From: Matthias Maier <tamiko@43-1.org>
Date: Mon, 7 Sep 2015 02:02:51 +0000 (-0500)
Subject: Bugfix: Avoid temporaries
X-Git-Tag: v8.4.0-rc2~466^2~12
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd9af3a4d22bbc304798421b1ccaa98655185953;p=dealii.git

Bugfix: Avoid temporaries
---

diff --git a/include/deal.II/base/tensor.h b/include/deal.II/base/tensor.h
index a2a3ba0f8a..d386528603 100644
--- a/include/deal.II/base/tensor.h
+++ b/include/deal.II/base/tensor.h
@@ -140,7 +140,7 @@ inline
 Tensor<0, dim, typename ProductType<Number, OtherNumber>::type>
 operator+ (const Tensor<0,dim,Number> &p, const Tensor<0,dim,OtherNumber> &q)
 {
-  return static_cast<Number>(p) + static_cast<OtherNumber>(q);
+  return static_cast<const Number &>(p) + static_cast<const OtherNumber &>(q);
 }
 
 
@@ -154,7 +154,7 @@ inline
 Tensor<0, dim, typename ProductType<Number, OtherNumber>::type>
 operator- (const Tensor<0,dim,Number> &p, const Tensor<0,dim,OtherNumber> &q)
 {
-  return static_cast<Number>(p) - static_cast<OtherNumber>(q);
+  return static_cast<const Number &>(p) - static_cast<const OtherNumber &>(q);
 }
 
 
@@ -174,7 +174,7 @@ inline
 typename ProductType<Number, OtherNumber>::type
 operator* (const Tensor<0,dim,Number> &p, const Tensor<0,dim,OtherNumber> &q)
 {
-  return static_cast<Number>(p) * static_cast<OtherNumber>(q);
+  return static_cast<const Number &>(p) * static_cast<const OtherNumber &>(q);
 }
 
 //@}