From 742c72895d610550b021a1427a17437260f30d55 Mon Sep 17 00:00:00 2001
From: Richard Kreckel <Richard.Kreckel@uni-mainz.de>
Date: Tue, 18 Dec 2001 19:03:48 +0000
Subject: [PATCH] * Added some long-pending docu.

---
 check/time_antipode.cpp | 2 +-
 ginac/ex.h              | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/check/time_antipode.cpp b/check/time_antipode.cpp
index 43d4da49..f1bba8b1 100644
--- a/check/time_antipode.cpp
+++ b/check/time_antipode.cpp
@@ -12,7 +12,7 @@
  *  This program is based on work by
  *      Isabella Bierenbaum <bierenbaum@thep.physik.uni-mainz.de> and
  *      Dirk Kreimer <dkreimer@bu.edu>.
- *  For details, please ask for the diploma theses of Isabella Bierenbaum.
+ *  For details, please see <http://www.arXiv.org/abs/hep-th/0111192>.
  */
 
 /*
diff --git a/ginac/ex.h b/ginac/ex.h
index 0bbe1299..e819d13f 100644
--- a/ginac/ex.h
+++ b/ginac/ex.h
@@ -344,6 +344,11 @@ bool ex::is_equal(const ex & other) const
 
 
 // utility functions
+
+/** Compare two objects of class quickly without doing a deep tree traversal.
+ *  @return "true" if they are equal
+ *          "false" if equality cannot be established quickly (e1 and e2 may
+ *          still be equal, in this case. */
 inline bool are_ex_trivially_equal(const ex &e1, const ex &e2)
 {
 	return e1.bp == e2.bp;
-- 
2.44.0