48         Float2 res = new Float2();  in add()  local
49         res.x = a.x + b.x;  in add()
50         res.y = a.y + b.y;  in add()
52         return res;  in add()
83         Float2 res = new Float2();  in add()  local
84         res.x = a.x + b;  in add()
85         res.y = a.y + b;  in add()
87         return res;  in add()
108         Float2 res = new Float2();  in sub()  local
109         res.x = a.x - b.x;  in sub()
110         res.y = a.y - b.y;  in sub()
112         return res;  in sub()
133         Float2 res = new Float2();  in sub()  local
134         res.x = a.x - b;  in sub()
135         res.y = a.y - b;  in sub()
137         return res;  in sub()
158         Float2 res = new Float2();  in mul()  local
159         res.x = a.x * b.x;  in mul()
160         res.y = a.y * b.y;  in mul()
162         return res;  in mul()
183         Float2 res = new Float2();  in mul()  local
184         res.x = a.x * b;  in mul()
185         res.y = a.y * b;  in mul()
187         return res;  in mul()
208         Float2 res = new Float2();  in div()  local
209         res.x = a.x / b.x;  in div()
210         res.y = a.y / b.y;  in div()
212         return res;  in div()
233         Float2 res = new Float2();  in div()  local
234         res.x = a.x / b;  in div()
235         res.y = a.y / b;  in div()
237         return res;  in div()