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# CMTIMERANGE_IS_INDEFINITE

Returns a Boolean value that indicates whether a time range is indefinite.

```
#define CMTIMERANGE_IS_INDEFINITE(range)
```

## Parameters

`range`

The time range to be tested for finiteness.

## Return Value

`true` if `range` is indefinite; otherwise, `false`.

## Discussion

An indefinite time range has either an indefinite start or an indefinite duration, or both.

---

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