一个j2me的游戏的实现.需要添加一个mathfp类来支持浮点数.-a j2me the realization of the game. Mathfp need to add a category to support the float.

很多时候都能用到的，主要解决CLDC1.0中不支持浮点数的问题，做J2ME开发的朋友应该用得到。-A lot of moment are could not CLDC1.0, mainly to solve the problem, support floating-point J2ME development friends should do with get.