# movemask_pd(v128)

> Set each bit of mask "dst" based on the most significant bit of the corresponding packed double-precision (64-bit) floating-point element in "a".

## Definition

* **Type:** Method
* **Namespace:** [Unity.Burst.Intrinsics](/engine/6000.7/script-reference/unity/burst/intrinsics.md)
* **Assembly:** UnityEngine.BurstModule

```csharp
public static int movemask_pd(v128 a)
```

### Parameters

**** (\[v128]\(/engine/6000.7/script-reference/unity/burst/intrinsics/v128)): Vector a

### Returns

| Type                                                       | Description |
| ---------------------------------------------------------- | ----------- |
| [int](https://learn.microsoft.com/dotnet/api/system.int32) | Integer     |