# logicalValue(asTypeTruncatingIfNeeded:) The raw value of the data cast as an integer type and bound by the [`HIDElement`](/documentation/CoreHID/HIDElement)’s logical minimum and logical maximum values. ``` func logicalValue(asTypeTruncatingIfNeeded: IntegerType.Type) -> IntegerType? where IntegerType : FixedWidthInteger ``` ## Parameters `asTypeTruncatingIfNeeded` The type to which to cast the underlying bytes before applying bounds, truncating or extending the bytes as necessary. ## Return Value The data cast as the requested type, or nil if out of bounds. ## Discussion If the raw value is out of bounds, this returns `nil`. For example, if the logical minimum and logical maximum are specified as `1` and `127` respectively, and the raw value is `0`, the logical value is undefined. --- 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)