# distanceSquared(_:_:) Returns the single-precision distance squared between two points in n-dimensional space. ``` static func distanceSquared(_ pointA: U, _ pointB: V) -> Float where U : AccelerateBuffer, V : AccelerateMutableBuffer, U.Element == Float, V.Element == Float ``` ## Parameters `pointA` An array that contains the coordinates of the first point. `pointB` An array that contains the coordinates of the second point. ## Discussion This function calculates the sum of squares of the differences of corresponding elements of vectors `A` and `B`, using the following operation: ```objc C[0] = sum((A[n] - B[n]) ** 2, 0 <= n < N); ``` For example, the following code calculates the distance squared between the two four-dimensional points `pointA` and `pointB`: ```swift let pointA: [Float] = [-1, 0, -2, 1] let pointB: [Float] = [ 2, 1, 4, 3] let distanceSquared = vDSP.distanceSquared(pointA, pointB) print("distance²", distanceSquared) // Prints "distance² 50.0". ``` --- 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)