---
title: "init(alpha:beta:transA:transB:quadratic:a_is_weights:b_is_weights:iA_desc:iB_desc:o_desc:)"
framework: accelerate
role: symbol
role_heading: Initializer
path: "accelerate/bnnslayerparametersbroadcastmatmul/init(alpha:beta:transa:transb:quadratic:a_is_weights:b_is_weights:ia_desc:ib_desc:o_desc:)"
---

# init(alpha:beta:transA:transB:quadratic:a_is_weights:b_is_weights:iA_desc:iB_desc:o_desc:)

Returns a new broadcast matrix multiply layer parameters structure from the specified parameters.

## Declaration

```swift
init(alpha: Float, beta: Float, transA: Bool, transB: Bool, quadratic: Bool, a_is_weights: Bool, b_is_weights: Bool, iA_desc: BNNSNDArrayDescriptor, iB_desc: BNNSNDArrayDescriptor, o_desc: BNNSNDArrayDescriptor)
```

## Parameters

- `alpha`: A value to scale the result.
- `beta`: A value, that must be either 0.0 or 1.0, you use to scale the existing output before the operation adds it to the result.
- `transA`: A Boolean value that transposes the last two dimensions of matrix A.
- `transB`: A Boolean value that transposes the last two dimensions of matrix B.
- `quadratic`: A Boolean value that determines whether the operation multiplies matrix A by itself.
- `a_is_weights`: A Boolean value that determines whether to treat matrix A as weights.
- `b_is_weights`: A Boolean value that determines whether to treat matrix B as weights.
- `iA_desc`: The descriptor of matrix A.
- `iB_desc`: The descriptor of matrix B.
- `o_desc`: The descriptor of the output.

## See Also

### Initializers

- [init()](accelerate/bnnslayerparametersbroadcastmatmul/init().md)