# mm256_zeroupper()

> Zero the upper 128 bits of all YMM registers; the lower 128-bits of the registers are unmodified.

## Definition

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

```csharp
public static void mm256_zeroupper()
```

### Remarks

\_\_\_\_ VZEROUPPER