w_approx          421 old_code/tumor_growth/tumor_code.h   DiscreteFunctionType w_approx {"w_approx", dfSpace};	// Approximaion to u_n
w_approx          476 old_code/tumor_growth/tumor_code.h   const Tumor_Brusselator_operator u_operator {u_model, u_approx, w_approx};
w_approx          524 old_code/tumor_growth/tumor_code.h   w_approx.assign(w_n);
w_approx          555 old_code/tumor_growth/tumor_code.h     w_approx.assign(w_n);