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# isSubnormal

A Boolean value indicating whether the instance is subnormal.

```
var isSubnormal: Bool { get }
```

## Discussion

A *subnormal* value is a nonzero number that has a lesser magnitude than
the smallest normal number. Subnormal values don’t use the full
precision available to values of a type.

Zero is neither a normal nor a subnormal number. Subnormal numbers are
often called *denormal* or *denormalized*—these are different names
for the same concept.

---

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