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-rw-r--r--modules/core/c++/hlbm.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/core/c++/hlbm.hpp b/modules/core/c++/hlbm.hpp
index d57a2e7..9a89697 100644
--- a/modules/core/c++/hlbm.hpp
+++ b/modules/core/c++/hlbm.hpp
@@ -174,7 +174,7 @@ public:
uint64_t i_opp = dfi::opposite_index[i];
- saw::data<T> dfs_added = dfs.at({i}) + dfs_old_f.at(n_ind_i).at({i_opp});
+ saw::data<T> dfs_added = dfs.at({i}) - dfs_old_f.at(n_ind_i).at({i_opp});
saw::data<sch::Scalar<T>> dfs_added_v;
dfs_added_v.at({}) = dfs_added;
auto ei_dfs = e_i * dfs_added_v;