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

1 files changed, 3 insertions, 1 deletions

diff --git a/Eigen/src/Core/util/Meta.h b/Eigen/src/Core/util/Meta.h
index 5d809f619..93d50441e 100644
--- a/Eigen/src/Core/util/Meta.h
+++ b/Eigen/src/Core/util/Meta.h
@@ -175,7 +175,9 @@ template<int _Rows, int _Cols> struct ei_size_at_compile_time
   enum { ret = (_Rows==Dynamic || _Cols==Dynamic) ? Dynamic : _Rows * _Cols };
 };
 
-template<typename T> class ei_eval
+template<typename T, int Sparseness = ei_traits<T>::Flags&SparseBit> class ei_eval;
+
+template<typename T> class ei_eval<T,Dense>
 {
     typedef typename ei_traits<T>::Scalar _Scalar;
     enum {_Rows = ei_traits<T>::RowsAtCompileTime,