GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-07-04 20:25:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

rm local fill-in ratio estimation (was broken sometimes)

Browse Source
This commit is contained in:
Gael Guennebaud 2011-12-16 16:29:46 +01:00
parent 732a50d043
commit 33e52a3943
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Eigen/src/SparseCore/SparseSparseProductWithPruning.h
View File

@ -61,10 +61,12 @@ static void sparse_sparse_product_with_pruning_impl(const Lhs& lhs, const Rhs& r
res.resize(rows, cols);
res.reserve(estimated_nnz_prod);
double ratioColRes = double(estimated_nnz_prod)/double(lhs.rows()*rhs.cols());
for (Index j=0; j<cols; ++j)
{
// FIXME:
//double ratioColRes = (double(rhs.innerVector(j).nonZeros()) + double(lhs.nonZeros())/double(lhs.cols()))/double(lhs.rows());
// let's do a more accurate determination of the nnz ratio for the current column j of res
double ratioColRes = (double(rhs.col(j).nonZeros()) + double(lhs.nonZeros())/double(lhs.cols()))/double(lhs.rows());
tempVector.init(ratioColRes);
tempVector.setZero();
for (typename Rhs::InnerIterator rhsIt(rhs, j); rhsIt; ++rhsIt)