# vhsub_s16(v64, v64)

> Signed Halving Subtract. This instruction subtracts the elements in the vector in the second source SIMD&FP register from the corresponding elements in the vector in the first source SIMD&FP register, shifts each result right one bit, places each result into elements of 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: SHSUB Vd.4H,Vn.4H,Vm.4H

## Definition

* **Type:** Method
* **Namespace:** [Unity.Burst.Intrinsics](/engine/6000.6/script-reference/unity/burst/intrinsics.md)
* **Assembly:** UnityEngine.BurstModule

```csharp
public static v64 vhsub_s16(v64 a0, v64 a1)
```

### Parameters

**** (\[v64]\(/engine/6000.6/script-reference/unity/burst/intrinsics/v64)): 64-bit vector a0**** (\[v64]\(/engine/6000.6/script-reference/unity/burst/intrinsics/v64)): 64-bit vector a1

### Returns

| Type                                                                 | Description   |
| -------------------------------------------------------------------- | ------------- |
| [v64](/engine/6000.6/script-reference/unity/burst/intrinsics/v64.md) | 64-bit vector |