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# CMTIME_IS_NUMERIC

Returns a Boolean value that indicates whether a time is numeric.

```
#define CMTIME_IS_NUMERIC(time)
```

## Return Value

<doc://com.apple.documentation/documentation/Swift/true> if the time is numeric; otherwise, <doc://com.apple.documentation/documentation/Swift/false>.

## Discussion

A numeric time contains a usable [`value`](/documentation/CoreMedia/CMTime/value), [`timescale`](/documentation/CoreMedia/CMTime/timescale), and [`epoch`](/documentation/CoreMedia/CMTime/epoch).

---

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