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fix overflow in sparse product

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This commit is contained in:
Gael Guennebaud 2009-01-28 18:21:38 +00:00
parent 9bc44094c5
commit 9b594ab0fb
1 changed files with 3 additions and 3 deletions
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Eigen/src/Sparse/SparseProduct.h
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@ -182,7 +182,7 @@ struct ei_sparse_product_selector<Lhs,Rhs,ResultType,ColMajor,ColMajor,ColMajor>
AmbiVector<Scalar> tempVector(rows);
// estimate the number of non zero entries
float ratioLhs = float(lhs.nonZeros())/float(lhs.rows()*lhs.cols());
float ratioLhs = float(lhs.nonZeros())/(float(lhs.rows())*float(lhs.cols()));
float avgNnzPerRhsColumn = float(rhs.nonZeros())/float(cols);
float ratioRes = std::min(ratioLhs * avgNnzPerRhsColumn, 1.f);