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# CMTimeRoundingMethod

An enumeration of rounding methods to use when performing time calculations.

```
enum CMTimeRoundingMethod
```

## Topics

### Default Rounding Method

[`default`](/documentation/CoreMedia/CMTimeRoundingMethod/default)

The default rounding method.

### Rounding Methods

[`CMTimeRoundingMethod.roundHalfAwayFromZero`](/documentation/CoreMedia/CMTimeRoundingMethod/roundHalfAwayFromZero)

Rounds half away from zero.

[`CMTimeRoundingMethod.roundAwayFromZero`](/documentation/CoreMedia/CMTimeRoundingMethod/roundAwayFromZero)

Rounds away from zero.

[`CMTimeRoundingMethod.roundTowardZero`](/documentation/CoreMedia/CMTimeRoundingMethod/roundTowardZero)

Rounds toward zero.

[`CMTimeRoundingMethod.quickTime`](/documentation/CoreMedia/CMTimeRoundingMethod/quickTime)

Rounds using the QuickTime method.

[`CMTimeRoundingMethod.roundTowardPositiveInfinity`](/documentation/CoreMedia/CMTimeRoundingMethod/roundTowardPositiveInfinity)

Rounds toward positive infinity.

[`CMTimeRoundingMethod.roundTowardNegativeInfinity`](/documentation/CoreMedia/CMTimeRoundingMethod/roundTowardNegativeInfinity)

Rounds toward negative infinity.


---

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