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	 c9092a1e6a
			
		
	
	c9092a1e6a
	
	
	
		
			
			Migration to the new API can be achieved with this rsc.io/rf script:
```
rf ex {
	import "gonum.org/v1/gonum/spatial/r2";
	var p,q r2.Vec;
	var f float64;
	p.Add(q) -> r2.Add(p, q);
	p.Sub(q) -> r2.Sub(p, q);
	p.Scale(f) -> r2.Scale(f, p);
	p.Dot(q) -> r2.Dot(p, q);
	p.Cross(q) -> r2.Cross(p, q);
	p.Rotate(f, q) -> r2.Rotate(p, f, q);
}
```
Updates gonum/gonum#1553.