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[Aomandeyi <>]

I still couldn't understand the official explanations,the two sets of data is
exactly the  same ,
 why the results is different? can someone talk about his own understanding?
the codes as follow
-------------------------------------------------------

--------------------------------------------------------------------------------

#include <iostream>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <sstream>
typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel;
typedef Kernel::Point_2 Point_2;
int main()
{
        Point_2 p(0, 0.3), q(1, 0.6), r(2, 0.9);
        {
                std::cout << (CGAL::collinear(p, q, r) ? "collinear\n" : "not
collinear\n");
        }
        
 {
                std::istringstream input("0 0.3   1 0.6   2 0.9");
                input >> p >> q >> r;
                std::cout << (CGAL::collinear(p, q, r) ? "collinear\n" : "not
collinear\n");
        }
        
        return 0;
}
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