问不能和亚当斯-巴什福斯-莫尔顿合作

EN

#include <iostream>
#include <boost/array.hpp>
#include <boost/numeric/odeint.hpp>
#include <boost/version.hpp>


typedef boost::array<long double, 2> state_type;
using namespace boost::numeric::odeint;

class Boost_odeint_rhs{
    public:
        Boost_odeint_rhs(){
        }

        void operator() (const state_type &x, state_type &dxdt, const double t)
        {
            dxdt[0] = 1;
            dxdt[1] = 2;
        }
};


int main() {

    std::cout << "using boost "
              << BOOST_VERSION / 100000 << "."
              << BOOST_VERSION / 100 % 1000 << "."
              << BOOST_VERSION % 100 << std::endl;

    std::cout << "integrating vector [1,2] over (0,1)" << std::endl;

    Boost_odeint_rhs rhs;
    state_type Bint;
    Bint[0] = 0.0;
    Bint[1] = 0.0;

    adams_bashforth_moulton< 2 , state_type > stepper;
    //bulirsch_stoer< state_type > stepper( 1e-5 , 0.0 , 0.0 , 1.0 );

    integrate_adaptive( stepper , rhs , Bint , 0.0 , 1.0 , 1e-3 );

    std::cout << "returned integral = " << Bint[0] << " "<< Bint[1] << std::endl;
}