# vrev64q_u8(v128)

> Reverse elements in 64-bit doublewords (vector). This instruction reverses the order of 8-bit, 16-bit, or 32-bit elements in each doubleword of the vector in the source SIMD&FP register, places the results into a vector, and writes the vector to the destination SIMD&FP register.Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped. Equivalent instruction: REV64 Vd.16B,Vn.16B

## Definition

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

```csharp
public static v128 vrev64q_u8(v128 a0)
```

### Parameters

**** (\[v128]\(/engine/6000.7/script-reference/unity/burst/intrinsics/v128)): 128-bit vector a0

### Returns

| Type                                                                   | Description    |
| ---------------------------------------------------------------------- | -------------- |
| [v128](/engine/6000.7/script-reference/unity/burst/intrinsics/v128.md) | 128-bit vector |