Function successor

successor(c: number): number
Returns the smallest representable ChordAngle larger than this one. This can be used to convert a "<" comparison to a "<=" comparison.

Note the following special cases:
```
NegativeChordAngle.Successor == 0
StraightChordAngle.Successor == InfChordAngle
InfChordAngle.Successor == InfChordAngle
```
Parameters
- c: number
Returns number
- Defined in work/s2js/s2js/s1/chordangle.ts:150