Math rounding
- math.ceil — Ceiling (round up)
- math.floor — Floor (round down)
- math.round — Round to nearest, ties away from zero
- math.roundeven — Round to nearest, ties to even
- math.roundhalfdown — Round to nearest, ties to -∞
- math.roundhalfup — Round to nearest, ties to +∞
- math.trunc — Truncate (round towards zero)
