# `GSNormalizeAngleRAD`

*Function*

Returns a value in the interval [0, 2π).

## Declaration

```objc
static CGFloat GSNormalizeAngleRAD(CGFloat angle);
```

```python
GSNormalizeAngleRAD(angle: float) -> float
```

## See Also

### Angles and Slopes

- [`GSNormalizeAngleDEG`](/Core/GlyphsCore/GSNormalizeAngleDEG) — Returns a value in the interval [0, 360).
- [`GSNormalizeAngleDirection`](/Core/GlyphsCore/GSNormalizeAngleDirection) — Returns a version of the angle that matches the given direction.
- [`GSSlope`](/Core/GlyphsCore/GSSlope)