# vU1024SubS(_:_:_:) Unsigned 1024-bit subtraction with saturation (clipping). ``` func vU1024SubS(_ a: UnsafePointer, _ b: UnsafePointer, _ result: UnsafeMutablePointer) ``` --- 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)