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# compare(_:_:using:output:)

Performs an elementwise comparison of two array descriptors using the specified relational operator.

```
static func compare(_ inputA: BNNSNDArrayDescriptor, _ inputB: BNNSNDArrayDescriptor, using relationalOperator: BNNS.RelationalOperator, output: BNNSNDArrayDescriptor) throws
```

## Parameters

`inputA`

The descriptor of the first input.

`inputB`

The descriptor of the second input.

`relationalOperator`

The operator for comparison.

`output`

The descriptor of the output.

## Topics

### Specifying a Relational Operator

[`struct RelationalOperator`](/documentation/Accelerate/BNNS/RelationalOperator)

Constants that describe relational operations.


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