# maximumMagnitude(_:) Returns the single-precision maximum magnitude of a vector. ``` static func maximumMagnitude(_ vector: U) -> Float where U : AccelerateBuffer, U.Element == Float ``` ## Parameters `vector` The input vector. ## Return Value The maximum magnitude of the vector. ## Discussion This function calculates the maximum magnitude of the first `N` elements of input vector `A`, and writes the result to output scalar `C`.  The following code shows an example of using this function: ```swift let a: [Float] = [-1.5, 2.25, 3.6, 0.2, -0.1, -4.3] let maximumMagnitude = vDSP.maximumMagnitude(a) print("maximumMagnitude", maximumMagnitude) // Prints "maximumMagnitude 4.3" ``` --- 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)