# zhptrd_(_:_:_:_:_:_:_:) ``` func zhptrd_(_ uplo: UnsafePointer, _ n: UnsafePointer<__LAPACK_int>, _ ap: OpaquePointer?, _ d: UnsafeMutablePointer?, _ e: UnsafeMutablePointer?, _ tau: OpaquePointer?, _ info: UnsafeMutablePointer<__LAPACK_int>) ``` --- 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)