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# nextUp

The least representable value that compares greater than this value.

```
var nextUp: Double { get }
```

## Discussion

For any finite value `x`, `x.nextUp` is greater than `x`. For `nan` or
`infinity`, `x.nextUp` is `x` itself. The following special cases also
apply:

- If `x` is `-infinity`, then `x.nextUp` is `-greatestFiniteMagnitude`.
- If `x` is `-leastNonzeroMagnitude`, then `x.nextUp` is `-0.0`.
- If `x` is zero, then `x.nextUp` is `leastNonzeroMagnitude`.
- If `x` is `greatestFiniteMagnitude`, then `x.nextUp` is `infinity`.

---

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