# ReadPackedDouble(in StreamCompressionModel)

> Reads a 8-byte floating point value from the data stream using a StreamCompressionModel.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Collections](/engine/6000.7/script-reference/unity/collections.md)
* **Assembly:** UnityEngine.ManagedKernelModule

## ReadPackedDouble(StreamCompressionModel)

```csharp
public double ReadPackedDouble(in StreamCompressionModel model)
```

### Parameters

**** (\[StreamCompressionModel]\(/engine/6000.7/script-reference/unity/collections/streamcompressionmodel)): [StreamCompressionModel](/engine/6000.7/script-reference/unity/collections/streamcompressionmodel.md) model for reading value in a packed manner.

### Returns

| Type                                                           | Description                                                                                                 |
| -------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
| [double](https://learn.microsoft.com/dotnet/api/system.double) | A 8-byte floating point value read from the current stream, or 0 if the end of the stream has been reached. |