说明：  样条曲线的算法C++代码实现，包含三个文件spline.cpp/spline.h/spline_prb.cpp，其中sline_prb为测试程序。此库中包含常见的多项式样条、hemitt样条、B样条等八种样条算法。devc++/vc/gcc下均通过
(Spline curve algorithm C++ Code, including the three documents spline.cpp/spline.h/spline_prb.cpp, which sline_prb for the test procedure. This library contains the common polynomial spline, hemitt spline, B-spline, such as eight-spline algorithm. devc++/vc/gcc adopted under)