---
title: FloatingPointClassification.negativeSubnormal
framework: swift
role: symbol
role_heading: Case
path: swift/floatingpointclassification/negativesubnormal
---

# FloatingPointClassification.negativeSubnormal

A negative, nonzero number that does not use the full precision of the floating-point type.

## Declaration

```swift
case negativeSubnormal
```