<!--
{
  "availability" : [
    "iOS: 14.0.0 - 17.4.0",
    "iPadOS: 14.0.0 - 17.4.0",
    "macCatalyst: 14.0.0 - 17.4.0",
    "macOS: 11.0.0 - 14.3.0",
    "tvOS: 14.0.0 - 17.4.0"
  ],
  "documentType" : "symbol",
  "framework" : "MLCompute",
  "identifier" : "/documentation/MLCompute/MLCActivationLayer/softPlus(beta:)",
  "metadataVersion" : "0.1.0",
  "role" : "Type Method",
  "symbol" : {
    "kind" : "Type Method",
    "modules" : [
      "ML Compute"
    ],
    "preciseIdentifier" : "c:objc(cs)MLCActivationLayer(cm)softPlusLayerWithBeta:"
  },
  "title" : "softPlus(beta:)"
}
-->

# softPlus(beta:)

Creates an instance of a soft plus activation layer using the beta value you specify for the soft plus formation.

```
class func softPlus(beta: Float) -> Self
```

## Parameters

`beta`

The beta value for the softplus formation.

## Return Value

A new `MLCActivationLayer` instance.

## Discussion

The [`softPlus(beta:)`](/documentation/MLCompute/MLCActivationLayer/softPlus(beta:)) factory type method creates an activation descriptor using [`init(type:a:b:)`](/documentation/MLCompute/MLCActivationDescriptor/init(type:a:b:)), where `type =` [`MLCActivationType.softPlus`](/documentation/MLCompute/MLCActivationType/softPlus), `a = 1.0 / beta`, and `b = beta`, and passes that descriptor to [`init(descriptor:)`](/documentation/MLCompute/MLCActivationLayer/init(descriptor:)).

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)