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# &*=(_:_:)

Multiplies two values and stores the result in the left-hand-side
variable, wrapping any overflow.

```
static func &*= (lhs: inout Self, rhs: Self)
```

## Parameters

`lhs`

The first value to multiply.

`rhs`

The second value to multiply.

## Discussion

The masking multiplication assignment operator (`&*=`) silently wraps
any overflow that occurs during the operation. In the following example,
the product of `10` and `50` is greater than the maximum representable
`Int8` value, so the result is the partial value after discarding the
overflowing bits.

```
var x: Int8 = 10
x &*= 5
// x == 50
var y: Int8 = 10
y &*= 50
// y == -12 (after overflow)
```

For more about arithmetic with overflow operators, see 
[Overflow
Operators](https://docs.swift.org/swift-book/LanguageGuide/AdvancedOperators.html#ID37) in *[The Swift Programming Language](https://docs.swift.org/swift-book/)*.

---

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