Method DiffJacobi

fem/coefficient.cpp:4535–4554

  }  

  shared_ptr<CoefficientFunction> DiffJacobi (const CoefficientFunction * var, T_DJC & cache) const override
  {
    auto thisptr = const_pointer_cast<CoefficientFunction>(this->shared_from_this());
    if (cache.find(thisptr) != cache.end())
      return cache[thisptr];
    
    if (this == var) return make_shared<ConstantCoefficientFunction>(1);
    auto diffc1 = c1->DiffJacobi (var, cache);
    Array<int> vardims = Array<int> (var->Dimensions());
    Array<int> dist(vardims.Size());
    int prod = 1;
    for (int i = dist.Size()-1; i >= 0; i--)
      {
        dist[i] = prod;
        prod *= vardims[i];
      }
    auto res = MakeSubTensorCoefficientFunction(diffc1, comp*var->Dimension(), std::move(vardims), std::move(dist));
    cache[thisptr] = res;
    return res;
  }  
  
  
  /*