Mariia,
That's a problem a little more complicated to solve. Basically, we are not
instantiating the template for complex<double> and BlockSparseMatrix.
If you are OK with recompiling deal.II, you should modify source/numerics/
matrix_tools.inst.in so that all overloads are also compiled for complex
numbers.
Otherwise, copy
https://github.com/dealii/dealii/blob/7439f2b0b4d210d237e8df53f12f47c242cfac3f/source/numerics/matrix_tools.cc#L240-L499
somewhere in your source code.
Best,
Daniel
Am Mi., 15. Sept. 2021 um 09:10 Uhr schrieb Мария Бронзова <
masianic...@gmail.com>:
> Dear Daniel,
>
> Thank you a lot for the hint, it makes perfect sense! I also correctted the*
> interpolate_boundary_values* call as follows:
>
>
>
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>
>
>
> *template <int dim> class DirichletBoundaryValues : public Function<dim,
> std::complex<double>> { public: DirichletBoundaryValues() :
> Function<dim, std::complex<double>>(1) {} virtual
> std::complex<double> value(const Point<dim> &p, const unsigned int
> component = 1) const override; }; template <int dim>
> std::complex<double> DirichletBoundaryValues<dim>::value(const Point<dim> &
> p, const unsigned int /*component*/) const { const
> std::complex<double> i = {0,1}; return i; }*
>
>
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>
> * FEValuesExtractors::Scalar pressures(dim);
> std::map<types::global_dof_index, std::complex<double>> boundary_values;
> VectorTools::interpolate_boundary_values(dof_handler, 1,
> DirichletBoundaryValues<dim>(), boundary_values,
> fe.component_mask(pressures));
> MatrixTools::apply_boundary_values(boundary_values, system_matrix,
> solution, system_rhs);*
>
> And now getting the following error:
> undefined reference to 'void
> dealii::MatrixTools::apply_boundary_values<std::complex<double>
> >(std::map<unsigned int, std::complex<double>, std::less<unsigned int>,
> std::allocator<std::pair<unsigned int const, std::complex<double> > > >
> const&, dealii::BlockSparseMatrix<std::complex<double> >&,
> dealii::BlockVector<std::complex<double> >&,
> dealii::BlockVector<std::complex<double> >&, bool)'
>
> I am a bit lost, what it could be connected to. Would appreciate any hints!
>
> Thank you a lot for your time!
>
> Kind regards,
> Mariia Bronzova
>
> вторник, 14 сентября 2021 г. в 16:33:44 UTC+2, d.arnd...@gmail.com:
>
>> Mariia,
>>
>> You need to make sure that the std::map also uses values of type
>> std::complex<double>. The compile error you shared shows that you use
>> doubles.
>>
>> Best,
>> Daniel
>>
>> Am Di., 14. Sept. 2021 um 07:30 Uhr schrieb Мария Бронзова <
>> masia...@gmail.com>:
>>
>>> Hi everyone,
>>>
>>> I ran into the following difficulty: I have a vector-valued problem with
>>> complex numbers as entries for my BlockSparseMatrix system_matrix and
>>> BlockVector system_rhs and solution vectors and I am trying to apply
>>> Dirichlet boundary conditions, using the
>>> MatrixTools::apply_boundary_values(boundary_values, system_matrix,
>>> solution, system_rhs) function.
>>>
>>> The compiler is complaining, indicating the error: no matching function
>>> for call to ‘apply_boundary_values(std::map<unsigned int, double>&,
>>> dealii::BlockSparseMatrix<std::complex<double> >&,
>>> dealii::BlockVector<std::complex<double> >&,
>>> dealii::BlockVector<std::complex<double> >&)’.
>>>
>>> Is it not possible to use the function for complex-values systems?
>>>
>>> Thank you!
>>>
>>> Kind regards,
>>> Mariia
>>>
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