---
title: vqsub_u8(v64, v64)
product: Unity Editor
version: '7000.0'
latest_version: '7000.0'
status: This page documents version 7000.0. The latest version is 7000.0.
canonical: https://docs.unity.com/en-us/engine/7000.0/script-reference/unity/burst/intrinsics/arm/neon/vqsub-u8
latest_url: https://docs.unity.com/en-us/engine/7000.0/script-reference/unity/burst/intrinsics/arm/neon/vqsub-u8.md
last_updated: 2026-10-07
generated_at: 2026-11-08T11:07:43.934Z
locale: en-us
---

# vqsub_u8(v64, v64)

> Unsigned saturating Subtract. This instruction subtracts the element values of the second source SIMD&FP register from the corresponding element values of the first source SIMD&FP register, places the results into a vector, and writes the vector to the destination SIMD&FP register.If overflow occurs with any of the results, those results are saturated. If saturation occurs, the cumulative saturation bit FPSR.QC is set.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: UQSUB Vd.8B,Vn.8B,Vm.8B

## Definition

* **Type:** Method
* **Namespace:** [Unity.Burst.Intrinsics](/engine/7000.0/script-reference/unity/burst/intrinsics.md)
* **Assembly:** UnityEngine.BurstModule

```csharp
public static v64 vqsub_u8(v64 a0, v64 a1)
```

### Parameters

**** (\[v64]\(/engine/7000.0/script-reference/unity/burst/intrinsics/v64)): 64-bit vector a0**** (\[v64]\(/engine/7000.0/script-reference/unity/burst/intrinsics/v64)): 64-bit vector a1

### Returns

| Type                                                                 | Description   |
| -------------------------------------------------------------------- | ------------- |
| [v64](/engine/7000.0/script-reference/unity/burst/intrinsics/v64.md) | 64-bit vector |