示例#1
0
文件: cd_372_E.cpp 项目: liuq901/code
inline point inverse(const point &p)
{
    return(p/p.len2());
}
bool anglecmp(point a, point b)
{
    return make_pair(vp(a,b),a.len2()) < make_pair(0,b.len2());
}