# mm256_sub_pd(v256, v256)

> Subtract packed double-precision (64-bit) floating-point elements in b from packed double-precision (64-bit) floating-point elements in a, and store the results in dst.

## Definition

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

```csharp
public static v256 mm256_sub_pd(v256 a, v256 b)
```

### Parameters

**** (\[v256]\(/engine/6000.6/script-reference/unity/burst/intrinsics/v256)): Vector a**** (\[v256]\(/engine/6000.6/script-reference/unity/burst/intrinsics/v256)): Vector b

### Returns

| Type                                                                   | Description |
| ---------------------------------------------------------------------- | ----------- |
| [v256](/engine/6000.6/script-reference/unity/burst/intrinsics/v256.md) | Vector      |

### Remarks

\_\_\_\_ VSUBPD ymm1, ymm2, ymm3/v256 Performs an SIMD subtract of the four packed double-precision floating-point values of the second Source operand from the first Source operand, and stores the packed double-precision floating-point results in the destination