# NSDecimalCopy(_:_:) Copies the value of a decimal number. ``` func NSDecimalCopy(_ destination: UnsafeMutablePointer, _ source: UnsafePointer) ``` ## Parameters `destination` A [`Decimal`](/documentation/Foundation/Decimal) reference that receives the copied value. `source` A source [`Decimal`](/documentation/Foundation/Decimal) to copy. ## Discussion Copies the value in `source` to `destination`. For more information, see [Number and Value Programming Topics](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/NumbersandValues/NumbersandValues.html#//apple_ref/doc/uid/10000038i). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)