26 #include <mln/literal/grays.hh>
27 #include <mln/value/graylevel.hh>
28 #include <mln/value/gl8.hh>
29 #include <mln/value/gl16.hh>
45 std::cout << int(a.value()) << std::endl;
48 std::cout << int(b.value()) << std::endl;
51 std::cout << int(b.value()) << std::endl;