devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Big rewrite in the Sparse module: SparseMatrixBase no longer inherits MatrixBase.

Browse Source 
That means a lot of features which were available for sparse matrices
via the dense (and super slow) implemention are no longer available.
All features which make sense for sparse matrices (aka can be implemented efficiently) will be
implemented soon, but don't expect to see an API as rich as for the dense path.
Other changes:
* no block(), row(), col() anymore.
* instead use .innerVector() to get a col or row vector of a matrix.
* .segment(), start(), end() will be back soon, not sure for block()
* faster cwise product
This commit is contained in:
Gael Guennebaud
2009-01-14 14:24:10 +00:00
parent ee87f5ee49
commit c4c70669d1
31 changed files with 1920 additions and 200 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
Eigen/src/Sparse/TriangularSolver.h
View File

@@ -144,4 +144,35 @@ struct ei_solve_triangular_selector<Lhs,Rhs,UpperTriangular,ColMajor|IsSparse>
}
};
template<typename Derived>
template<typename OtherDerived>
void SparseMatrixBase<Derived>::solveTriangularInPlace(MatrixBase<OtherDerived>& other) const
{
ei_assert(derived().cols() == derived().rows());
ei_assert(derived().cols() == other.rows());
ei_assert(!(Flags & ZeroDiagBit));
ei_assert(Flags & (UpperTriangularBit|LowerTriangularBit));
enum { copy = ei_traits<OtherDerived>::Flags & RowMajorBit };
typedef typename ei_meta_if<copy,
typename ei_plain_matrix_type_column_major<OtherDerived>::type, OtherDerived&>::ret OtherCopy;
OtherCopy otherCopy(other.derived());
ei_solve_triangular_selector<Derived, typename ei_unref<OtherCopy>::type>::run(derived(), otherCopy);
if (copy)
other = otherCopy;
}
template<typename Derived>
template<typename OtherDerived>
typename ei_plain_matrix_type_column_major<OtherDerived>::type
SparseMatrixBase<Derived>::solveTriangular(const MatrixBase<OtherDerived>& other) const
{
typename ei_plain_matrix_type_column_major<OtherDerived>::type res(other);
solveTriangularInPlace(res);
return res;
}
#endif // EIGEN_SPARSETRIANGULARSOLVER_H