From 686f68ef7dc4e33d910780252cd1032ebcfc25ac Mon Sep 17 00:00:00 2001
From: Richard Kreckel <Richard.Kreckel@uni-mainz.de>
Date: Thu, 28 Jun 2001 19:22:24 +0000
Subject: [PATCH] - symmetrize eta(x,y).

---
 ginac/inifcns.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ginac/inifcns.cpp b/ginac/inifcns.cpp
index 316eea6c..c18f4c63 100644
--- a/ginac/inifcns.cpp
+++ b/ginac/inifcns.cpp
@@ -33,6 +33,7 @@
 #include "relational.h"
 #include "pseries.h"
 #include "symbol.h"
+#include "symmetry.h"
 #include "utils.h"
 
 namespace GiNaC {
@@ -198,7 +199,8 @@ static ex eta_series(const ex & x, const ex & y,
 REGISTER_FUNCTION(eta, eval_func(eta_eval).
                        evalf_func(eta_evalf).
 				       series_func(eta_series).
-                       latex_name("\\eta"));
+                       latex_name("\\eta").
+                       set_symmetry(sy_symm(0, 1)));
 
 
 //////////
-- 
2.49.0