Support for exset and printing thereof.

[ginac.git] / ginac / ex.h

diff --git a/ginac/ex.h b/ginac/ex.h
index 574e6800774b4b0304f556ffe5ea03426951f890..3070b7ada020d68c917907b77434315b8992c12e 100644 (file)
--- a/ginac/ex.h
+++ b/ginac/ex.h
@@ -687,6 +687,7 @@ struct ex_swap : public std::binary_function<ex, ex, void> {
 
 // Make it possible to print exvectors and exmaps
 std::ostream & operator<<(std::ostream & os, const exvector & e);
+std::ostream & operator<<(std::ostream & os, const exset & e);
 std::ostream & operator<<(std::ostream & os, const exmap & e);
 
 // wrapper functions around member functions