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Commit fa24f5f8 authored by Praetorius, Simon's avatar Praetorius, Simon
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FileWriter cleaned up

parent ce0fece2
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doc/Mainpage.md
View file @ fa24f5f8
......@@ -29,7 +29,7 @@ The corresponding weak form of the equation reads:
with \f$ u\in V_g \f$.
Thus, we need to define a grid (discretization of \f$ \Omega \f$) and a finite
element space (discretization of \f$ V_0 \f$ and \f$ V_g \f$). This needs to be
element space (discretization of \f$ V_0 \f$ and \f$ V_g \f$). This cab be
provided as `Traits` parameter in the ProblemStat class:
~~~~~~~~~~~~~~~{.cpp}
......@@ -37,7 +37,7 @@ using Grid = Dune::AlbertaGrid<AMDIS_DIM, AMDIS_DOW>;
using Traits = LagrangeBasis<Grid::LeafGridView, 1>;
~~~~~~~~~~~~~~~
This defines and `AlbertaGrid` as grid and a Lagrange Finite-Element space with
where `AlbertaGrid` defines a grid and `Traits` a Lagrange Finite-Element space with
local polynomial degree 1 on the elements.
All AMDiS programs start with initialization of the library, using `AMDiS::init`
......@@ -62,7 +62,7 @@ prob.initialize(INIT_ALL);
Operators specify the (bi-)linear-form and the coefficient function in the term,
see \ref operators for a list of possible types. The bilinear-form in the Poisson
equation consists of second-order term with coefficitn = 1 and the linear-form
equation consists of a second-order term with coefficient = 1 and the linear-form
includes the function \f$ f(x)=-1 \f$:
~~~~~~~~~~~~~~~{.cpp}
......@@ -74,8 +74,8 @@ prob.addVectorOperator(opF, 0);
~~~~~~~~~~~~~~~
Boundary conditions, in the example above a Dirichlet condition, is specified by
defining a predicate for the boundary \f$ \partial\Omega \f$ and the values on the
boundary \f$ g(x) = 0 \f$:
defining a predicate for the boundary \f$ \Gamma\subset\partial\Omega \f$ and the
values on the boundary \f$ g(x) = 0 \f$:
~~~~~~~~~~~~~~~{.cpp}
auto predicate = [](auto const& x){ return x[0] < 1.e-8 || x[1] < 1.e-8; };
......@@ -93,7 +93,7 @@ adapt.adapt(); // assemble and solve
Finally, finish the AMDiS program with `AMDiS::finish()`.
In complete program then reads:
The complete program then reads:
~~~~~~~~~~~~~~~{.cpp}
#include <dune/amdis/AMDiS.hpp>
#include <dune/amdis/AdaptInfo.hpp>
......
dune/amdis/FileWriter.hpp
View file @ fa24f5f8
......@@ -10,20 +10,48 @@
#include <dune/typetree/childextraction.hh>
#include <dune/amdis/Initfile.hpp>
#include <dune/amdis/common/Size.hpp>
#include <dune/amdis/common/ValueCategory.hpp>
#include <dune/amdis/gridfunctions/DOFVectorView.hpp>
#include <dune/amdis/io/FileWriterInterface.hpp>
#include <dune/amdis/utility/Filesystem.hpp>
namespace AMDiS
{
namespace Impl
{
template <class Tag> struct VTKFieldTypeImpl;
template <>
struct VTKFieldTypeImpl<tag::scalar> {
static const Dune::VTK::FieldInfo::Type value = Dune::VTK::FieldInfo::Type::scalar;
};
template <>
struct VTKFieldTypeImpl<tag::vector> {
static const Dune::VTK::FieldInfo::Type value = Dune::VTK::FieldInfo::Type::vector;
};
template <>
struct VTKFieldTypeImpl<tag::matrix> {
static const Dune::VTK::FieldInfo::Type value = Dune::VTK::FieldInfo::Type::tensor;
};
} // end namespace Impl
template <class Range>
constexpr Dune::VTK::FieldInfo::Type VTKFieldType = Impl::VTKFieldTypeImpl<ValueCategory_t<Range>>::value;
template <class Range>
constexpr std::size_t VTKFieldSize = Size<Range>;
template <class Traits, class TreePath>
class FileWriter
: public FileWriterInterface
{
private: // typedefs and static constants
using GlobalBasis = typename Traits::GlobalBasis;
using GridView = typename GlobalBasis::GridView;
using Vector = DOFVectorConstView<GlobalBasis,TreePath>;
using Range = typename Vector::Range;
/// Dimension of the mesh
static constexpr int dim = GridView::dimension;
......@@ -31,117 +59,57 @@ namespace AMDiS
/// Dimension of the world
static constexpr int dow = GridView::dimensionworld;
using Vector = DOFVector<GlobalBasis>;
public:
/// Constructor.
FileWriter(std::string baseName,
std::shared_ptr<GlobalBasis> const& basis,
TreePath const& tp,
std::shared_ptr<Vector> const& vector)
Vector const& dofvector)
: FileWriterInterface(baseName)
, basis_(basis)
, treePath_(tp)
, vector_(vector)
, dofvector_(dofvector)
{
//int subSampling = Parameters::get<int>(baseName + "->subsampling").value_or(0);
int m = Parameters::get<int>(baseName + "->ParaView mode").value_or(0);
mode_ = (m == 0 ? Dune::VTK::ascii : Dune::VTK::appendedraw);
//if (subSampling > 0)
// vtkWriter_ = std::make_shared<Dune::SubsamplingVTKWriter<GridView>>(basis_->gridView(), subSampling);
//else
vtkWriter_ = std::make_shared<Dune::VTKWriter<GridView>>(basis_->gridView());
int subSampling = Parameters::get<int>(baseName + "->subsampling").value_or(0);
vtkSeqWriter_ = std::make_shared<Dune::VTKSequenceWriter<GridView>>(vtkWriter_, filename_, dir_, "");
if (subSampling > 0)
vtkWriter_ = std::make_shared<Dune::SubsamplingVTKWriter<GridView>>(gridView(), subSampling);
else
vtkWriter_ = std::make_shared<Dune::VTKWriter<GridView>>(gridView());
mode_ = Parameters::get<int>(baseName + "->ParaView mode").value_or(0);
vtkSeqWriter_ = std::make_shared<Dune::VTKSequenceWriter<GridView>>(vtkWriter_, filename_, dir_, "");
vtkWriter_->addVertexData(dofvector_, Dune::VTK::FieldInfo(name_, VTKFieldType<Range>, VTKFieldSize<Range>));
}
/// Implements \ref FileWriterInterface::writeFiles
virtual void writeFiles(AdaptInfo& adaptInfo, bool force) override
{
using Tree = typename GlobalBasis::LocalView::Tree;
using Node = typename Dune::TypeTree::ChildForTreePath<Tree, TreePath>;
writeVertexData(typename Node::NodeTag{}, index_<Node::CHILDREN>, [&,this]()
{
if (mode_ == 0)
vtkSeqWriter_->write(adaptInfo.getTime(), Dune::VTK::ascii);
else if (mode_ == 1)
vtkSeqWriter_->write(adaptInfo.getTime(), Dune::VTK::appendedraw);
});
vtkSeqWriter_->write(adaptInfo.getTime(), mode_);
}
protected:
template <class W>
void writeVertexData(Dune::TypeTree::LeafNodeTag, index_t<0>, W write)
GridView const& gridView() const
{
using Dune::Functions::BasisBuilder::makeBasis;
using Dune::Functions::BasisBuilder::lagrange;
auto fct = makeDiscreteFunctionPtr(basis_,treePath_,vector_);
auto p1basis = makeBasis(basis_->gridView(), lagrange<1>());
auto data = makeDOFVector(p1basis, name_);
interpolate(p1basis, data, *fct);
auto dataFct = Dune::Functions::makeDiscreteGlobalBasisFunction<double>(p1basis,data);
vtkWriter_->addVertexData(dataFct, Dune::VTK::FieldInfo(name_, Dune::VTK::FieldInfo::Type::scalar, 1));
write();
vtkWriter_->clear();
}
template <std::size_t C, class W>
void writeVertexData(Dune::TypeTree::PowerNodeTag, index_t<C>, W write)
{
using Dune::Functions::BasisBuilder::makeBasis;
using Dune::Functions::BasisBuilder::lagrange;
using Dune::Functions::BasisBuilder::power;
using Dune::Functions::BasisBuilder::flatLexicographic;
assert( C == dow );
auto fct = makeDiscreteFunctionPtr(basis_,treePath_,vector_);
auto p1basis = makeBasis(basis_->gridView(), power<C>(lagrange<1>(), flatLexicographic()));
auto data = makeDOFVector(p1basis, name_);
interpolate(p1basis, data, *fct);
using Range = Dune::FieldVector<double,C>;
auto dataFct = Dune::Functions::makeDiscreteGlobalBasisFunction<Range>(p1basis,data);
vtkWriter_->addVertexData(dataFct, Dune::VTK::FieldInfo(name_, Dune::VTK::FieldInfo::Type::vector, C));
write();
vtkWriter_->clear();
return dofvector_.basis().gridView();
}
template <class NodeTag, std::size_t C, class W>
void writeVertexData(NodeTag, index_t<C>, W) {}
private:
std::shared_ptr<GlobalBasis> basis_;
TreePath treePath_;
std::shared_ptr<Vector> vector_;
Vector dofvector_;
std::shared_ptr<Dune::VTKWriter<GridView>> vtkWriter_;
std::shared_ptr<Dune::VTKSequenceWriter<GridView>> vtkSeqWriter_;
// std::vector<double> data_vector;
// represents VTK::OutputType: 0...ascii, 1...appendedraw
int mode_;
// represents VTK::OutputType: ascii, appendedraw
Dune::VTK::OutputType mode_;
};
template <class Traits, class GlobalBasis, class TreePath, class Vector>
template <class Traits, class GlobalBasis, class TreePath>
std::shared_ptr<FileWriter<Traits,TreePath>> makeFileWriterPtr(
std::string baseName,
std::shared_ptr<GlobalBasis> const& basis,
TreePath const& tp,
std::shared_ptr<Vector> const& vector)
DOFVectorConstView<GlobalBasis,TreePath> const& dofvector)
{
return std::make_shared<FileWriter<Traits,TreePath>>(baseName, basis, tp, vector);
return std::make_shared<FileWriter<Traits,TreePath>>(baseName, dofvector);
}
} // end namespace AMDiS
dune/amdis/GridFunctionOperator.hpp
View file @ fa24f5f8
......@@ -173,29 +173,42 @@ namespace AMDiS
: GridFunctionOperatorBase<GridFct, QuadratureCreator>(gridFct, 0, quadCreator)
{}
/// Assemble a local element vector on the element that is bound.
/// \brief Assemble a local element vector on the element that is bound.
/**
* \param contextGeometry Container for context related data
* \param quad A quadrature formula
* \param elementVector The output element vector
* \param node The node of the test-basis
**/
template <class Context, class QuadratureRule,
class ElementVector, class Node>
void calculateElementVector(Context const&, //< container for context related data
QuadratureRule const&, //< a quadrature formula
ElementVector&, //< the output element vector
Node const& //< the node of the test-basis
)
void calculateElementVector(Context const& contextGeometry,
QuadratureRule const& quad,
ElementVector& elementVector,
Node const& node)
{
error_exit("Needs to be implemented!");
}
/// Assemble a local element matrix on the element that is bound.
/// \brief Assemble a local element matrix on the element that is bound.
/**
* \param contextGeometry Container for context related data
* \param quad A quadrature formula
* \param elementMatrix The output element matrix
* \param rowNode The node of the test-basis
* \param colNode The node of the trial-basis
* \param flag1 finiteelement is the same for test and trial
* \param flag2 nodes are the same in the basis-tree
**/
template <class Context, class QuadratureRule,
class ElementMatrix, class RowNode, class ColNode, bool sameFE, bool sameNode>
void calculateElementMatrix(Context const&, //< container for context related data
QuadratureRule const&, //< a quadrature formula
ElementMatrix&, //< the output element matrix
RowNode const&, //< the node of the test-basis
ColNode const&, //< the node of the trial-basis
std::integral_constant<bool, sameFE>, //< finiteelement is the same for test and trial
std::integral_constant<bool, sameNode> //< nodes are the same in the basis-tree
)
void calculateElementMatrix(Context const& contextGeometry,
QuadratureRule const& quad,
ElementMatrix& elementMatrix,
RowNode const& rowNode,
ColNode const& colNode,
std::integral_constant<bool, sameFE> flag1,
std::integral_constant<bool, sameNode> flag2)
{
error_exit("Needs to be implemented!");
}
......@@ -261,28 +274,28 @@ namespace AMDiS
/// Store tag and expression to create a \ref GridFunctionOperator
template <class Tag, class Expr>
auto makeOperator(Tag t, Expr const& expr)
auto makeOperator(Tag tag, Expr const& expr)
{
using RawExpr = Underlying_t<Expr>;
static_assert(Concepts::HasGridFunctionOrder<RawExpr>,
"Polynomial degree of expression can not be deduced. You need to provide an explicit value for polynomial order or a quadrature rule in `makeOperator()`.");
return ExpressionPreOperator<Tag, Expr, tag::deduce>{t, expr};
return ExpressionPreOperator<Tag, Expr, tag::deduce>{tag, expr};
}
/// Store tag and expression and polynomial order of expression to create a \ref GridFunctionOperator
template <class Tag, class Expr>
auto makeOperator(Tag t, Expr const& expr, int order,
auto makeOperator(Tag tag, Expr const& expr, int order,
Dune::QuadratureType::Enum qt = Dune::QuadratureType::GaussLegendre)
{
return ExpressionPreOperator<Tag, Expr, tag::order>{t, expr, order, qt};
return ExpressionPreOperator<Tag, Expr, tag::order>{tag, expr, order, qt};
}
/// Store tag and expression and a quadrature rule to create a \ref GridFunctionOperator
template <class Tag, class Expr, class ctype, int dim>
auto makeOperator(Tag t, Expr const& expr, Dune::QuadratureRule<ctype,dim> const& rule)
auto makeOperator(Tag tag, Expr const& expr, Dune::QuadratureRule<ctype,dim> const& rule)
{
return ExpressionPreOperator<Tag, Expr, tag::rule, Dune::QuadratureRule<ctype,dim>>{t, expr, rule};
return ExpressionPreOperator<Tag, Expr, tag::rule, Dune::QuadratureRule<ctype,dim>>{tag, expr, rule};
}
/** @} **/
......
dune/amdis/Operators.hpp
View file @ fa24f5f8
......@@ -20,17 +20,17 @@
* \brief Defines operators to be assembled in the matrix/vector
*
* An `Operator` is a class providing methods necessary for assembling:
* - `void bind(Element, Geometry)` and `void unbind()` for binding an unbinding the
* - `bind(Element, Geometry)` and `unbind()` for binding an unbinding the
* element to (from) an GridView entity of codim 0. Additionally the Geometry
* object of the element is provided.
* - `Dune::QuadratureRule<ctype,dim> getQuadratureRule(Nodes...)` factory for the
* - `getQuadratureRule(Nodes...)` factory for the
* quadrature rules used in assembling the operator on the element. `Nodes...`
* is either `{RowNode, ColNode}` for Matrix-Operators or `{Node}` for a
* Vector-Operator.
* - `void calculateElementVector(ContextGeometry, QuadratureRule, ElementVector, Node)`
* - `calculateElementVector(ContextGeometry, QuadratureRule, ElementVector, Node)`
* where the `ContextGeometry` provides a reference to the ElementGeometry and
* geometry of the LocalContext (that can be different), *or*
* - `void calculateElementMatrix(ContextGeometry, QuadratureRule, ElementMatrix, RowNode, ColNode, Flags...)`
* - `calculateElementMatrix(ContextGeometry, QuadratureRule, ElementMatrix, RowNode, ColNode, Flags...)`
* Same as for `calculateElementVector` but additionally two optimization flags
* are provided as `bool_t<...>` type:
* + `sameFE`: the FiniteElementSpace of `RowNode` and `ColNode` are the same.
......
dune/amdis/ProblemStat.inc.hpp
View file @ fa24f5f8
......@@ -122,8 +122,8 @@ void ProblemStat<Traits>::createFileWriter()
if (!Parameters::get<std::string>(componentName + "->filename"))
return;
auto writer = makeFileWriterPtr<Traits>(componentName, globalBasis, treePath, solution);
filewriter.push_back(writer);
auto writer = makeFileWriterPtr<Traits>(componentName, this->getSolution(treePath));
filewriter.push_back(std::move(writer));
});
}
......
dune/amdis/common/FieldMatVec.hpp
View file @ fa24f5f8
......@@ -13,45 +13,48 @@
namespace AMDiS
{
// some arithmetic operations with Dune::FieldVector
using Dune::FieldVector;
using Dune::FieldMatrix;
// some arithmetic operations with FieldVector
template <class T, int N, class S,
REQUIRES(Concepts::Arithmetic<S>) >
Dune::FieldVector<T,N> operator*(Dune::FieldVector<T,N> v, S factor)
FieldVector<T,N> operator*(FieldVector<T,N> v, S factor)
{
return v *= factor;
}
template <class S, class T, int N,
REQUIRES(Concepts::Arithmetic<S>) >
Dune::FieldVector<T,N> operator*(S factor, Dune::FieldVector<T,N> v)
FieldVector<T,N> operator*(S factor, FieldVector<T,N> v)
{
return v *= factor;
}
template <class T, int N, class S,
REQUIRES(Concepts::Arithmetic<S>) >
Dune::FieldVector<T,N> operator/(Dune::FieldVector<T,N> v, S factor)
FieldVector<T,N> operator/(FieldVector<T,N> v, S factor)
{
return v /= factor;
}
// some arithmetic operations with Dune::FieldMatrix
// some arithmetic operations with FieldMatrix
template <class T, int N, int M>
Dune::FieldMatrix<T,N,M> operator+(Dune::FieldMatrix<T,N,M> A, Dune::FieldMatrix<T,N,M> const& B)
FieldMatrix<T,N,M> operator+(FieldMatrix<T,N,M> A, FieldMatrix<T,N,M> const& B)
{
return A += B;
}
template <class T, int N, int M>
Dune::FieldMatrix<T,N,M> operator-(Dune::FieldMatrix<T,N,M> A, Dune::FieldMatrix<T,N,M> const& B)
FieldMatrix<T,N,M> operator-(FieldMatrix<T,N,M> A, FieldMatrix<T,N,M> const& B)
{
return A -= B;
}
template <class T, int N, int M>
Dune::FieldVector<T,N> operator*(Dune::FieldMatrix<T,N,M> const& mat, Dune::FieldVector<T,M> const& vec)
FieldVector<T,N> operator*(FieldMatrix<T,N,M> const& mat, FieldVector<T,M> const& vec)
{
return Dune::FMatrixHelp::mult(mat, vec);
}
......@@ -60,14 +63,14 @@ namespace AMDiS
/// Cross-product a 2d-vector = orthogonal vector
template <class T>
Dune::FieldVector<T, 2> cross(Dune::FieldVector<T, 2> const& a)
FieldVector<T, 2> cross(FieldVector<T, 2> const& a)
{
return {{ a[1], -a[0] }};
}
/// Cross-product of two vectors (in 3d only)
template <class T>
Dune::FieldVector<T, 3> cross(Dune::FieldVector<T, 3> const& a, Dune::FieldVector<T, 3> const& b)
FieldVector<T, 3> cross(FieldVector<T, 3> const& a, FieldVector<T, 3> const& b)
{
return {{ a[1]*b[2] - a[2]*b[1],
a[2]*b[0] - a[0]*b[2],
......@@ -76,7 +79,7 @@ namespace AMDiS
/// Dot product (vec1^T * vec2)
template <class T, class S, int N>
auto dot(Dune::FieldVector<T,N> const& vec1, Dune::FieldVector<S,N> const& vec2)
auto dot(FieldVector<T,N> const& vec1, FieldVector<S,N> const& vec2)
{
return vec1.dot(vec2);
}
......@@ -86,7 +89,7 @@ namespace AMDiS
namespace Impl
{
template <class T, int N, class Operation>
T accumulate(Dune::FieldVector<T, N> const& x, Operation op)
T accumulate(FieldVector<T, N> const& x, Operation op)
{
T result = 0;
for (int i = 0; i < N; ++i)
......@@ -98,7 +101,7 @@ namespace AMDiS
/// Sum of vector entires.
template <class T, int N>
T sum(Dune::FieldVector<T, N> const& x)
T sum(FieldVector<T, N> const& x)
{
return Impl::accumulate(x, Operation::Plus{});
}
......@@ -106,7 +109,7 @@ namespace AMDiS
/// Dot-product with the vector itself
template <class T, int N>
auto unary_dot(Dune::FieldVector<T, N> const& x)
auto unary_dot(FieldVector<T, N> const& x)
{
auto op = [](auto const& a, auto const& b) { return a + Math::sqr(std::abs(b)); };
return Impl::accumulate(x, op);
......@@ -114,28 +117,28 @@ namespace AMDiS
/// Maximum over all vector entries
template <class T, int N>
auto max(Dune::FieldVector<T, N> const& x)
auto max(FieldVector<T, N> const& x)
{
return Impl::accumulate(x, Operation::Max{});
}
/// Minimum over all vector entries
template <class T, int N>
auto min(Dune::FieldVector<T, N> const& x)
auto min(FieldVector<T, N> const& x)
{
return Impl::accumulate(x, Operation::Min{});
}
/// Maximum of the absolute values of vector entries
template <class T, int N>
auto abs_max(Dune::FieldVector<T, N> const& x)
auto abs_max(FieldVector<T, N> const& x)
{
return Impl::accumulate(x, Operation::AbsMax{});
}
/// Minimum of the absolute values of vector entries
template <class T, int N>
auto abs_min(Dune::FieldVector<T, N> const& x)
auto abs_min(FieldVector<T, N> const& x)
{
return Impl::accumulate(x, Operation::AbsMin{});
}
......@@ -146,7 +149,7 @@ namespace AMDiS
* \brief The 1-norm of a vector = sum_i |x_i|
**/
template <class T, int N>
auto one_norm(Dune::FieldVector<T, N> const& x)
auto one_norm(FieldVector<T, N> const& x)
{
auto op = [](auto const& a, auto const& b) { return a + std::abs(b); };
return Impl::accumulate(x, op);
......@@ -156,7 +159,7 @@ namespace AMDiS
* \brief The euklidean 2-norm of a vector = sqrt( sum_i |x_i|^2 )
**/
template <class T, int N>
auto two_norm(Dune::FieldVector<T, N> const& x)
auto two_norm(FieldVector<T, N> const& x)
{
return std::sqrt(unary_dot(x));
}
......@@ -165,7 +168,7 @@ namespace AMDiS
* \brief The p-norm of a vector = ( sum_i |x_i|^p )^(1/p)
**/
template <int p, class T, int N>
auto p_norm(Dune::FieldVector<T, N> const& x)
auto p_norm(FieldVector<T, N> const& x)
{
auto op = [](auto const& a, auto const& b) { return a + Math::pow<p>(std::abs(b)); };
return std::pow( Impl::accumulate(x, op), 1.0/p );
......@@ -175,7 +178,7 @@ namespace AMDiS
* \brief The infty-norm of a vector = max_i |x_i| = alias for \ref abs_max
**/
template <class T, int N>
auto infty_norm(Dune::FieldVector<T, N> const& x)
auto infty_norm(FieldVector<T, N> const& x)
{
return abs_max(x);
}
......@@ -184,7 +187,7 @@ namespace AMDiS
/// The euklidean distance between two vectors = |lhs-rhs|_2
template <class T, int N>
T distance(Dune::FieldVector<T, N> const& lhs, Dune::FieldVector<T, N> const& rhs)
T distance(FieldVector<T, N> const& lhs, FieldVector<T, N> const& rhs)
{
T result = 0;
for (int i = 0; i < N; ++i)
......@@ -196,9 +199,9 @@ namespace AMDiS
/// Outer product (vec1 * vec2^T)
template <class T, class S, int N, int M, int K>
auto outer(Dune::FieldMatrix<T,N,K> const& vec1, Dune::FieldMatrix<S,M,K> const& vec2)
auto outer(FieldMatrix<T,N,K> const& vec1, FieldMatrix<S,M,K> const& vec2)
{
using result_type = Dune::FieldMatrix<decltype( std::declval<T>() * std::declval<S>() ), N, M>;
using result_type = FieldMatrix<decltype( std::declval<T>() * std::declval<S>() ), N, M>;
result_type mat;
for (int i = 0; i < N; ++i)
for (int j = 0; j < M; ++j)
......@@ -209,28 +212,28 @@ namespace AMDiS
// ----------------------------------------------------------------------------
template <class T>
T det(Dune::FieldMatrix<T, 0, 0> const& /*mat*/)
T det(FieldMatrix<T, 0, 0> const& /*mat*/)
{
return 0;
}
/// Determinant of a 1x1 matrix
template <class T>
T det(Dune::FieldMatrix<T, 1, 1> const& mat)
T det(FieldMatrix<T, 1, 1> const& mat)
{
return mat[0][0];
}
/// Determinant of a 2x2 matrix
template <class T>
T det(Dune::FieldMatrix<T, 2, 2> const& mat)
T det(FieldMatrix<T, 2, 2> const& mat)
{
return mat[0][0]*mat[1][1] - mat[0][1]*mat[1][0];
}
/// Determinant of a 3x3 matrix
template <class T>
T det(Dune::FieldMatrix<T, 3, 3> const& mat)
T det(FieldMatrix<T, 3, 3> const& mat)
{
return mat[0][0]*mat[1][1]*mat[2][2] + mat[0][1]*mat[1][2]*mat[2][0] + mat[0][2]*mat[1][0]*mat[2][1]
- (mat[0][2]*mat[1][1]*mat[2][0] + mat[0][1]*mat[1][0]*mat[2][2] + mat[0][0]*mat[1][2]*mat[2][1]);
......@@ -238,14 +241,14 @@ namespace AMDiS
/// Determinant of a NxN matrix
template <class T, int N>
T det(Dune::FieldMatrix<T, N, N> const& mat)
T det(FieldMatrix<T, N, N> const& mat)
{
return mat.determinant();