:).md)
- [BNNSTranspose(_:_:_:_:_:)](accelerate/bnnstranspose(_:_:_:_:_:).md)
- [BNNSGetPointer(_:_:)](accelerate/bnnsgetpointer(_:_:).md)
- [BNNSPointerSpecifier](accelerate/bnnspointerspecifier.md)
- [BNNS.GramLayer](accelerate/bnns/gramlayer.md)
- [BNNSLayerParametersGram](accelerate/bnnslayerparametersgram.md)
- [BNNSFilterCreateLayerGram(_:_:)](accelerate/bnnsfiltercreatelayergram(_:_:).md)
- [clip(to:input:output:)](accelerate/bnns/clip(to:input:output:).md)
- [clipByNorm(threshold:input:output:axes:)](accelerate/bnns/clipbynorm(threshold:input:output:axes:).md)
- [clipByGlobalNorm(threshold:inputs:outputs:globalNorm:)](accelerate/bnns/clipbyglobalnorm(threshold:inputs:outputs:globalnorm:).md)
- [BNNSClipByValue(_:_:_:_:)](accelerate/bnnsclipbyvalue(_:_:_:_:).md)
- [BNNSClipByNorm(_:_:_:_:)](accelerate/bnnsclipbynorm(_:_:_:_:).md)
- [BNNSClipByGlobalNorm(_:_:_:_:_:)](accelerate/bnnsclipbyglobalnorm(_:_:_:_:_:).md)
- [copyBandPart(_:to:lowerBandCount:upperBandCount:filterParameters:)](accelerate/bnns/copybandpart(_:to:lowerbandcount:upperbandcount:filterparameters:).md)