#include <boost/math/special_functions/next.hpp> // For float_distance.
#include <tuple> // for std::tuple and std::make_tuple.
#include <boost/math/special_functions/cbrt.hpp> // For boost::math::cbrt.
+#include <boost/math/special_functions/pow.hpp> // boost::math::pow<5,double>
//] [/root_finding_include_1]