9 Commits

Author SHA1 Message Date
Gael Guennebaud
96e1e582ff Sparse module:
* add a MappedSparseMatrix class (like Eigen::Map but for sparse
  matrices)
* rename SparseArray to CompressedStorage
2009-01-15 12:52:59 +00:00
Gael Guennebaud
0b606dcccd Add support for sparse * dense and dense * sparse matrix/vector products 2009-01-14 17:41:55 +00:00
Gael Guennebaud
c4c70669d1 Big rewrite in the Sparse module: SparseMatrixBase no longer inherits MatrixBase.
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
2009-01-14 14:24:10 +00:00
Gael Guennebaud
fd7eba3394 Added a SparseVector class (not tested yet) 2009-01-02 08:47:09 +00:00
Gael Guennebaud
ecc6c43dba sparse module: add preliminary support for direct sparse LU solver
using SuperLU. Calling SuperLU was very painful, but it was worth it,
it seems to be damn fast !
2008-10-19 15:26:28 +00:00
Gael Guennebaud
6be0131774 sparse module: added some documentation for the LLT solver 2008-10-18 18:33:56 +00:00
Gael Guennebaud
d8df318d77 resurrected sparse triangular solver 2008-09-02 19:55:26 +00:00
Gael Guennebaud
027818d739 * added innerSize / outerSize functions to MatrixBase
* added complete implementation of sparse matrix product
  (with a little glue in Eigen/Core)
* added an exhaustive bench of sparse products including GMM++ and MTL4
  => Eigen outperforms in all transposed/density configurations !
2008-06-28 23:07:14 +00:00
Gael Guennebaud
e5d301dc96 various work on the Sparse module:
* added some glue to Eigen/Core (SparseBit, ei_eval, Matrix)
* add two new sparse matrix types:
   HashMatrix: based on std::map (for random writes)
   LinkedVectorMatrix: array of linked vectors
   (for outer coherent writes, e.g. to transpose a matrix)
* add a SparseSetter class to easily set/update any kind of matrices, e.g.:
   { SparseSetter<MatrixType,RandomAccessPattern> wrapper(mymatrix);
     for (...) wrapper->coeffRef(rand(),rand()) = rand(); }
* automatic shallow copy for RValue
* and a lot of mess !
plus:
* remove the remaining ArrayBit related stuff
* don't use alloca in product for very large memory allocation
2008-06-26 23:22:26 +00:00