Method Diff

fem/coefficient.cpp:3159–3164

  }

  shared_ptr<CoefficientFunction> Diff (const CoefficientFunction * var,
                                        shared_ptr<CoefficientFunction> dir) const override
  {
    if (var == this) return dir;
    return make_shared<ConstantCoefficientFunction>(1.0)/NormCF(c1) * InnerProduct(c1,c1->Diff(var,dir));
  }


  shared_ptr<CoefficientFunction> DiffJacobi (const CoefficientFunction * var, T_DJC & cache) const override