Function float2

tests/TestConversions.cpp:6–8

"class float2\r\n\
{\r\n\
float x, y;\r\n\
}\r\n\
float2 float2(float x, y){ float2 ret; ret.x = x; ret.y = y; return ret; }\r\n\
\r\n\
float2 operator+(float2 ref a, float2 ref b){ return float2(a.x+b.x, a.y+b.y); }\r\n\
float2 ref operator+=(float2 ref a, float2 ref b){ a.x += b.x; a.y += b.y; return a; }\r\n\