---
title: "bitwiseOr(_:ordering:)"
framework: synchronization
role: symbol
role_heading: Instance Method
path: "synchronization/atomic/bitwiseor(_:ordering:)-4y864"
---

# bitwiseOr(_:ordering:)

Perform an atomic bitwise OR operation and return the old and new value, applying the specified memory ordering.

## Declaration

```swift
@discardableResult func bitwiseOr(_ operand: Int128, ordering: AtomicUpdateOrdering) -> (oldValue: Int128, newValue: Int128)
```

## Parameters

- `operand`: An integer value.
- `ordering`: The memory ordering to apply on this operation.

## Return Value

Return Value A tuple containing the original value before the operation and the new value after the operation.