53         Float2 res = new Float2();  in add()  local
54         res.x = a.x + b.x;  in add()
55         res.y = a.y + b.y;  in add()
57         return res;  in add()
88         Float2 res = new Float2();  in add()  local
89         res.x = a.x + b;  in add()
90         res.y = a.y + b;  in add()
92         return res;  in add()
113         Float2 res = new Float2();  in sub()  local
114         res.x = a.x - b.x;  in sub()
115         res.y = a.y - b.y;  in sub()
117         return res;  in sub()
138         Float2 res = new Float2();  in sub()  local
139         res.x = a.x - b;  in sub()
140         res.y = a.y - b;  in sub()
142         return res;  in sub()
163         Float2 res = new Float2();  in mul()  local
164         res.x = a.x * b.x;  in mul()
165         res.y = a.y * b.y;  in mul()
167         return res;  in mul()
188         Float2 res = new Float2();  in mul()  local
189         res.x = a.x * b;  in mul()
190         res.y = a.y * b;  in mul()
192         return res;  in mul()
213         Float2 res = new Float2();  in div()  local
214         res.x = a.x / b.x;  in div()
215         res.y = a.y / b.y;  in div()
217         return res;  in div()
238         Float2 res = new Float2();  in div()  local
239         res.x = a.x / b;  in div()
240         res.y = a.y / b;  in div()
242         return res;  in div()