18 lines
367 B
C++
18 lines
367 B
C++
|
#include "mfem.hpp"
|
||
|
|
#include <cmath>
|
||
|
|
|
||
|
|
#include "coeff.h"
|
||
|
|
|
||
|
|
double xi_coeff_func(const mfem::Vector &x) {
|
||
|
|
return std::pow(x(0), 2);
|
||
|
|
}
|
||
|
|
|
||
|
|
void vec_xi_coeff_func(const mfem::Vector &x, mfem::Vector &v) {
|
||
|
|
v.SetSize(1);
|
||
|
|
v[0] = -std::pow(x(0), 2);
|
||
|
|
}
|
||
|
|
|
||
|
|
double theta_initial_guess(const mfem::Vector &x, double root) {
|
||
|
|
double xi = x[0];
|
||
|
|
return 1-std::pow(xi/root, 2);
|
||
|
|
}
|