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-rw-r--r--Eigen/src/Core/util/XprHelper.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h
index b94dd61ff..d5e565cb8 100644
--- a/Eigen/src/Core/util/XprHelper.h
+++ b/Eigen/src/Core/util/XprHelper.h
@@ -638,7 +638,7 @@ struct plain_constant_type
template<typename ExpressionType>
struct is_lvalue
{
- enum { value = !bool(is_const<ExpressionType>::value) &&
+ enum { value = (!bool(is_const<ExpressionType>::value)) &&
bool(traits<ExpressionType>::Flags & LvalueBit) };
};