说明：  最新收集得老外写的一个矩阵类，功能相当的强大，比以前的源码水平提高了不少，源码中有相当详细的英文注释，简单明了！
(collected in the latest foreigner to write a matrix of type, quite powerful, the source than the level a lot, a significant source of detailed notes in English, simple!)