From cdfd266cab08b866624123cca7c5b203026854cd Mon Sep 17 00:00:00 2001
From: Hans-Christian Ebke <ebke@cs.rwth-aachen.de>
Date: Thu, 19 Nov 2015 17:32:11 +0100
Subject: [PATCH] C++11: Using std::inner_product for VectorT::operator|.

---
 src/OpenMesh/Core/Geometry/Vector11T.hh | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/src/OpenMesh/Core/Geometry/Vector11T.hh b/src/OpenMesh/Core/Geometry/Vector11T.hh
index 4d8792aa..fe0b92b2 100644
--- a/src/OpenMesh/Core/Geometry/Vector11T.hh
+++ b/src/OpenMesh/Core/Geometry/Vector11T.hh
@@ -376,13 +376,10 @@ class VectorT {
         /// \see OpenMesh::dot
         template<typename OtherScalar>
         auto operator|(const VectorT<OtherScalar, DIM>& _rhs) const ->
-            decltype(this->values_[0] * _rhs[0]) {
+            decltype(*data() * *_rhs.data()) {
 
-            auto p = values_[0] * _rhs[0];
-            for (int i = 1; i < DIM; ++i) {
-                p += values_[i] * _rhs[i];
-            }
-            return p;
+            return std::inner_product(data() + 1, data() + DIM, _rhs.data() + 1,
+                    *data() * *_rhs.data());
         }
 
         //------------------------------------------------------------ euclidean norm