# description A textual representation of the value. ``` var description: String { get } ``` ## Discussion For any finite value, this property provides a string that can be converted back to an instance of `Float` without rounding errors. That is, if `x` is an instance of `Float`, then `Float(x.description) == x` is always true. For any NaN value, the property’s value is “nan”, and for positive and negative infinity its value is “inf” and “-inf”. --- 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)