# rcp

> Returns the reciprocal a float value.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Mathematics](/engine/6000.6/script-reference/unity/mathematics.md)
* **Assembly:** UnityEngine.MathematicsModule

## rcp(float)

Returns the reciprocal a float value.

```csharp
public static float rcp(float x)
```

### Parameters

**** (\[float]\(https\://learn.microsoft.com/dotnet/api/system.single)): Input value.

### Returns

| Type                                                          | Description                  |
| ------------------------------------------------------------- | ---------------------------- |
| [float](https://learn.microsoft.com/dotnet/api/system.single) | The reciprocal of the input. |

## rcp(float2)

Returns the componentwise reciprocal a float2 vector.

```csharp
public static float2 rcp(float2 x)
```

### Parameters

**** (\[float2]\(/engine/6000.6/script-reference/unity/mathematics/float2)): Input value.

### Returns

| Type                                                                  | Description                                |
| --------------------------------------------------------------------- | ------------------------------------------ |
| [float2](/engine/6000.6/script-reference/unity/mathematics/float2.md) | The componentwise reciprocal of the input. |

## rcp(float3)

Returns the componentwise reciprocal a float3 vector.

```csharp
public static float3 rcp(float3 x)
```

### Parameters

**** (\[float3]\(/engine/6000.6/script-reference/unity/mathematics/float3)): Input value.

### Returns

| Type                                                                  | Description                                |
| --------------------------------------------------------------------- | ------------------------------------------ |
| [float3](/engine/6000.6/script-reference/unity/mathematics/float3.md) | The componentwise reciprocal of the input. |

## rcp(float4)

Returns the componentwise reciprocal a float4 vector.

```csharp
public static float4 rcp(float4 x)
```

### Parameters

**** (\[float4]\(/engine/6000.6/script-reference/unity/mathematics/float4)): Input value.

### Returns

| Type                                                                  | Description                                |
| --------------------------------------------------------------------- | ------------------------------------------ |
| [float4](/engine/6000.6/script-reference/unity/mathematics/float4.md) | The componentwise reciprocal of the input. |

## rcp(double)

Returns the reciprocal a double value.

```csharp
public static double rcp(double x)
```

### Parameters

**** (\[double]\(https\://learn.microsoft.com/dotnet/api/system.double)): Input value.

### Returns

| Type                                                           | Description                  |
| -------------------------------------------------------------- | ---------------------------- |
| [double](https://learn.microsoft.com/dotnet/api/system.double) | The reciprocal of the input. |

## rcp(double2)

Returns the componentwise reciprocal a double2 vector.

```csharp
public static double2 rcp(double2 x)
```

### Parameters

**** (\[double2]\(/engine/6000.6/script-reference/unity/mathematics/double2)): Input value.

### Returns

| Type                                                                    | Description                                |
| ----------------------------------------------------------------------- | ------------------------------------------ |
| [double2](/engine/6000.6/script-reference/unity/mathematics/double2.md) | The componentwise reciprocal of the input. |

## rcp(double3)

Returns the componentwise reciprocal a double3 vector.

```csharp
public static double3 rcp(double3 x)
```

### Parameters

**** (\[double3]\(/engine/6000.6/script-reference/unity/mathematics/double3)): Input value.

### Returns

| Type                                                                    | Description                                |
| ----------------------------------------------------------------------- | ------------------------------------------ |
| [double3](/engine/6000.6/script-reference/unity/mathematics/double3.md) | The componentwise reciprocal of the input. |

## rcp(double4)

Returns the componentwise reciprocal a double4 vector.

```csharp
public static double4 rcp(double4 x)
```

### Parameters

**** (\[double4]\(/engine/6000.6/script-reference/unity/mathematics/double4)): Input value.

### Returns

| Type                                                                    | Description                                |
| ----------------------------------------------------------------------- | ------------------------------------------ |
| [double4](/engine/6000.6/script-reference/unity/mathematics/double4.md) | The componentwise reciprocal of the input. |