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-rw-r--r--Eigen/src/Core/util/XprHelper.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h
index a08538aff..1b3e122e1 100644
--- a/Eigen/src/Core/util/XprHelper.h
+++ b/Eigen/src/Core/util/XprHelper.h
@@ -101,6 +101,7 @@ template<typename T> struct packet_traits;
template<typename T> struct unpacket_traits
{
typedef T type;
+ typedef T half;
enum {size=1};
};