---
title: "*=(_:_:)"
framework: spatial
role: symbol
role_heading: Operator
path: "spatial/rotation3dfloat/*=(_:_:)"
---

# *=(_:_:)

Calculates the product of two rotations and stores the result in the left-hand-side variable.

## Declaration

```swift
static func *= (lhs: inout Rotation3DFloat, rhs: Rotation3DFloat)
```

## Parameters

- `lhs`: The first value.
- `rhs`: The second value.