# mm256_dp_ps(v256, v256, int)

> Conditionally multiply the packed single-precision (32-bit) floating-point elements in a and b using the high 4 bits in imm8, sum the four products, and conditionally store the sum in dst using the low 4 bits of imm8.

## Definition

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

```csharp
public static v256 mm256_dp_ps(v256 a, v256 b, int imm8)
```

### Parameters

**** (\[v256]\(/engine/6000.7/script-reference/unity/burst/intrinsics/v256)): Vector a**** (\[v256]\(/engine/6000.7/script-reference/unity/burst/intrinsics/v256)): Vector b**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): imm8

### Returns

| Type                                                                   | Description |
| ---------------------------------------------------------------------- | ----------- |
| [v256](/engine/6000.7/script-reference/unity/burst/intrinsics/v256.md) | Vector      |

### Remarks

\_\_\_\_ VDPPS ymm1, ymm2, ymm3/v256, imm8 Multiplies the packed single precision floating point values in the first source operand with the packed single-precision floats in the second source. Each of the four resulting single-precision values is conditionally summed depending on a mask extracted from the high 4 bits of the immediate operand. This sum is broadcast to each of 4 positions in the destination if the corresponding bit of the mask selected from the low 4 bits of the immediate operand is "1". If the corresponding low bit 0-3 of the mask is zero, the destination is set to zero. The process is replicated for the high elements of the destination.