c++ - How can I use a function as argument to a member function? -

i trying use member function sover::tov argument function using std::bind. compile error @ calling std::bind. briefly, essence of code following. wrong syntax or there better way want?

class solver {    private:       ....    public:     ....        double solve(vector< vector<double> > & sol, const double &z, const double &n)          {...             method(std::bind(&solver::tov, *this, pl::_1 , pl::_2 , pl::_3 ),y,x,dx)          ...}         void tov ( const vector<double> &y, vector<double> &dy, const double &x ) {...}    };      void method(void (*i_function)(const vector< double > &, vector<double> &, const double &), vector< double > &y, const double &x, const double &h) {...} 

let me give concrete example reproduces main problem:

void method(void (*i_function)(double &), double &y) { i_function(y); }   class solver {      public:           solver() {}          void solve(double &y) {    method(do_calc,y); }          void do_calc(double &x)    { x += 1; }  };   int main()   {     double y = 1;     solver().solve(y);     std::cout << y << std::endl;  } 

which gives error: error: cannot convert ‘solver::do_calc’ type ‘void (solver::)(double&)’ type ‘void (*)(double&)’ void solve(double &y) { method(do_calc,y); }

even if use

 void method(std::function<void(double &)> i_function, double &y) { i_function(y); } 

it doesn't work.