# `GSMultiplicator`

*Function*

## Declaration

```swift
func GSMultiplicator(_ a: NSPoint, _ b: NSPoint, _ c: NSPoint) -> CGFloat
```

```objc
CGFloat GSMultiplicator(NSPoint a, NSPoint b, NSPoint c);
```

```python
GSMultiplicator(a: NSPoint, b: NSPoint, c: NSPoint) -> float
```

## See Also

### Formats and Grid Settings

- [`GSFileExtensionForOutlineFormat`](/Core/GlyphsCore/GSFileExtensionForOutlineFormat) — The file extension conventionally used for an outline format.
- [`GSNameForOutlineFormat`](/Core/GlyphsCore/GSNameForOutlineFormat) — The font format identifier corresponding to an outline format.
- [`GSIsMeaningfulGrid`](/Core/GlyphsCore/GSIsMeaningfulGrid) — Whether the grid enables coordinate rounding.
- [`GSIsUnitGridOrMore`](/Core/GlyphsCore/GSIsUnitGridOrMore) — Whether either effective grid interval is at least one unit.
- [`GSMakeGridSetting`](/Core/GlyphsCore/GSMakeGridSetting) — Grid settings with the same effective interval in both directions.