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# apply(batchSize:inputA:inputB:output:)

Applies the layer to a set of input array descriptors, writing the result to a set of output array descriptors.

```
func apply(batchSize: Int, inputA: BNNSNDArrayDescriptor, inputB: BNNSNDArrayDescriptor, output: BNNSNDArrayDescriptor) throws
```

## Parameters

`batchSize`

The number of input-output pairs.

`inputA`

The descriptor of the first input.

`inputB`

The descriptor of the second input.

`output`

The descriptor of the output.

---

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