- Derivatives are now assembled in a slightly different manner (i.e. they

[ginac.git] / ginac / operators.cpp

diff --git a/ginac/operators.cpp b/ginac/operators.cpp
index f901760e72e3eb0421f6a4d076aed1d3e04ba8de..f0d2eb8da57bb18ddec0d30dbd73705c82019ae6 100644 (file)
--- a/ginac/operators.cpp
+++ b/ginac/operators.cpp
@@ -257,13 +257,13 @@ relational operator>=(const ex & lh, const ex & rh)
 
 // input/output stream operators
 
-ostream & operator<<(ostream & os, const ex & e)
+std::ostream & operator<<(std::ostream & os, const ex & e)
 {
     e.print(os);
     return os;
 }
 
-istream & operator>>(istream & is, ex & e)
+std::istream & operator>>(std::istream & is, ex & e)
 {
     throw (std::logic_error("expression input from streams not implemented"));
 }