root/applications/pmsm/testbidiff.cpp

#include <base/bdmbase.h>

#include "pmsm.h"

using namespace bdm;

//These lines are needed for use of cout and endl
using std::cout;
using std::endl;

int main()
{
        vec x0 = "1 2 10 0";
        vec u0 = "1 1";
        double h=1e-6;
        
        IMpmsmDQ I;
        I.set_parameters ( 0.28, 0.003465, 0.003, h, 0.1989,   1.5 ,4.0, 0.04, 0.0 );
        
        vec x(x0);      x(0) += h;
        cout << I.eval(x,u0) << ", " << I.eval(x0,u0) <<endl<<endl;
        
        cout << (I.eval(x,u0)-I.eval(x0,u0))/h <<endl;
        x=x0;   x(1) += h;
        cout << (I.eval(x,u0)-I.eval(x0,u0))/h <<endl;
        x=x0;   x(2) += h;
        cout << (I.eval(x,u0)-I.eval(x0,u0))/h <<endl;
        x=x0;   x(3) += h;
        cout << (I.eval(x,u0)-I.eval(x0,u0))/h <<endl;
        cout << endl;
        mat A(4,4);
        I.dfdx_cond(x0,u0,A);
        
        cout <<A.T() << endl;
        //Exit program:
        return 0;

}