# square(_:) Returns a double-precision array containing the square of each element in the supplied vector. ``` static func square(_ vector: U) -> [Double] where U : AccelerateBuffer, U.Element == Double ``` --- 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)