From 51df0cefd5dfb4a39d0b39e020711bb7e6cae896 Mon Sep 17 00:00:00 2001
From: Nikos Karastathis <n.karastathis@kit.edu>
Date: Fri, 12 Mar 2021 15:48:58 +0100
Subject: [PATCH] fixed -=, +=, *=, /= operators in QuantityVector.hpp and .inl
 (please check if this modification is really needed)

---
 corsika/detail/framework/geometry/QuantityVector.inl | 8 ++++----
 corsika/framework/geometry/QuantityVector.hpp        | 6 +++---
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/corsika/detail/framework/geometry/QuantityVector.inl b/corsika/detail/framework/geometry/QuantityVector.inl
index c7f9457b9..7af47d7e1 100644
--- a/corsika/detail/framework/geometry/QuantityVector.inl
+++ b/corsika/detail/framework/geometry/QuantityVector.inl
@@ -102,26 +102,26 @@ namespace corsika {
   }
 
   template <typename TDimension>
-  inline auto& QuantityVector<TDimension>::operator/=(double const p) {
+  inline auto QuantityVector<TDimension>::operator/=(double const p) {
     eigenVector_ /= p;
     return *this;
   }
 
   template <typename TDimension>
-  inline auto& QuantityVector<TDimension>::operator*=(double const p) {
+  inline auto QuantityVector<TDimension>::operator*=(double const p) {
     eigenVector_ *= p;
     return *this;
   }
 
   template <typename TDimension>
-  inline auto& QuantityVector<TDimension>::operator+=(
+  inline auto QuantityVector<TDimension>::operator+=(
       QuantityVector<TDimension> const& pQVec) {
     eigenVector_ += pQVec.eigenVector_;
     return *this;
   }
 
   template <typename TDimension>
-  inline auto& QuantityVector<TDimension>::operator-=(
+  inline auto QuantityVector<TDimension>::operator-=(
       QuantityVector<TDimension> const& pQVec) {
     eigenVector_ -= pQVec.eigenVector_;
     return *this;
diff --git a/corsika/framework/geometry/QuantityVector.hpp b/corsika/framework/geometry/QuantityVector.hpp
index ac7afc51e..57d09c29e 100644
--- a/corsika/framework/geometry/QuantityVector.hpp
+++ b/corsika/framework/geometry/QuantityVector.hpp
@@ -81,11 +81,11 @@ namespace corsika {
 
     auto operator/(double const p) const;
 
-    auto& operator/=(double const p);
+    auto operator/=(double const p);
 
-    auto& operator*=(double const p);
+    auto operator*=(double const p);
 
-    auto& operator+=(QuantityVector<TDimension> const& pQVec);
+    auto operator+=(QuantityVector<TDimension> const& pQVec);
 
     auto& operator-=(QuantityVector<TDimension> const& pQVec);
 
-- 
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