px %= (short)sx;
00C606E9  fld         dword ptr [sx] 
00C606EF  call        @ILT+139650(__ftol2) (8B5187h) 
00C606F4  movsx       ecx,ax 
00C606F7  mov         eax,dword ptr [px] 
00C606FD  cdq              
00C606FE  idiv        eax,ecx 
00C60700  mov         dword ptr [px],edx 
			py %= (short)sy;